If you have been researching metal clay, you have probably come across two terms: silver clay and PMC (Precious Metal Clay). They sound similar, and they are — but there are some important differences that can affect your results, your budget, and your creative process.
In this guide, we break down the key differences between silver clay and PMC so you can make the best choice for your projects.
What Is Silver Clay?
Silver clay (sometimes called Art Clay Silver) is a crafting material made from microscopic particles of pure silver (.999 fine silver) mixed with an organic binder and water. You shape it like regular clay, let it dry, then fire it with a torch or kiln. The binder burns away, and the silver particles fuse together into solid silver through a process called sintering.
What Is PMC?
PMC stands for Precious Metal Clay, and it is actually a brand name — the original metal clay developed in Japan in the 1990s by Mitsubishi Materials. PMC works on the same principle as silver clay: shape, dry, fire. Over the years, PMC has released several versions (PMC Original, PMC+, PMC3, PMC Flex) with different firing requirements and shrinkage rates.
Key Differences
1. Shrinkage Rate
All metal clays shrink during firing as the binder burns away. Silver clay (Art Clay Silver) typically shrinks about 8-10%, while PMC3 shrinks about 10-12% and the original PMC shrinks up to 25-30%. Less shrinkage means more predictable sizing, especially for rings.
2. Firing Temperature and Time
Silver clay can be torch-fired in as little as 2 minutes for small pieces, making it very beginner-friendly. PMC3 can also be torch-fired, but some PMC varieties require higher kiln temperatures and longer firing times. For most hobby users, both modern versions (Art Clay Silver and PMC3) are comparable.
3. Workability
Silver clay tends to dry slightly faster than PMC, which means you need to work a bit more quickly. PMC Flex was specifically designed to stay workable longer. Both can be rehydrated with water if they start to dry out. The feel and texture vary slightly — some artists prefer one over the other, and it often comes down to personal preference.
4. Price
Prices fluctuate with the silver market, but generally silver clay (Art Clay Silver) and PMC3 are similarly priced. The main cost factor is the silver content per gram. Both are available in various package sizes, from small 7g packs for beginners to larger 50g packs for experienced makers.
5. Availability
PMC originated in the US market and is widely available in North America. Silver clay (Art Clay Silver) is more common in Europe and Asia. In the Netherlands and EU, silver clay is typically easier to find and more affordable due to distribution.
Which Should You Choose?
For beginners, we recommend starting with silver clay (Art Clay Silver) because it has a lower shrinkage rate, is easy to torch-fire, and offers predictable results. It is also what we include in our Silver Clay Starter Kits, so you can get started right away with everything you need.
Experienced makers often try both and develop a preference based on their working style. There is no wrong choice — both produce beautiful, solid .999 fine silver jewelry.
Quick Comparison Table
| Feature | Silver Clay (Art Clay) | PMC3 |
|---|---|---|
| Silver purity | .999 fine silver | .999 fine silver |
| Shrinkage | 8-10% | 10-12% |
| Torch firing | Yes (2-5 min) | Yes (2-5 min) |
| Kiln firing | Yes (650-800C) | Yes (650-900C) |
| Drying speed | Moderate-fast | Moderate |
| Best availability | Europe / Asia | North America |
Ready to Get Started?
Browse our starter kits to begin your silver clay journey, or check out our supplies for individual clay packages and tools.
