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 (2 working days).
When will I receive my order and by what means of delivery?
Currently we offer home delivery via La Poste and delivery to a relay point via Mondial Relay. But we will diversify the carriers quickly.
For France:
The delivery time is set between 3 and 5 working days. This means that an order must take a maximum of 7 working days to be delivered.
For neighboring countries:
The delivery time is set between 5 and 10 working days. This means that an order must take a maximum of 12 working days to be delivered.
What are your delivery rates?
We have chosen variable delivery rates that are as close as possible to the actual weight of your order. To find out more, consult our shipping conditions on the following page: Shipping and returns
Delivery is free from 100€ of purchase in France.
Can I collect my order in person?
Currently this option is not available .
But it will sometimes be possible to request a withdrawal on site during a convention.
I received my order but there is a problem:
Is your package damaged upon receipt? Take a photo or film the unpacking . If an item is defective.
In any case, please contact us afterwards so that we can assist you.
You can contact us on our social networks or via the following email: 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 to us as long as it is neither used nor unpacked. However, the return costs will be at your expense.
Contact us on our social networks or via the following email: contact@cosplaysmart.com . We will explain how to return the product(s). Remember to keep the package in which you received your order to return it to us.
Let customers speak for us
Très belle couleur 😁
Je les ai utilisés pour le personnage de Maléfique (la version avec Angélique Jolie)
Super produit , et un super suivi de la part de cosplay smart. Je recommande
Super maniable et de bonne qualité. Merci !
Un commande reçue plus vite que l'éclair, des produits bien emballés et de bonne qualité !
Petite bonus pour le stickers car j'adore les autocollants!
Belle couvrance et belle texture
Facile à mélanger avec le blanc pour avoir la bonne nuance de gris, facile à appliquer... Et tient toute la journée sans retouche !
J’ai l’habitude de prendre mes lentilles sur cosplaysmart et vraiment jamais déçue !
Je les aient commandé il y a quelques semaines maintenant et je les aient déballer tout juste hier !
Et vraiment j’adore le résultat !
Pour faire ma Sakura Miku c’est parfait !
Elles sont 100% confortable (pour ma part) vraiment je recommande si vous voulez sortir du "hors naturel".
Je vous laisse avec quelques photos !
Envoi rapide et soigné. Description des articles conforme. C’était mon premier achat chez Cosplay Smart et pas mon dernier. Bonus pour le stickers offert, qui est la cerise sur le gâteau.
J'hésitais avec d'autre lentille ,mais elle est parfaite pour mon cosplay de Karaba la Sorcière .Merci Cosplaysmart.
Les lentilles sont super confortables! Elle couvre complètement la pupille en plus de l'Iris mais on peut très bien voir avec! Je recommande vivement ! Je les utilise pour Shinobu Kocho de Demon Slayer 🦋
Correspond exactement à mes attentes pour la « queue de cheval de Igris / solo liveling ❤️❤️❤️
Le service, la livraison, le produit, tout est impeccable !
J’ai commandé sur cosplay smart pour la première fois et je n’en suis pas déçu ! La qualité y est présente ! Je recommande ☺️
Parfait ! Bonne taille, mousse de qualité et facile à travailler
Tout simplement époustouflant, la qualité des lentilles, la livraison est arrivée à temps tout simplement parfait je recommence si vous voulez tester les lentilles (en plus le prix est abordable)