Description:
【Functions】: This test stones is used in conjunction with gold test acids to determine if solid gold and karats.
【Size】: 7cmx4.3cmx0.5cm, large tesing surface make it easy to test several items at once.
【Features】: black, for the highest contrast, smooth surface is the to test gold
【Testing Method】Practical Jewelry Making Accessory, apply a drop acid test on stone, real gold will stay on the stone, fake gold will be dissolved or oxidized to blue, Acid changes color based on purity. Very 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 slightly errors due to manual measurement and different monitors.