The holes in the gauge are used to measure stones, while the extensions are used to measure mountings.
One side shows millimeters, the other side shows the corresponding carat measurements.
With Birth Stone Chart
Dimensions: 3-1/2” x 2-3/4” x 1/8”
Units: Ct. and mm
Birth Stone Chart
Brushed Aluminum
One side shows millimeters, the other side shows the corresponding carat measurements.
With Birth Stone Chart
Dimensions: 3-1/2” x 2-3/4” x 1/8”
Units: Ct. and mm
Birth Stone Chart
Brushed Aluminum