Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon Jo-Di Diamond Weight Gauge by Grobet Sale $114.90 | / SKU 35-551 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Notify me when back in stock Email address Email me when available Jo-Di Diamond Weight Gauge Computes weight of a diamond without removing stone from mounting. Width and depth are measured with caliper and compared with measurements in table. For round and fancy shapes.