Create Beautiful DIY Casts & Aromatherapy Stones with Premium Plaster Powder

Whether you're crafting decorative figurines, scented aromatherapy stones, candle holders, or intricate mould castings, this High Density White Plaster Powder is your go-to crafting material. Available in 200g and 500g options, it's perfect for hobbyists, artists, and DIY enthusiasts who want professional-quality results at home.

This fine-grade gypsum powder sets with a smooth, bright white finish that's easy to sand, paint, or decorate. Its high-density formula ensures crisp detail reproduction in moulds, minimal shrinkage, and excellent hardness once cured — ideal for both beginner and experienced crafters.

Made in Mainland China.

Key Features

🏺 High-Density Formula – Reproduces fine mould details with precision; minimal air bubbles and low shrinkage
⚗️ Versatile Applications – Ideal for casting moulds, aromatherapy gypsum stones, decorative ornaments, candle holders, and art sculptures
🎨 Bright White Finish – Sets to a clean, smooth white surface that's easy to paint, dye, or leave natural
✂️ Easy to Mix & Pour – Simply mix with water to your desired consistency; sets firm and hard within minutes
📦 Two Size Options – Choose 200g for small projects or 500g for larger and multiple castings
🌿 Great for Aromatherapy – Highly porous when set, making it perfect for absorbing and slowly diffusing essential oils

How to Use

Measure your plaster powder and water at a ratio of approximately 1.5:1 (powder to water) by weight.
Slowly add the powder into the water and stir until smooth and lump-free.
Pour the mixture into your silicone or plastic mould.
Gently tap the mould to release air bubbles.
Allow to set for 20–40 minutes, then carefully demould.
Leave to fully cure and dry (24 hours recommended) before painting or applying essential oils.

Ideal For

DIY aromatherapy stones & essential oil diffusers
Decorative figurines, ornaments & home décor
Candle holders & flower pot casting
Art class projects, school crafts & hobby casting
Resin & silicone mould testing

Pair It With These Great Products

10-Pack Clear DIY Snow Globe Kit – Empty Water Globe Spheres – Perfect companion for creative craft projects
10ml Natural Essential Oils | 9 Scents for Diffuser & Humidifier – Infuse your gypsum aromatherapy stones with beautiful scents
10-Pack Mini Teddy Bear Plush Dolls for Bouquets & DIY Gifts – Combine with plaster crafts for unique handmade gift sets

For more crafting inspiration and safety tips when working with plaster of paris and gypsum materials, visit the U.S. Consumer Product Safety Commission (CPSC) for general craft material safety guidance.

Learn more: Molding (process)

Frequently Asked Questions

Q: What is the difference between plaster powder and gypsum powder for DIY casting?

A: Plaster powder and gypsum powder are very closely related — both are calcium sulfate-based materials used for casting and moulding. This high-density white plaster/gypsum powder is specially processed to offer a finer grain, stronger set, and smoother finish compared to standard craft plaster, making it ideal for detailed DIY castings and aromatherapy stone making.

Q: Can I use this plaster powder to make aromatherapy diffuser stones?

A: Absolutely! Once set and fully dried, gypsum plaster is naturally porous, which allows it to absorb essential oils and slowly release their fragrance into the air. Simply add a few drops of your favourite essential oil to the finished stone and enjoy a natural, long-lasting scent diffuser. Check out our Natural Essential Oils range to find the perfect scent.

Q: How long does this plaster powder take to set and fully dry?

A: Initial setting (hardening in the mould) typically takes 20–40 minutes depending on the water-to-powder ratio and ambient temperature. Full curing and drying to maximum hardness takes approximately 24 hours. Avoid painting or applying oils until fully cured for best results.

Q: Is this plaster powder safe to use indoors?

A: Yes, when used as directed. Mix in a well-ventilated area and avoid inhaling the fine powder dust during mixing — we recommend wearing a basic dust mask while handling the dry powder. Once mixed and set, the material is stable and safe for indoor display and use.

Q: Which moulds work best with this casting plaster powder?

A: Silicone moulds are the most popular choice for plaster casting as they are flexible, non-stick, and allow for easy demoulding. Plastic and rubber moulds can also be used with a mould release spray. Avoid using cardboard or paper moulds as they may absorb moisture and distort the shape.