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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (24): Opal - Fire Opal, Moss Opal, Opal Doublet, Boulder Opal, Chocolate Opal, Black Opal, Opal in Matrix, Cat's Eye Opal Clear All
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Multicolor Opal Gem - 4.2ct Marquise Cabochon (ID: 323158)

Marquise Multicolor Opal

4.2ct
21.5 x 7.6 mm
$ 159.22
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Multicolor Opal Gem - 3.1ct Marquise Cabochon (ID: 324516)

Marquise Multicolor Opal

3.1ct
18.3 x 7.9 mm
$ 124.40
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Multicolor Opal Gem - 1ct Marquise Cabochon (ID: 478408)

Marquise Multicolor Opal

1ct
12.2 x 6 mm
$ 35.35
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Multicolor Opal Gem - 1.9ct Marquise Cabochon (ID: 323159)

Marquise Multicolor Opal

1.9ct
14 x 7.2 mm
$ 70.30
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Multicolor Opal Gem - 1.2ct Marquise Cabochon (ID: 478645)

Marquise Multicolor Opal

1.2ct
12.1 x 6.1 mm
$ 42.00
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Multicolor Black Opal Gem - 0.7ct Marquise Cabochon (ID: 514776)

Marquise Multicolor Black Opal

0.7ct
11.1 x 4.8 mm
$ 18.50
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Multicolor Opal in Matrix Gem - 11.9ct Marquise Cabochon (ID: 513279)

Marquise Multicolor Opal in Matrix

11.9ct
32.4 x 12.7 mm
$ 32.41
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Multicolor Opal Gem - 0.7ct Marquise Cabochon (ID: 506174)

Marquise Multicolor Opal

0.7ct
9.7 x 4.6 mm
$ 14.28
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Multicolor Opal Gem - 0.4ct Marquise Cabochon (ID: 506182)

Marquise Multicolor Opal

0.4ct
8 x 4 mm
$ 9.24
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Multicolor Black Opal Gem - 0.6ct Marquise Cabochon (ID: 514313)

Marquise Multicolor Black Opal

0.6ct
11.4 x 4.7 mm
$ 15.75
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Multicolor Black Opal Gem - 0.9ct Marquise Cabochon (ID: 514308)

Marquise Multicolor Black Opal

0.9ct
13.1 x 5.2 mm
$ 23.25
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Multicolor Black Opal Gem - 1.8ct Marquise Cabochon (ID: 514412)

Marquise Multicolor Black Opal

1.8ct
15.4 x 6.5 mm
$ 45.50
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Multicolor Opal Gem - 0.5ct Marquise Cabochon (ID: 506183)

Marquise Multicolor Opal

0.5ct
8 x 4.2 mm
$ 10.29
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Multicolor Black Opal Gem - 1ct Marquise Cabochon (ID: 514316)

Marquise Multicolor Black Opal

1ct
12.7 x 5.7 mm
$ 25.00
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Multicolor Opal Gem - 0.6ct Marquise Cabochon (ID: 506176)

Marquise Multicolor Opal

0.6ct
8.4 x 4.5 mm
$ 12.60
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Multicolor Opal Gem - 0.6ct Marquise Cabochon (ID: 505837)

Marquise Multicolor Opal

0.6ct
10 x 5 mm
$ 12.60
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Multicolor Black Opal Gem - 0.8ct Marquise Cabochon (ID: 514307)

Marquise Multicolor Black Opal

0.8ct
10.9 x 5.2 mm
$ 18.75
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Multicolor Opal in Matrix Gem - 9.3ct Marquise Cabochon (ID: 513280)

Marquise Multicolor Opal in Matrix

9.3ct
32.1 x 12.2 mm
$ 25.28
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Multicolor Black Opal Gem - 2.1ct Marquise Cabochon (ID: 514153)

Marquise Multicolor Black Opal

2.1ct
19 x 6.8 mm
$ 72.00
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Multicolor Opal in Matrix Gem - 17.3ct Marquise Cabochon (ID: 513282)

Marquise Multicolor Opal in Matrix

17.3ct
33.5 x 13.4 mm
$ 47.26
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Multicolor Opal Gem - 0.8ct Marquise Cabochon (ID: 515845)

Marquise Multicolor Opal

0.8ct
9.9 x 5.1 mm
$ 16.72
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Opal

Are You Purchasing Opal? Would you like to Know More about Opal?

GemSelect’s 100% Natural Opal is a great place to begin! Opal offers exceptional individuality within its three main classes; Precious Opal, Fire Opal, and Common Opal. The stone itself can display a remarkable amount of colors and effects that have delighted its viewers and wearers since ancient times. At GemSelect our Opal comes in a variety of forms like faceted stones, cabochons, beads, doublets, fancy cut sculptures, and beyond.

Why is Opal Often Cut Cabochon?

Opal is traditionally cut in a cabochon because the rounding and polishing of the stone can increase its natural beauty. It is a fact that some Opal is stunning with its intrinsic properties brought out by naturally cutting and polishing. However, some stones need a little more assistance to unlock their full potential like the Black Opal that often gets smoked, among others which undergo treatment to appear most divine.

How Do I Purchase Opal From GemSelect?

At GemSelect purchasing Opal is easy by shopping the category you’re in now you will have access to all types of opal varieties; including, Black Opal, Boulder Opal, Cat's Eye Opal, Chocolate Opal, Fire Opal, Moss Opal, Opal, Opal Doublet, and Opal in Matrix. You will also have the ease of shopping our Opal by Faceted Opal, Cabochon Opal, Single Loose Opal, Opal Pairs, and Opal Lots.

Many buyers look for a specific color or size when purchasing Opal. If this is the way you prefer to shop, we suggest you filter by base color: Blue, Brown, Green, Multicolor, Orange, Pink, White, and Yellow. After doing this, look for the piece you desire, or you can use another filter if our inventory is too vast.

If you have any questions or would like to contact us, please visit our ‘FAQ’ or ‘Contact GemSelect.’

What types of designs and Jewelry are suitable to make with Opal?

At GemSelect we recommend earrings, necklaces, pendants, opal rings, broaches and beyond. Opal is best rendered in the metal of your choice depending on the design of your jewelry and the color of your stone. The traditional favorites for mounting Opal include gold, white gold, silver, and rose gold. If you’re purchasing stones for a loved one’s October Birthday or a 14th Anniversary, you have come to the right place. The sentimental value of Birthstone gifts and traditionally accepted Anniversary stones will delight your loved ones and be cherished by them forever.


Opal can be drilled to make a pendant or earrings in addition to many other ways of 'Setting Opal.' Oversized Cabochons are great for 'pendants' and oversized cabochon rings. Men and women both wear Opal. The varieties which are famous for Men’s jewelry are Black Opal, Chocolate Opal, Boulder Opal and 'Opal in Matrix.' The varieties we suggest for women’s jewelry are Opal, Opal Doublet, Moss Opal, and Fire Opal.

What are Opal’s Color and Hardness Properties?

Opal ‘s hardness according to the Mohs Hardness Scale is 5.5-6.5 out of 10, so it should be cared for when wearing and designing jewelry with it. Multicolor Opal is sought after and can be extremely valuable depending on the specimen in question. The value of these stones is based on their properties of color, cut, and size. A beautiful Multicolor Opal can range from Opaque to Translucent and can change in its base hue to nearly any color imaginable. These complex combinations are what make the Opal so distinctive. Every Opal Gem can have a completely different set of characteristics and the ones that are unique, and large, are very rare and highly sought after.

Certified Customer Reviews
Overall Rating -> 10 star ratings
I would recommend GEMSELECT based upon the variety of gems. Gems that i didn't expect to even be apart of the selection and it gave me more options. Options in which played a key role in finding the right gem. Its always good to have options especially when trying to formulate a good piece of art work that has uniqueness. Which ultimately captures costumers eye appeal.
Posted By Left.Right.Center in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
I found a beautiful rose quartz stone in the right size for the right price.
Posted By Calico9999 in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Gemselect is o.k the prices are pretty good, but the shipping prices really suck, one time I order from them and order got lost or never came, but they were good about fixing the problem and rectifying the situation, the stones and good, and the ones that come in the mail, look just as pictured on the website, or all it's not bad and its were I go to get my stones.
Posted By Spinach in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Perfect experience. Pictures were accurate, selection was easy to maneuver. Product arrived as ordered.
Posted By Jess in February, 2019
Source: Bizrate
Overall Rating -> 9 star ratings
Easy to shop through gemselect and will look there for future purchases.
Posted By Childcapo in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
good value
Posted By Don in February, 2019
Source: Bizrate
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart