How to Use a Gemstone Gripper for Safe Stone Setting
By Jewellery Tools UK — Hand Tools for Jewellers & Silversmiths | Published: 2026-10-30
Category: How-to Guides
Learn to hold and inspect loose gems safely with a gemstone gripper. This guide covers grip technique, inspection tips, and common mistakes to avoid.
Quick Answer
Use a four-prong gemstone gripper to hold loose stones securely by their girdle, inspect them under magnification, and set them without touching the facets.
Why Use a Dedicated Gemstone Gripper
Handling loose stones with your fingers leaves oils and dirt on the facets, which can affect how the stone sits in a setting and how light passes through it. A gemstone gripper keeps the stone clean and gives you precise control without squeezing the delicate crown or pavilion.
Unlike tweezers, which can slip on round or smooth stones, a four-prong claw holder grips the girdle evenly. That makes it the right tool for inspecting stones before setting, checking a stone's fit in a mount, or displaying a stone for a customer.
The trade-off is that a gripper is not meant for heavy pressure. It holds the stone securely for inspection and positioning, but you should not use it to force a stone into a setting. That job belongs to setting tools designed for pushing metal.
Step-by-Step: Using a Gemstone Gripper
- Prepare the stone and gripper: Clean the stone and your hands. Hold the gripper in your dominant hand and press the plunger to open the prongs. Position the prongs so they will grip the stone's girdle, not the crown or pavilion. Check that the prongs are aligned with the girdle before releasing the plunger.
- Grip the stone securely: Slowly release the plunger so the prongs close evenly around the girdle. The stone should be held firmly but without excessive pressure. If the stone tilts or slips, open the prongs and reposition. Avoid gripping the stone by its facets; this can cause chipping or leave marks.
- Inspect and handle the stone: Hold the gripper up to a loupe or microscope to inspect the stone. Rotate it gently to view all sides. Keep the stone over a soft surface in case it slips. When moving the stone to a setting, use the gripper to position it, then release the plunger to open the prongs and let go. Always work over a padded bench mat to catch the stone if it drops.
Recommended Tool
- Gemstone & Diamond Gripper — 4 Prong Claw Holder, 150 mm, Silver, Jewellers' Display Tool: This 150 mm gripper uses a plunger mechanism to extend and retract four fine steel prongs, giving one-handed control over small stones. The spring-loaded claws hold the stone firmly without touching the facets, so you can inspect and set stones without leaving fingerprints or causing damage.
Gemstone & Diamond Gripper — 4 Prong Claw Holder, 150 mm, Silver, Jewellers' Display Tool
