Diamond Gemstone Round Stone Gauge Measuring Gem Diamond Sizing Tool Jewellery

Metal diamond gauge for measuring round stones from 0.01 to 6 carats

⭐ At a glance

📏 Measures round diamonds/gemstones from 0.01 to 6 carats

✅ Analogue gauge, suitable for jewellers and hobbyists

✔️ New, unbranded/generic tool

🔧 What it does & how to use

This metal gauge is used to quickly estimate the carat weight of a round diamond or gemstone without weighing it on a scale. Each hole on the gauge corresponds to a specific stone diameter, which is marked against its estimated carat weight, covering a range from 0.01 up to 6 carats.

To use it, simply place the loose round stone into the holes on the gauge, starting with a hole you expect to be close in size, and work up or down until you find the hole the stone sits neatly into without falling through. Read off the carat weight marked next to that hole. It's a handy, low-cost way for jewellers, gemmologists and hobbyists to get a quick carat estimate at the bench without dedicated weighing equipment.