Jo-Di Diamond Gauge W/Book

The 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 risk of damage or loss during removal.

Features

• Estimates diamond weight without removing the stone from its setting
• Width and depth measurements are referenced in the included table book
• Compatible with round diamond shapes
• Compatible with fancy diamond shapes
• Designed for use by professional jewelers and appraisers

What's Included

• Jo-Di Diamond Gauge
• Reference book with width and depth measurement tables