peridot polishing - fancy square brilliant cut

Peridot Polishing Survey Results

Popular jewelry stones, peridots can actually vary in hardness. Our IGS member survey results can help you choose the right tools and techniques for peridot polishing.

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Home Learning Center Jewelry and Lapidary Lapidary and Faceting Guides, Tips and InstructionsPeridot Polishing Survey Results

By International Gem Society

Editor’s Note: Some years ago, the International Gem Society (IGS) conducted a survey of members’ polishing techniques. Here, you’ll find the results for peridot polishing. Whether you’re just starting to learn the art of gem cutting or just looking for a new way to tackle a problematic gem material, we hope these results provide some useful suggestions.

Peridot varieties can vary in hardness. If you’re polishing forsterite (7), consult the survey results for polishing gems with 7-8 hardness. For fayalite (6.5) and tephroite (6), take a look at the results for polishing gems with 4-6 hardness.

For more information about the survey or to find results for more gemstones, click here.

Peridot Polishing Techniques

Laptype	Polish	Lubrication	Votes
Tin	Linde A/Cerium	water	20
Tin	50-100k diamond	oil or water	10
Ultra Lap	Aluminum Oxide	water	6
BATT	Linde A/Cerium	water	5
Last Lap	50k diamond	vinegar/water	3
Lucite	50-100k diamond	DiaLube or water	3
BATT	50-100k diamond	oil	3
Ceramic	100-200k diamond	none	3
Ceramic	50k diamond	oil	3
Lucite	Cerium Oxide	water	2
Copper	Diamond paste	Crystalube	2
Zinc	50k diamond	oil	2
Last Lap	Aluminum Oxide	water	2
Magic Wax	Linde

…

International Gem Society

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