Chelsea Filter Knew Concepts One 90° V-shaped groove for

One 90° V-shaped groove for angular bending

Helps transfer layout lines and design marks onto reflective metal

Sold by the pound

The Peer-Vigor Boley Style BB Nickel Plated Steel Tweezers are a classic bench tool trusted by jewelers

Round cable dapped and flat construction with alternating rondel-shaped beads between links

Chelsea Filter Knew Concepts One 90° V-shaped groove forThe Chelsea filter is a compact gemological tool used to help identify certain red, blue, and green gemstones by observing characteristic color reactions under filtered light. It is especially useful for spotting imitations mixed into colored stone parcels and jewelry, and for differentiating emerald from common emerald look alikes. Features Assists in identifying select red, blue, and green gemstones Commonly used to detect simulants in colored stone