Diamond & Stone Gauge-K&B Diamond

The K&B Diamond & Stone Gauge is a compact, professional-grade reference tool designed for bench jewelers who need quick, reliable measurements of loose and set stones as well as settings. Spanning a measurement range of .03 points to 4 carats, this pocket-sized gauge delivers versatile functionality in a slim aluminum body that fits easily in an apron pocket or bench tray.

The center dial rotates to align printed circles indicating both carat weight size and metric size, allowing for fast visual comparison without additional tools. Flip it over, and the reverse side features physical holes marked with the same carat weight and metric information — ideal for checking set stones by feel as well as by sight. A convenient birthstone chart is also printed on the reverse, making this gauge a practical quick-reference for customer consultations and custom work alike.

Features

• Measures loose stones, set stones, and settings from .03 points to 4 carats
• Rotating center dial with printed circles showing carat weight and metric size
• Reverse side features physical measurement holes marked with carat weight and metric data
• Birthstone chart printed on reverse side for quick reference
• Compact aluminum construction for durability and portability
• Pocket-sized design suitable for bench or counter use

Specifications