Metal Testing Stone Large Jewelry Gold Tester Jewelry Making Accessory…

Description:

【Functions】: This testing stone is used with gold test acids to determine solid gold and karats.
【Size】: 7cmx4.3cmx0.5cm, large testing surface for testing several items at once.
【Features】: Black color for high contrast, smooth surface for best gold testing results.
【Testing Method】 Practical Jewelry Making Accessory, apply acid test drop on stone, real gold stays on stone, fake gold dissolves or oxidizes to blue, acid changes color based on purity. Easy to use.
【Widely Applications】: Perfect for testing jewelry, coins, antique gold, silver, platinum collectibles.

Specification:

Material: Stone
Size: 7cmx4.3cmx0.5cm/2.76inchx1.69inchx0.20inch

Package Includes:

1Pcs Gold Testing Stone

Note:

Please allow some errors due to manual measurement and different monitors.