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THIS TOUCHSTONE IS USED TO VERIFY THE GOLD CONTENT OF THE ITEM
- The acid changes color according to purity. Very easy to use.
- In the touchstone acid test, real gold will stay on the touchstone, and fake gold will dissolve or oxidize to blue.
- This solution is suitable for testing any gold that you think is 10K, 14K, 18K, 22-24K, silver and platinum.
- It is very suitable for testing jewellery, coins, antique gold, silver and platinum collectibles.
10K Gold
14K Gold
18K Gold
22-24K Gold
This touchstone is specially designed for professional jewelers and enthusiasts to determine the appropriate gold carat number and identify precious metals such as gold, silver and platinum. This touchstone should be used with test acid solution and test needle (not included).
How to use: Put a drop of test gold on your jewelry sample, the real gold will stay on the touchstone, and the fake gold will dissolve or oxidize to blue. The acid changes color according to purity. Very easy to use.
Specifications: The size is S and L, respectively, the weight is 66g and 122.8g; the length is 7.6cm / 3in and 9.9cm / 3.9in; the width is 3.8cm / 1.5in and 5.2cm / 2in
Note: The size is manually measured, there may be an error of 0-2 cm, which is a normal phenomenon. And due to the differences between different monitors, the picture may not reflect the actual color of the item. Thanks!
DKU
Reviewed in the United States on May 14, 2022
Works as designed for.
norma
Reviewed in the United States on March 14, 2022
when i open the plastic theres a substance like sticky black color, i wash it really many times to remove the stickyness of the black substance and i dried it and i use it, it work though
valerie
Reviewed in the United States on June 6, 2021
Works great. Easy to use.
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