{"product_id":"jardin-de-cristaux-magique-en-fiole-experience-de-chimie-germina","title":"Magical crystal garden in a vial, chemistry experiment — GERMINA","description":"\u003cstyle\u003e\n.aa{font-family:Georgia,'Times New Roman',serif;color:#1A1A1A;line-height:1.7;font-size:15px;max-width:760px;margin:0 auto}\n.aa p{margin:0 0 1rem}\n.aa a{color:#185FA5;text-decoration:underline}\n.aa .aa-title{display:inline-block;border-bottom:2px solid #FAC775;padding-bottom:4px;font-size:16px;font-weight:600;margin:1.75rem 0 .5rem;letter-spacing:.3px;color:#1A1A1A}\n.aa .aa-badge{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;padding:3px 10px;border-radius:20px;margin:0 4px 4px 0;vertical-align:middle;font-family:Georgia,serif}\n.aa .aa-badge-or{background:#FAC775;color:#1A1A1A}\n.aa .aa-badge-brun{background:#5C3A1E;color:#FFF9E8}\n.aa .aa-badge-noir{background:#1A1A1A;color:#FAC775}\n.aa .aa-badge-bleu{background:#185FA5;color:#fff}\n.aa 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summary::after{content:\"\\2212\"}\n.aa .aa-a{font-size:13px;color:#3a3a3a;margin-top:.5rem}\n.aa .aa-a p{margin:0 0 .5rem}\n@media(max-width:600px){.aa .aa-vars,.aa .aa-ben{grid-template-columns:1fr}}\n.aa-links{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:1rem 0}\n.aa-links a.aa-link{display:block;background:#fff;border:1px solid #ebe5d6;border-left:3px solid #FAC775;border-radius:6px;padding:.8rem 1rem;text-decoration:none;color:#1A1A1A}\n.aa-link .lt{display:block;font-weight:700;font-size:14px}.aa-link .ld{display:block;font-size:12px;color:#555}\n@media(max-width:600px){.aa-links{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\u003cdiv class=\"aa\"\u003e\n\n\n\u003cp\u003e\u003cspan class=\"aa-badge aa-badge-bleu\"\u003eChemistry experiment\u003c\/span\u003e \u003cspan class=\"aa-badge aa-badge-noir\"\u003eComplete kit\u003c\/span\u003e Pour, mix, sow, then watch the chemistry take shape. The \u003cstrong\u003eGERMINA magic crystal garden\u003c\/strong\u003e transforms a simple \u003cstrong\u003etransparent flask\u003c\/strong\u003e into a small living laboratory: within a few hours, \u003cstrong\u003ecolored filaments\u003c\/strong\u003e rise from the bottom to draw a mineral forest suspended in the liquid. The principle is that of a \u003cstrong\u003echemical garden\u003c\/strong\u003e, a chemistry experiment known for centuries, which relies on a \u003cstrong\u003esodium silicate solution\u003c\/strong\u003e and \u003cstrong\u003ecolored growth stones\u003c\/strong\u003e. Each kit contains everything needed to perform it at home: the flask with its \u003cstrong\u003ecork stopper\u003c\/strong\u003e, a \u003cstrong\u003egraduated measuring cup\u003c\/strong\u003e, a funnel, a spatula-spoon, a sachet of growth solution, and a sachet of stones. Three versions are available: the \u003cstrong\u003econical flask\u003c\/strong\u003e, the \u003cstrong\u003eround flask\u003c\/strong\u003e, or the Duo, which combines both shapes and two complete kits to compare results or conduct the experiment together. A crystal creation that is easy to do at home, sparking the scientific curiosity of children—under adult supervision—as well as adults.\u003c\/p\u003e\n\n\n\u003cdiv class=\"aa-vars\"\u003e\n\n  \u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v light\" style=\"background:#F5F0E8\"\u003eCONICAL FLASK\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eConical flask\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eThe flared silhouette of a chemistry lab, delivered with its complete kit\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n  \u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v light\" style=\"background:#F5F0E8\"\u003eROUND FLASK\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eRound flask\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eA rounded shape like a laboratory balloon, delivered with its complete kit\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n  \u003cdiv class=\"aa-var\"\u003e\n\n\u003cdiv class=\"aa-var-v light\" style=\"background:linear-gradient(135deg,#F5F0E8 0%,#E8F4FA 100%)\"\u003eDUO\u003c\/div\u003e\n\n\u003cdiv class=\"aa-var-i\"\u003e\n\n\u003cspan class=\"aa-var-n\"\u003eConical + round duo\u003c\/span\u003e\u003cspan class=\"aa-var-d\"\u003eBoth flasks and two complete kits, for two gardens side by side\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003ch3 class=\"aa-title\"\u003eKit highlights\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-ben\"\u003e\n\n  \u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e✦\u003c\/span\u003e\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eResults in a few hours\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe first filaments appear quickly, and the garden takes shape over the hours before the observer's eyes.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n  \u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e◆\u003c\/span\u003e\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eAll equipment provided\u003c\/span\u003e\u003cspan class=\"ds\"\u003eFlask, cork, measuring cup, funnel, spatula-spoon, and both sachets: simply add warm water.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n  \u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e➤\u003c\/span\u003e\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eLaboratory techniques\u003c\/span\u003e\u003cspan class=\"ds\"\u003eMeasuring to the line, mixing, pouring through the funnel: real chemistry procedures, simple and guided.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n  \u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e★\u003c\/span\u003e\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eTwo flask shapes\u003c\/span\u003e\u003cspan class=\"ds\"\u003eConical or round, each silhouette gives the garden a different look once growth begins.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n  \u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e❄\u003c\/span\u003e\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eA sealed flask\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe cork stopper seals the flask, allowing you to admire the garden through the transparent wall.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n  \u003cdiv class=\"aa-b\"\u003e\n\n\u003cspan class=\"ic\"\u003e❖\u003c\/span\u003e\u003cdiv\u003e\n\n\u003cspan class=\"tt\"\u003eTo experience together\u003c\/span\u003e\u003cspan class=\"ds\"\u003eThe Duo version allows two budding chemists to each conduct their own experiment and compare their gardens.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003ch3 class=\"aa-title\"\u003eSodium silicate\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-mat\"\u003e\n\n\u003ch3\u003eSodium silicate: the chemists' \"water glass\"\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eSodium silicate\u003c\/strong\u003e is a compound of silica and sodium that has long been nicknamed \"water glass\": dissolved in water, it forms a clear, slightly viscous solution. It is what makes up the \u003cstrong\u003egrowth solution\u003c\/strong\u003e in the GERMINA kit. The chemical garden is an experiment described as early as the 17th century by European alchemists and chemists, who were already marveling at seeing plant-like forms emerge from a mineral mixture.\u003c\/p\u003e\n\n\u003cp\u003eThe phenomenon is not crystal growth in the strict sense: upon contact with the solution, each growth stone becomes surrounded by a thin \u003cstrong\u003emineral membrane\u003c\/strong\u003e. Water crosses this wall via \u003cstrong\u003eosmosis\u003c\/strong\u003e, pressure builds up, the membrane gives way upwards, and a new portion of tube is immediately formed. This cycle repeats, drawing the colored filaments that rise within the flask.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003ch3 class=\"aa-title\"\u003eA cabinet curiosity\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-des\"\u003e\n\n\u003cp class=\"t\"\u003eChemistry that mimics life\u003c\/p\u003e\n\n\u003cdiv class=\"x\"\u003e\n\n\u003cp\u003eIn the cabinets of curiosities of old, nothing was more fascinating than an object capable of blurring the line between the mineral and the living. The \u003cstrong\u003echemical garden\u003c\/strong\u003e belongs to this family: stems that rise, branch out, and become colored, like algae or coral, even though no seeds were sown.\u003c\/p\u003e\n\n\u003cp\u003eGERMINA revives this tradition with the sobriety of \u003cstrong\u003elaboratory glassware\u003c\/strong\u003e. The transparent flask serves as a display case, the cork stopper recalls the vials of ancient workbenches, and the spectacle unfolds slowly, at its own pace, without screens or batteries.\u003c\/p\u003e\n\n\u003cp\u003eYou prepare the solution, you sow the stones, then you return periodically to observe the garden: it is this \u003cstrong\u003erewarded patience\u003c\/strong\u003e that makes the experiment so charming.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003ch3 class=\"aa-title\"\u003eSuccessfully growing your crystal garden\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-steps\"\u003e\n\n\u003ch4\u003eThe experiment in four steps\u003c\/h4\u003e\n\n  \u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e1\u003c\/span\u003e\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003ePrepare:\u003c\/strong\u003e pour the sachet of growth solution into the measuring cup, then add warm water (never hot) up to the 100 ml line.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n  \u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e2\u003c\/span\u003e\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eMix:\u003c\/strong\u003e stir carefully with the spatula-spoon until the solution is homogeneous, without rushing the process.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n  \u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e3\u003c\/span\u003e\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eTransfer:\u003c\/strong\u003e place the funnel on the neck of the flask and slowly pour the solution into it, with the flask placed on a stable surface.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n  \u003cdiv class=\"aa-step\"\u003e\n\n\u003cspan class=\"aa-step-n\"\u003e4\u003c\/span\u003e\u003cdiv class=\"aa-step-c\"\u003e\n\n\u003cstrong\u003eSow and observe:\u003c\/strong\u003e add the colored growth stones, re-cork the flask, and let the filaments grow over a few hours.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003ch3 class=\"aa-title\"\u003eWhich version to choose?\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-cmp\"\u003e\u003ctable\u003e\n\n\u003cthead\u003e\u003ctr\u003e\n\n\u003cth\u003eCriteria\u003c\/th\u003e\n\n\u003cth\u003eConical flask\u003c\/th\u003e\n\n\u003cth\u003eRound flask\u003c\/th\u003e\n\n\u003cth\u003eConical + round duo\u003c\/th\u003e\n\n\n\u003c\/tr\u003e\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eShape\u003c\/td\u003e\n\n\u003ctd\u003eWide base, narrow neck\u003c\/td\u003e\n\n\u003ctd\u003eRounded body, narrow neck\u003c\/td\u003e\n\n\u003ctd\u003eBoth shapes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eFlasks\u003c\/td\u003e\n\n\u003ctd\u003e1\u003c\/td\u003e\n\n\u003ctd\u003e1\u003c\/td\u003e\n\n\u003ctd\u003e2\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eComplete kits\u003c\/td\u003e\n\n\u003ctd\u003e1\u003c\/td\u003e\n\n\u003ctd\u003e1\u003c\/td\u003e\n\n\u003ctd\u003e2\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr class=\"hl\"\u003e\n\n\u003ctd\u003eExperiments\u003c\/td\u003e\n\n\u003ctd\u003eOne garden\u003c\/td\u003e\n\n\u003ctd\u003eOne garden\u003c\/td\u003e\n\n\u003ctd\u003eTwo gardens to compare\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eIdeal for\u003c\/td\u003e\n\n\u003ctd\u003eA first discovery\u003c\/td\u003e\n\n\u003ctd\u003eA softer silhouette\u003c\/td\u003e\n\n\u003ctd\u003eSiblings, parent-child duo\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\u003c\/div\u003e\n\n\n\u003ch3 class=\"aa-title\"\u003eGood to know\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-info\"\u003e\u003cp\u003e\u003cstrong\u003eContents of each kit:\u003c\/strong\u003e a transparent flask with its cork stopper, a graduated measuring cup, a funnel, a spatula-spoon, a sachet of colored growth stones, and a sachet of growth solution. The Duo version contains two complete kits, one with the conical flask and one with the round flask. Water is \u003cstrong\u003enot provided\u003c\/strong\u003e. The hues and shapes of the filaments vary from one experiment to the next: each garden is unique.\u003c\/p\u003e\u003c\/div\u003e\n\n\n\u003cdiv class=\"aa-tip\"\u003e\u003cp\u003e\u003cstrong\u003eWorkshop tip:\u003c\/strong\u003e use \u003cstrong\u003ewarm water\u003c\/strong\u003e rather than hot, and be sure to respect the 100 ml line on the cup. Place the flask in its permanent spot before sowing the stones: once growth has started, it is best not to move or shake it to keep the filaments perfectly straight. Place it in front of a window or lamp to enjoy the colors through transparency.\u003c\/p\u003e\u003c\/div\u003e\n\n\n\u003cdiv class=\"aa-warn\"\u003e\u003cp\u003e\u003cstrong\u003ePrecautions for use:\u003c\/strong\u003e \u003cstrong\u003esodium silicate\u003c\/strong\u003e is irritating to the eyes. Avoid any contact with the eyes, and in case of contact, rinse thoroughly with clean water. Do not ingest the solution or the growth stones. Wash your hands after handling. For children, the experiment must \u003cstrong\u003ealways be performed under adult supervision\u003c\/strong\u003e. Keep the kit, the prepared solution, and the flask out of reach of young children. Do not use the kit's utensils for food purposes.\u003c\/p\u003e\u003c\/div\u003e\n\n\n\u003ch3 class=\"aa-title\"\u003eSpecifications\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-sp\"\u003e\u003ctable\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eType\u003c\/td\u003e\n\n\u003ctd\u003eChemistry experiment kit, flask chemical garden\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003ePrinciple\u003c\/td\u003e\n\n\u003ctd\u003eGrowth of colored filaments in a sodium silicate solution\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eVersions\u003c\/td\u003e\n\n\u003ctd\u003e3: conical flask, round flask, conical + round Duo\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eItems per kit\u003c\/td\u003e\n\n\u003ctd\u003e6: flask with cork, measuring cup, funnel, spatula-spoon, 2 sachets\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eNumber of flasks\u003c\/td\u003e\n\n\u003ctd\u003e1 (conical or round) or 2 (Duo)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eFlask\u003c\/td\u003e\n\n\u003ctd\u003eTransparent plastic, cork stopper\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eDosage\u003c\/td\u003e\n\n\u003ctd\u003eWarm water up to the 100 ml line of the cup\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eGrowth time\u003c\/td\u003e\n\n\u003ctd\u003eA few hours\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eTo be provided\u003c\/td\u003e\n\n\u003ctd\u003eWarm water (not provided)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eUse\u003c\/td\u003e\n\n\u003ctd\u003eChildren under adult supervision, teenagers, curious adults\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003ePurpose\u003c\/td\u003e\n\n\u003ctd\u003eAt-home scientific experiment, scientific decorative object\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/table\u003e\u003c\/div\u003e\n\n\n\u003ch3 class=\"aa-title\"\u003eA scientific gift idea\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-gift\"\u003e\n\n\u003ch3\u003eGive the pleasure of discovery\u003c\/h3\u003e\n\n\u003cp\u003eFor a birthday or under the Christmas tree, GERMINA is one of those \u003cstrong\u003escientific gifts\u003c\/strong\u003e that you open with curiosity and want to try right away. The experiment is prepared in a few minutes, then the garden reveals itself over the hours: enough to extend the moment long after the package is opened.\u003c\/p\u003e\n\n\u003cp\u003eThe Duo version can be shared between siblings or between a parent and child, each with their own flask. To assemble a real lab corner, pair it with a test tube rack or a collectible mineral, also available in our \u003ca href=\"\/en\/collections\/idees-cadeaux-anniversaire\"\u003ebirthday gift ideas\u003c\/a\u003e.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"aa-links\"\u003e\n\n\u003ca class=\"aa-link\" href=\"\/en\/collections\/mineraux-et-chimie\"\u003e\u003cspan class=\"lt\"\u003eMinerals and chemistry\u003c\/span\u003e\u003cspan class=\"ld\"\u003eCrystals, stones, and experiments to explore matter\u003c\/span\u003e\u003c\/a\u003e\n\u003ca class=\"aa-link\" href=\"\/en\/products\/portoir-a-eprouvettes-en-bois-et-eprouvettes-en-verre-borosilicate-cornue\"\u003e\u003cspan class=\"lt\"\u003eCORNUE test tube rack\u003c\/span\u003e\u003cspan class=\"ld\"\u003eA laboratory setting in wood and borosilicate glass\u003c\/span\u003e\u003c\/a\u003e\n\u003ca class=\"aa-link\" href=\"\/en\/products\/cristal-de-bismuth-irise-en-escalier-piece-unique-bisma\"\u003e\u003cspan class=\"lt\"\u003eBISMA iridescent bismuth crystal\u003c\/span\u003e\u003cspan class=\"ld\"\u003eA unique piece with metallic stepped reflections\u003c\/span\u003e\u003c\/a\u003e\n\u003ca class=\"aa-link\" href=\"\/en\/collections\/objets-scientifiques\"\u003e\u003cspan class=\"lt\"\u003eScientific objects\u003c\/span\u003e\u003cspan class=\"ld\"\u003eThe whole lab universe for curious minds\u003c\/span\u003e\u003c\/a\u003e\n\n\u003c\/div\u003e\n\n\n\u003ch3 class=\"aa-title\"\u003eFrequently asked questions\u003c\/h3\u003e\n\n\u003cdiv class=\"aa-faq\"\u003e\n\n\u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eHow does a crystal garden work?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eThe crystal garden, or \u003cstrong\u003echemical garden\u003c\/strong\u003e, relies on the meeting of a \u003cstrong\u003esodium silicate solution\u003c\/strong\u003e and colored growth stones. When a stone touches the solution, it becomes surrounded by a thin mineral membrane. Water crosses this wall by \u003cstrong\u003eosmosis\u003c\/strong\u003e, pressure increases inside, the membrane ruptures upwards, and a new portion of tube is formed. This cycle repeats and gives birth to the \u003cstrong\u003ecolored filaments\u003c\/strong\u003e that rise in the flask. Despite its name, these are not exactly crystals in the mineralogical sense, but fine mineral tubes: this is precisely what makes the experiment so amazing to observe.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eHow long do the crystals take to grow?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eThe filaments start to form shortly after adding the growth stones, and the garden develops over \u003cstrong\u003ea few hours\u003c\/strong\u003e. The speed and height reached vary depending on the water temperature, the distribution of stones at the bottom of the flask, and how the solution was prepared. For a consistent result, use \u003cstrong\u003ewarm water\u003c\/strong\u003e, never hot, respect the 100 ml line on the measuring cup, and stir carefully before transferring. Once the stones are sown, leave the flask \u003cstrong\u003estill\u003c\/strong\u003e: moving or shaking it during growth can break the finest filaments. Returning to observe it from time to time is part of the pleasure.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eWhat is the difference between the conical flask, the round flask, and the Duo?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eThe three versions offer the same experiment and the same \u003cstrong\u003ecomplete kit\u003c\/strong\u003e: graduated measuring cup, funnel, spatula-spoon, sachet of growth solution, and sachet of colored stones. Only the flask shape changes. The \u003cstrong\u003econical flask\u003c\/strong\u003e features the flared silhouette of laboratory bottles, with a wide base and narrow neck. The \u003cstrong\u003eround flask\u003c\/strong\u003e adopts a rounded body reminiscent of a chemistry balloon. The \u003cstrong\u003econical + round Duo\u003c\/strong\u003e combines both flasks and two complete kits: ideal for conducting two experiments in parallel, comparing the resulting gardens, or sharing the activity between two people, such as siblings or a parent and child.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eIs this scientific experiment suitable for a child?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eYes, provided it is carried out \u003cstrong\u003eunder the supervision of an adult\u003c\/strong\u003e. The steps are simple and very visual: measuring, mixing, pouring with the funnel, and then sowing the stones. It is a great way to discover \u003cstrong\u003elaboratory procedures\u003c\/strong\u003e and address concepts like osmosis or chemical reactions. The sodium silicate solution is, however, irritating to the eyes and must not be ingested: the adult prepares the workspace, ensures the child does not put anything in their mouth, and makes them wash their hands at the end. The kit, the solution, and the flask must remain \u003cstrong\u003eout of reach of young children\u003c\/strong\u003e. Curious adults will also find it interesting.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eWhat precautions should be taken with sodium silicate?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003e\n\u003cstrong\u003eSodium silicate\u003c\/strong\u003e is irritating to the eyes: avoid rubbing your face during the experiment and, in case of contact, rinse thoroughly with clean water. The solution and the growth stones \u003cstrong\u003emust not be ingested\u003c\/strong\u003e. Work on a stable surface that is easy to clean, keep food and drinks away, and do not use the cup, funnel, or spatula-spoon for food purposes. After handling, \u003cstrong\u003ewash your hands\u003c\/strong\u003e. For children, the presence of an adult is essential from start to finish. Finally, store the kit and the completed flask out of reach of young children.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eWhat exactly is included in the kit?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eEach GERMINA kit includes a \u003cstrong\u003etransparent flask\u003c\/strong\u003e with its \u003cstrong\u003ecork stopper\u003c\/strong\u003e, a graduated measuring cup, a funnel, a spatula-spoon, a sachet of \u003cstrong\u003ecolored growth stones\u003c\/strong\u003e, and a sachet of \u003cstrong\u003egrowth solution\u003c\/strong\u003e. The Conical Flask and Round Flask versions contain one kit each; the Conical + Round Duo contains two, one per flask. Only warm water remains to be provided. The flask is made of transparent plastic, which allows you to observe the garden from all angles, and the cork closes the flask once the stones are sown.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"aa-q\"\u003e\u003csummary\u003eIs it a good scientific gift idea?\u003c\/summary\u003e\u003cdiv class=\"aa-a\"\u003eGERMINA appeals to curious children and adults who love \u003cstrong\u003escientific objects\u003c\/strong\u003e alike. It offers both an activity to share, which can be prepared in minutes, and a result to contemplate, which reveals itself over the hours. It is an original gift for a \u003cstrong\u003ebirthday\u003c\/strong\u003e, \u003cstrong\u003eChristmas\u003c\/strong\u003e, or to reward good grades, and the Duo version is particularly well-suited for siblings or a parent-child moment. For a more complete gift, pair it with a test tube rack or a collectible mineral from our Minerals and Chemistry section, and create a real laboratory corner at home.\u003c\/div\u003e\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\n\n\u003c\/div\u003e\n","brand":"Atelier Atypique","offers":[{"title":"Conical flask","offer_id":54905645564227,"sku":"AA-GERMINA-FIOLE-CONIQUE","price":19.9,"currency_code":"EUR","in_stock":true},{"title":"Round flask","offer_id":54905645596995,"sku":"AA-GERMINA-FIOLE-RONDE","price":19.9,"currency_code":"EUR","in_stock":true},{"title":"Conical + round pair","offer_id":54905645629763,"sku":"AA-GERMINA-DUO-CONIQUE-RONDE","price":29.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0231\/3365\/0991\/files\/S9e515382945d4945ac34d6fa9c588941W.webp?v=1791966012","url":"https:\/\/atelier-atypique.fr\/en\/products\/jardin-de-cristaux-magique-en-fiole-experience-de-chimie-germina","provider":"Atelier Atypique","version":"1.0","type":"link"}