Stuccler® Diamond Gauge

Estimate diamond carat weights, gauge mounted stones without unsetting, and verify gem dimensions directly at the counter or in the field. The Stuccler® Credit Card Diamond & Gemstone Gauge is a pocket-sized appraisal tool crafted from ultra-thin 0.3 mm flexible stainless steel. Sized to standard credit card dimensions (85 mm x 54 mm), it slips into wallets, appraisal field kits, or its included protective leatherette sleeve. Featuring precision laser-cut cutouts covering Round Brilliant (0.01 ct to 3.0 ct), Pear, Oval, Emerald / Radiant (Baguette), and Square / Princess cuts, this fan template allows appraisers, bench jewelers, and pawnbrokers to visually overlay and estimate the carat weight of both loose and mounted gems without damaging delicate prong settings.

Why Choose the Stuccler® Diamond & Gemstone Gauge

• Mounted Stone Carat Estimation: The ultra-slim 0.3 mm profile allows the gauge to slip directly over mounted stones on rings, earrings, and pendants, letting you gauge carat weight on set jewelry where calipers and scales cannot reach.

• Credit Card Form Factor (85 x 54 x 0.3 mm): Built to standard card dimensions, making it effortless to carry in a wallet pocket, travel pouch, or loupe kit for appraisals on the go.

• Comprehensive Multi-Shape Cutout Matrix:

  • Round Brilliant Range (2 Rows): Micro-melee from 0.01 ct (1.4 mm) through 3.0 ct (9.3 mm), with dual-printed carat weight and millimeter reference values under every cutout.

  • Fancy Shapes (0.25 ct to 1.0 ct): Dedicated cutout scales for Pear, Oval, Emerald / Radiant Cut, and Princess / Square cuts.

• Top-Edge Metric Millimeter Ruler (0–8 cm): Features an integrated, laser-etched 80 mm rule along the top margin for checking table widths, girdle diameters, and shank thicknesses.

• Durable Stainless Steel Construction: Matte satin-finished stainless steel resists bending, corrosion, and wear, ensuring laser-etched numerals remain sharp and legible under shop loupes.

• Protective Leatherette Sleeve Included: Comes with a fitted black sleeve featuring an embossed Stuccler logo to prevent surface scratching when stored in pockets or toolboxes.