A touchstone, also refered to as a test stone, is a small, abrasive, silicone based stone that is impervious to acid and easy to clean. When a metal is rubbed on a touchstone, a small amount of the metal is deposited on the stone, forming a colored stripe. This is usually compared to a strip ground from a known metal. A drop of testing solution is then applied to the stripes. By observing the reaction between the acid and the metal stripes, the purity of the metal can be determined.
3 Bottles Silver Test Acid Testing Sterling Jewelry Solution Liquid Metal Tester
You will receive 3 bottles of Silver Testing Acid, used to determine the Silver content of the piece being tested. Â· Each bottle has 1/2 fl oz of acid. Â· The sturdy plastic bottles maximize safety and allow the user to easily squeeze out one drop at a time. Â· All bottles have different cap colors to help keep acid karats organized easier Â· Latex Gloves are recommended with the use of any testing acids for safety Â· testing instructions included Â· black testing stone is recommended (sold separate from acids) Â·
This Gold Testing Kasoti Is A Small, Flat Stone Which Can Be Used To Test The Purity Of Gold Items. It Measures 2 1/2" X1 1/2"x 1/8". To Be Used With Gold Testing Keys And Acids (not Included). * 2.5" X 1.5" (6mm) * Compact Size * Use With Acid (not Included) * Test Gold Quality * Professional Quality BLACK FRIDAY Specials -Cyber Monday & Holiday Deal
Jewelers Gold Testing Supplies 22k 24k 1 Bottle Test Solution Plus Scratch Stone and Free 22k Mini Gold Bar
Instructions and purity chart are included. The Gold Test Acid will change color if the metal is not at least 22k pure gold. Stone measures (inches) 2" x 2", and will NOT damage the item(s) you wish to test. Excellent for testing jewelry at home, or gold coins & artifacts on the go, at auctions, pawn shops, and when trading gold for cash---know the value of the gold you're turning in!
Jeweler's Gold Testing Pieces-14 Karat Acid Test Solution Easy to Use
Instructions and purity chart are included. The Gold Test Acid will change color if the metal is not at least 14k pure gold. Stone measures (inches) 2" x 2", and will NOT damage the item(s) you wish to test. Excellent for testing jewelry at home, or gold coins & artifacts on the go, at auctions, pawn shops, and when trading gold for cash---know the value of the gold you're turning in!
Silver Acid Testing Solution 1/2 oz Bottle When testing items said to be Silver: Scratch or rub the metal you are testing onto the stone. Scratch hard enough to make a visible streak or mark onto the stone. The Silver will change colors based on purity! Â· 90%-100% - Dark Red Â· 80%-90% - Light Red or Brown Â· 65%-75% - Light Green *Creamy white results indicate the item is sterling silver. *Green results indicate the item is plated. Great for testing Silver Jewelry, Bullion, Bars, Etc.. Please contact us with any questions.
10 New 10K Gold Testing Solutions This is a new set of ten bottles of 10 karat gold testing solution Each bottle has 1/2 fl oz of acid These are the finest acids made today Sturdy plastic bottles maximize safety and allow the user to easily squeeze out one drop at a time Due to testing acid being classified as a hazardous material it cannot be shipped by air and can only be shipped to the lower 48 states.
PuritestTM Large Stone 6"x3" with Rubber Backing Gold Testing Solutions Kit 10k 14k 18k 22k Silver Platinum Scratch Stone
Large 6x3 inch PuriTESTTM Pro-Quality Testing Stone. This large glass test stone includes a rubber grip backing. This test stone measures 6" x 3" x 1/4" *YOU CAN TEST SEVERAL PIECES AT ONCE WITH THIS EXTRA LARGE TEST STONE!* (Test Stones are used to test your gold jewelry without actually testing on the piece itself and ruining it. Instead you apply the acid to a mark that you rub on the test stone.) This stone allows to to test quicker by allowing you to test many items all at the same time! BEWARE of other Amazon sellers stating they sell this. Only PuriTESTTMhas these stones.