Silicone Gem Mold
Silicone Gem Mold
Silicone Gem Mold – Crystals, Pendants & Cosplay Accessories
Want to create resin pendants, stylized crystals, shiny mini gems for DIY jewelry or custom cosplay pieces?
This silicone gem mold is the perfect tool to transform your resin into 3D crystal-like gems with sharp, elegant shapes.
The soft silicone makes unmolding incredibly easy, even with sharp angles and fine details.
It works with UV resin and epoxy resin, allowing you to experiment with transparency effects, gradients, holographic glitter and even inclusions (flowers, pigments, micro-elements…).
This resin gem mold is ideal for making:
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gem pendants
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unique DIY jewelry
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crystals for props
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fantasy decorations
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kawaii mini charms
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cosplay elements inspired by RPGs, magical girl series or medieval-fantasy universes
Add color, glitter pigment, galaxy effects… and you’ll get a gem worthy of a legendary artifact ✨.
Key Features
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Sharp, precise gem shapes
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Compatible with UV & epoxy resin
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Soft silicone → super easy unmolding
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Perfect for jewelry, pendants, charms, cosplay props
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Smooth, glossy finish straight out of the mold
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Ideal for crystal, galaxy, chroma, arcane effects
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Durable & reusable
Dimensions
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Gem sizes: 10 to 25 mm
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Mold size: 8.5 × 7.5 cm
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Depth: 3 to 5 mm
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Silicone thickness: 3 mm
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Cavities: multiple 3D gem shapes
Technical Specifications
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Material: soft silicone
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Compatible with: UV resin, epoxy resin, polyurethane
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Also suitable for: FIMO, polymer clay, self-hardening clay
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Heat resistance: –40°C to +210°C
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Finish: smooth, glossy, crystal-clear
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Safety: non-toxic, BPA-free, non-food
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Durability: 200+ castings
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Cleaning: warm water + soap
💡 Usage Ideas
This silicone gem mold is perfect for making:
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resin gem pendants
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unique DIY jewelry
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crystals for props
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fantasy decorations
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kawaii mini charms
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cosplay elements inspired by RPGs, magical girl aesthetics and medieval fantasy
FAQ
Does this gem mold work with UV resin and epoxy resin?
Yes!
UV resin is great for small gems, while epoxy gives deeper crystal clarity.
How do I avoid bubbles in resin gems?
Pour slowly, use a toothpick, tap the mold, let epoxy rest and slightly warm UV resin.
Do gems come out shiny right away?
Yes — the silicone gem mold produces a glossy surface automatically.
For a mirror effect: add UV top coat or lightly polish.
Can I add inclusions (flowers, glitter, micro-elements)?
Absolutely — this mold is perfect for that.
How do I get a transparent crystal effect?
Use clear jewelry epoxy resin, respect the mix ratio, avoid dust and finish with UV light for small pieces.
Ready to forge your own magical gems?
Add the Silicone Gem Mold to your cart and start crafting unique crystals!
Share your creations with #CosplaySmart ✨
How is my order prepared?
Your order will be prepared within 48 hours (i.e., 2 business days).
When will I receive my order and by what delivery methods?
Currently we offer home delivery via La Poste and delivery to a collection point via Mondial Relay. But we will diversify our carriers quickly.
For France:
The delivery time is set between 3 and 5 business days. This means that an order should take a maximum of 7 business days to be delivered.
For neighboring countries:
The delivery time is set between 5 and 10 working days. This means that an order should take a maximum of 12 working days to be delivered.
What are your delivery rates?
We've chosen variable shipping rates that are based as closely as possible on the actual weight of your order. For more information, see our shipping conditions on the following page: Shipping and Returns
Can I pick up my order in person?
This option is not currently available .
However, it will sometimes be possible to request a local pickup during a convention.
I received my order but there's a problem:
Is your package damaged upon arrival? Take a photo or video of the unpacking . If an item is defective.
In any case, contact us afterwards so we can assist you.
You can reach us on our social media channels or via the following email address: contact@cosplaysmart.com
I would like to return one or more items:
You have up to 30 days after your order to return your item, provided it is unused and unopened. However, you will be responsible for the return shipping costs.
Contact us on our social media channels or via email at contact@cosplaysmart.com . We'll explain how to return the product(s). Remember to keep the original packaging you received your order in for return shipping.
Let customers speak for us
Super pour fixer les mèches de wig sur la peau et autres petits accessoires
Lentille entièrement couvrante super confortable .
On se les ai partagés avec mon chéri et on les a gardé toute la journée.
Effet garanti .
On a mixé œil blanc et colodium c’était top du top
Conforme à l'image de référence
Le site cosplay smart et super j'ai reçu le flexi paint transparent très bon livreur 👍😊
J’adore cette boutique, les produits sont vraiment super !
bonjour, j'ai commande une paire de lentilles pour completer mon cosplay de douma de demon slayer et je suis tres contente produit reçu dans les temps et elles sont tres confortables et la vision est parfaite meme si l'iris a une vision un peu reduite merci beaucoup :)
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C'est arrivé ultra rapidement et la mousse est d'une superbe qualité !! Il y a plein de choix différents même des articles que je n'est jamais vu ailleurs ! Je suis vraiment satisfaite et je recommanderais sur la boutique !
Mousse EVA 10mm - 110kg/m3 - Haute densité - 1m x 1m
Cosplay Saja Boys - Version Démon - KPop Demon Hunters
Parfait ! Livraison rapide et soigné, le produit est nickel !
Les lentilles sont confortables, le bord de la vision est un tout petit peu flouté mais ça gêne pas du tout pour voir, et la couleur ressort super bien (j'ai des yeux très foncés pourtant)
La livraison était rapide et les produits sont supers !
Tout est en bon état ! Envoie rapide !
Demi-rondins en Mousse EVA