True Assay

Gold Testing Solutions (10K, 14K, 18K, 22K):
Simply rub your item on a test stone then apply a drop of the solution onto the gold streak left on the stone. If the streak is unaffected, your material is at least that karat or higher. Use progressively higher karat solutions to determine the exact purity.

Silver Testing Solution:
Simply rub your item on our test stone then apply a drop of the solution onto the silver streak left on the stone. Results are as follows: Bright red = .999 fine Silver. Dark red = .925 sterling silver. Brown = .800 silver. Green = .500 Silver.

Platinum Testing Solution:
Simply rub your item on our test stone then apply a drop of the solution onto the platinum streak left on the stone. Results are as follows: If the streak is unaffected, it is platinum. If the streak dissolves or changes color, the material is not platinum. Palladium will turn red.

2x4 Black Testing Stone:
Quality testing stone for use with our gold testing solutions. Shows marks from gold, silver and platinum very well. Simply wash and re-use a thousand times. Includes a soft non-slip backing to prevent scratching your desk.