Top 10 Gemstones that Are Always or Often Left Unfaceted (Cabochon)

Metal_Treasure
Faceting is usually applied to transparent stones with a hardness higher than 7/10 on the Mohs hardness scale. Softer gems get scratched easier but scratches show much less on an unfaceted than on a faceted stone.

Opaque gems, softer than 7/10 gems, gems with special optical effects and inclusions are always or often just shaped and polished as opposed to faceted. The resulting form is usually a convex (rounded) obverse with a flat reverse. These gems are called cabochons (aka cabs). A cabochon may be cut in any shape, though oval is the most common.

Cutting "en cabochon" (French) means "in the manner of a cabochon".

The Top Ten

1 Star Sapphire Star Sapphire

Sapphire is the 2nd hardest gem after diamond but Star Sapphire is always cut "en cabochon" - the reason is to enable seeing the star better. Facets would ruin the star effect. - Metal_Treasure

All of these look awesome. - PhoenixAura81

2 Star Ruby Star Ruby

Rubies are very hard and ordinary rubies without a star are faceted. But the rarer Star Rubies (3% of all rubies) are not because you can see the star better without facets. - Metal_Treasure

3 Opal Opal

Opal is always cut "en cabochon" - to keep the play of light effect and to conceal possible scratches because opal is pretty soft, only 5.5-6.5 /10. - Metal_Treasure

4 Cymophane / Cat's Eye / Cat's Eye Chrysoberyl Cymophane / Cat's Eye / Cat's Eye Chrysoberyl

Awesome gemstone - AliciaMae

The 3rd hardest stone but it's not faceted in order to keep the Cat's Eye effect. - Metal_Treasure

5 Lapis Lazuli Lapis Lazuli

Lapis Lazuli is actually rock with a nice deep color and golden shimmer. - Metal_Treasure

It is left unfaceted so you can enchant your diamond tools. - coonh8er

I thought that said Logan Paul for a second - AnnieCallie

This is a very pretty rock. I love it’s blue color. - AliciaMae

6 Moonstone Moonstone

Moonstone looks beautiful! - BlueTopazIceVanilla

It's always cut "en cabochon" - Metal_Treasure

7 Rose Quartz Rose Quartz
8 Tiger's Eye Tiger's Eye

Looks like polished wood. - Not_A_Weeaboo

9 Amber Amber

Because it's soft and has objects inside, such as plants and insects - Metal_Treasure

*Jurrasic Park flashbacks* - Not_A_Weeaboo

10 Rutilated Quartz Rutilated Quartz

Not always cut "en cabochon" but often - the most important thing is to see better the beautiful rutile needles inside. - Metal_Treasure

The Contenders

11 Moss Opal Moss Opal

It's always cut "en cabochon" - it's soft and has objects inside that must be visible - Metal_Treasure

12 Jasper Jasper
13 Onyx Onyx
14 Seraphinite Seraphinite

It's cut "en cabochon" because 1) it's very soft, and 2) you see better the patterns resembling angel's wings and feathers. - Metal_Treasure

15 Turquoise Turquoise

It's soft and opaque so no point to facet it. Just polish it to show its unique colors. - Metal_Treasure

16 Pearl
17 Amazonite
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Top 10 Most Beautiful Gemstones Top Ten Gemstones Top Ten Gemstones That Can Be Yellow, Orange, or Brown Top 10 Gemstones with the Most Incredible Colors Top 10 World Famous Individual Gemstones

List Stats

17 listings
13 days old

Top Remixes (4)

1. Opal
2. Star Sapphire
3. Star Ruby
floral
1. Star Sapphire
2. Star Ruby
3. Cymophane / Cat's Eye / Cat's Eye Chrysoberyl
Metal_Treasure
1. Star Ruby
2. Lapis Lazuli
3. Star Sapphire
htoutlaws2012

WRemix
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