Measuring Tool for Stone

The Precision Fan-Shaped Diamond & Gemstone Measuring Tool is a specialized, compact workshop gauge engineered to determine the exact millimeter diameters of loose or mounted stones quickly.

Constructed from durable metal plates bound together on a heavy-duty stainless steel split ring, this fan-style gauge features individual tapered sizing pins. Each plate is hard-etched with high-contrast measurement markings, allowing individual creators to sort gemstone parcels, cross-verify diamond layouts, and prepare precise setting seats with zero calculation errors.

Key Product Features

• Graduated 1.0mm to 6.5mm Calibration Range: Features a comprehensive range of graduated pins to handle fine accent pointers up to substantial center stones.

• Fan-Blade Split Ring Assembly: The individual blades pivot fluidly around a central steel ring, allowing you to isolate a single pin or fan them out cleanly for fast size comparisons.

• Hard-Etched Metric Diameter Markings: Each metal plate features clear, stamped diameter ($\varnothing$) numeric values that stay highly visible under active studio lighting and resist rubbing off from oily fingers.

• Pointed Taper Profile Tips: Engineered with specialized conical heads to mirror standard round-cut stone geometries, making it easy to test seat alignment depths cleanly.