The "Natural Test Stone for Determining Karat Value" is a must-have tool for anyone looking to accurately determine the karat value of silver, platinum, and gold.

With its large 6" x 3" x 3/8" size and premium wood storage box with magnetic closure, this test stone makes it easy to measure and compare the weight and density of different metals.

Whether you're a professional jeweler or just starting out in the industry, this product is sure to become your go-to tool for ensuring accurate karat values.

Don't miss out on this opportunity to upgrade your measuring and testing capabilities - order now!