Stone Clay - Cromartie Hobbycraft Limited

Please note, due to a high volume of orders, despatches are currently delayed and next day delivery cannot be guaranteed. Our team are working hard to despatch goods in order sequence. Apologies for any inconvenience.

Click here to see for our latest stock arrivals including new Wildlife Crystal Art Buddies

Stone Clay

The Ultimate Self-Hardening Modelling Clay!



Get ready for a whole new way to create with Stone Clay – a self-hardening modelling compound made from 60% natural stone powder! Whether you're shaping detailed figures, crafting home décor, or making sturdy ornaments, this unique clay offers a strong, stone-like finish that makes every project stand out.

Easy to mould and sculpt, Stone Clay dries at room temperature in as little as 30 minutes for thin layers, while larger creations will set in around 24 hours. Plus, if it starts to dry while you're working, just add a little water to refresh it and keep crafting!



Why You'll Love Stone Clay:

  • Self-hardening – no need for baking or firing!
  • Perfect for kids and adults – easy to shape, smooth, and detail.
  • Strong & durable – great for making long-lasting creations.
  • Paint & decorate – add colour before or after drying.
  • Mess-free crafting – no crumbling or stickiness.

Use it to craft vases, pencil holders, ornaments, fantasy figures, and even futuristic robots! With its smooth texture and easy handling, it's a fantastic way for kids to develop creativity and fine motor skills while having fun.