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

accurate center-finding at the jeweler's bench

controlled dressing action

545 USA / North American Plug 134

Part # Metal 362-513 Yellow Gold Filled 364-513 Sterling Silver

Slightly radiused face designed for the interior of rings

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