Large Natural Test Stone 6" x 3" In Wood Box Gold & Platinum Stock Wire & Tubing 8 – 48 mm (4-1/2)

8 – 48 mm (4-1/2)

A left-hand tapered spindle mount version is also available (reference 116

and damage from misuse or abuse)

350 Italian Ring Stretcher

241 — 3M Imperial Wet or Dry Abrasive Paper

Large Natural Test Stone 6" x 3" In Wood Box Gold & Platinum Stock Wire & Tubing 8 – 48 mm (4-1/2)The Large Natural Test Stone is an essential tool for jewelers and metalsmiths who need to verify the karat value of precious metals. This professional grade stone allows you to test silver, platinum, and gold with accuracy and confidence. The generous 6" x 3" surface area provides ample working space for performing multiple streak tests, making it well suited for busy bench work. Each stone arrives ready to use and is presented in a wood storage box