Coins

Used with test stones and solutions to determine contents of gold. Go to How to Use Testing Needles for more detailed information.

Set of 4 (10k, 14k, 18k, Silver) Used with test stones and solutions to determine contents of gold. Go to How to Use Testing Needles for more detailed information.

Used with test stones and solutions to determine contents of gold. Set of 5 (8k, 10k, 12k, 14k, 18k). Go to How to Use Testing Needles for more detailed information.

Rare earth magnets detect iron particles from jewelry and coins. Rare earth magnets are made of a mixture of rare earth elements and are the strongest magnets to be found. This powerful rare earth magnet, rated 29 lbs, comes in an individual tube for convenient handling. Rare earth magnets are the ultimate product for detecting impurities in precious metals.

Test Acid Neutralizer prepares test stones for precise testing results. Test acid solutions leave residues which remain on the test stones after testing metals. This test acid neutralizer removes remaining particles and balances the pH of the test stones. When using it, watch for effervescent bubbling action.

Sturdy plastic bottles maximize safety and allow the user to easily squeeze out a drop at a time. Go to How to Use Testing Acids for more detailed information. *Shelf life: 2 yrs

Sturdy plastic bottles maximize safety and allow the user to easily squeeze out a drop at a time. Go to How to Use Testing Acids for more detailed information. *Shelf life: 2 yrs

Sturdy plastic bottles maximize safety and allow the user to easily squeeze out a drop at a time. Go to How to Use Testing Acids for more detailed information. *Shelf life: 2 yrs

Sturdy plastic bottles maximize safety and allow the user to easily squeeze out a drop at a time. Go to How to Use Testing Acids for more detailed information. *Shelf life: 2 yrs

Sturdy plastic bottles maximize safety and allow the user to easily squeeze out a drop at a time. Go to How to Use Testing Acids for more detailed information. *Shelf life: 6 mos

Sturdy plastic bottles maximize safety and allow the user to easily squeeze out a drop at a time. Go to How to Use Testing Acids for more detailed information. *Shelf life: 9 mos

Economy stone for test acids

This large size natural test stone is used with test acids and test needles to determine the karat value of products. It's ideal for gold testing. This stone offers value and convenience.

This large size natural test stone is used with test acids and test needles to determine the karat value of products. It's ideal for gold testing. This stone offers value and convenience.

Natural obsidian test stones give precise readings when testing for gold purity. Obsidian is a volcanic glass produced when lava becomes cold. It is been used for years to make the sharpest knives. Obsidian test stones, on the contrary to rougher test stones, have a perfectly smooth surface that provides more consistent and reliable readings.

2x3x0.25" Natural obsidian test stones give precise readings when testing for gold purity. Obsidian is a volcanic glass produced when lava becomes cold. It is been used for years to make the sharpest knives. Obsidian test stones, on the contrary to rougher test stones, have a perfectly smooth surface that provides more consistent and reliable readings.

Natural obsidian test stones give precise readings when testing for gold purity. Obsidian is a volcanic glass produced when lava becomes cold. It is been used for years to make the sharpest knives. Obsidian test stones, on the contrary to rougher test stones, have a perfectly smooth surface that provides more consistent and reliable readings.

Natural obsidian test stones give precise readings when testing for gold purity. Obsidian is a volcanic glass produced when lava becomes cold. It is been used for years to make the sharpest knives. Obsidian test stones, on the contrary to rougher test stones, have a perfectly smooth surface that provides more consistent and reliable readings.

Top grade dessicant silica gel is contained within a compact aluminum canister. Provides lifetime protection and has a built-in indicator that turns from blue to pink to signal the need for reactivation. Easy to reactivate in any oven. Covers 3 cubic ft

Corrugated carton has a built-in indicator that turns from blue to pink to signal when to reactivate. Reactivates easily in a conventional oven. Ideal for small safes, display cabinets, etc. Protects 15 cubic feet of enclosed space.