Jo-Di Diamond Gauge W/Book Steamaster accurate center-finding at the jeweler's

accurate center-finding at the jeweler's bench

or hand-operated setups

and the compact form factor fits easily in a pocket or apron

This wheel is intended for use with the Glendo GRS Power Hone system

Jo-Di Diamond Gauge W/Book Steamaster accurate center-finding at the jeweler'sThe Jo Di Diamond Gauge with Book allows professional jewelers to accurately estimate the estimated weight of a diamond without removing the stone from its mounting. Using measured width and depth values referenced against the included book, this gauge supports calculations for both round and fancy diamond shapes making it an efficient tool for appraisers, bench jewelers, and estate jewelry professionals who need reliable weight estimates without the