Jo-Di Diamond Gauge W/Book Steamaster Slightly radiused face designed for

Slightly radiused face designed for the interior of rings

these drills combine excellent stock removal with a clean cut finish

G10 diamond composite coating for consistent

545 USA / North American Plug 134

The included 13W bulb (113

Jo-Di Diamond Gauge W/Book Steamaster Slightly radiused face designed forThe 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