Gold Testing Stone & Wood Box Jewellery Gold Acid Test Touchstone Kit 100x50mm

A smooth black touchstone for gold acid-testing, supplied ready-to-use in its own wooden storage box.

⭐ At a glance

📏 Stone size: 100mm x 50mm, 10mm thick

✅ Works with any standard gold testing acid kit

📦 Includes: 1 x touchstone, 1 x wooden storage box (testing acids not included)

✔️ Condition: Brand new

🔧 What it does & how to use

This touchstone is used alongside gold testing acids to quickly check the purity of gold and other precious metal items. It's a standard bench tool for jewellers, pawnbrokers, scrap gold buyers and jewellery repairers, and is straightforward enough for hobbyists to use as well.

• Streak test: Lightly rub the gold item across the black stone surface to leave a visible metal streak.
• Apply acid: Add a drop of the appropriate gold testing acid onto the streak.
• Check reaction: Watch how the streak reacts to the acid to help judge the metal's purity.
• Store safely: Return the stone to its wooden box between uses to keep the testing surface clean and protected.