New Silver Jewelry Testing Kit Silver Acid Test Liquid with Stone

Description

Silver Testing Acid Solution 12g + Test Stone
Color-coded white 12g bottle of test acid for silver.
Includes one test stone that measures 2″ (Size may vary between 2×1.5 and 2×3).
Silver testing via acid solutions are a classic way of testing silver items for their purity. This method is best used on scrap silver to be smelted due to the destructive nature of the testing, but can be used on silver pieces to be worn if the testing if done in an inconspicuous spot.
PLEASE NOTE:
Silver testing acids are made using
NITRIC ACID
that can harm the skin. Please exercise caution when using this method of testing, including proper protective eye wear and gloves. Nitric Acid can burn the skin and leave stains.
Procedures for Testing Gold
To test for the karat value of gold, platinum and silver, you will need the following materials and tools:
Black acid testing stone that is washed thoroughly with water prior to each test OR a needle file
Acid
Reference Gold – Either Gold Testing Needles or Verified Silver Pieces
Testing for Silver
Rub or scrape the piece against a black testing stone. Rub or scrape a piece you know the purity of next to it. Be sure the marks are full and noticeable. Place a drop of silver testing acid solution on each mark. The acid will change colors depending on the purity; you should compare the reactions between the two marks to ensure accuracy. When testing on a piece of jewelry, create a small gouge in the piece in an inconspicuous spot on the piece. Place a small drop of acid on the mark, and observe the color change.
Fine Silver – Bright Red
925 Silver – Dark Red
800 Silver – Brown
500 Silver – Green
Take into consideration the the test stone is black this will make the color reaction of the solution have a slightly different color:
Fine and 925 Silver – Creamy Color
800 Silver – Gray Color
500 Silver – Light Green Color
Note: The silver acid solution will dull the polish on the piece when tested directly on the piece, and may stain the piece.
Made in USA