Premium 2x4 Jewelry Testing Stone for Gold, Silver, Platinum – Anti-Skid Backing

Ensure precise and reliable metal testing with this Premium 2x4 Inch Testing Stone. Designed for use with gold, silver, and platinum, this durable touchstone provides a smooth testing surface for jewelers, collectors, and professionals.

🔹 Key Features:
✔ 2" x 4" Premium Testing Stone – Ideal for jewelry and bullion testing
✔ Rubber Anti-Skid Backing – Provides stability during tests
✔ Works with Gold, Silver, and Platinum – Compatible with most metal testing acids
✔ 100+ Testing Counts – Designed for long-term use
✔ Easy to Use – Includes instructions for accurate testing

🛠 How to Use:

1. Rub your metal piece against the stone to leave a streak.
2. Apply testing acid to analyze metal authenticity.
3. Observe color changes to determine metal purity.

A must-have for jewelers, gold buyers, and metal testers!