Diamond Gem Stone Size Gauge Tool

This versatile Diamond Stone Size Gauge has holes for measuring stones- and extensions for gauging mountings. Marked with carat sizes on one side and millimeters on the other. The holes are to measure the stones.  Whereas the extensions are to measure the mountings. If you have stones already mounted, use the extension to estimate the carat size.  The gauge measure in carat and millimeter.

- The holes in the gauge are used to measure stones
- Extensions are used to measure mountings
- One side shows millimeters and the other side shows the carat measurements
- Size: 4" Diameter