Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon Accurate Diamond Gauge by Grobet Sale $12.70 | / SKU 35-560 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 Accurate Diamond Gauge Folds to the size of a half-dollar. Measures round and baguette stones from 1/100 to 2 carats. Made of aluminum for long, durable service.