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Buy Opal Gemstones

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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (211): 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 Boulder Opal Gem - 35.8ct Pear Cabochon (ID: 321923)

Pear Multicolor Boulder Opal

35.8ct
26.4 x 23.5 mm
$ 250.67
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Multicolor Boulder Opal Gem - 21.3ct Pear Cabochon (ID: 522171)

Pear Multicolor Boulder Opal

21.3ct
26.5 x 19.4 mm
$ 106.30
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Multicolor Opal Gem - 12.6ct Pear Cabochon (ID: 462216)

Pear Multicolor Opal

12.6ct
18.7 x 13.4 mm
$ 507.68
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Multicolor Boulder Opal Gem - 13.5ct Pear Cabochon (ID: 522129)

Pear Multicolor Boulder Opal

13.5ct
23.8 x 16.3 mm
$ 67.60
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Multicolor Opal Gem - 2.4ct Pear Cabochon (ID: 506169)

Pear Multicolor Opal

2.4ct
11 x 8.9 mm
$ 49.77
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Multicolor Boulder Opal Gem - 32.4ct Pear Cabochon (ID: 321925)

Pear Multicolor Boulder Opal

32.4ct
28.4 x 23.2 mm
$ 227.08
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Multicolor Opal Gem - 15.4ct Pear Cabochon (ID: 462133)

Pear Multicolor Opal

15.4ct
22.8 x 17.9 mm
$ 619.60
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Multicolor Opal Doublet Gem - 1ct Pear Cabochon (ID: 503560)

Pear Multicolor Opal Doublet

1ct
9.1 x 6.1 mm
$ 22.16
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Multicolor Boulder Opal Gem - 21.2ct Pear Cabochon (ID: 449597)

Pear Multicolor Boulder Opal

21.2ct
25 x 18.5 mm
$ 148.40
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Multicolor Boulder Opal Gem - 20.7ct Pear Cabochon (ID: 300456)

Pear Multicolor Boulder Opal

20.7ct
23.1 x 15 mm
$ 145.18
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Multicolor Boulder Opal Gem - 21.5ct Pear Cabochon (ID: 321926)

Pear Multicolor Boulder Opal

21.5ct
28.9 x 18.8 mm
$ 150.22
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Multicolor Boulder Opal Gem - 17.3ct Pear Cabochon (ID: 302899)

Pear Multicolor Boulder Opal

17.3ct
23.5 x 13.5 mm
$ 120.89
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Multicolor Boulder Opal Gem - 13.4ct Pear Cabochon (ID: 321836)

Pear Multicolor Boulder Opal

13.4ct
21.4 x 15 mm
$ 93.45
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Multicolor Boulder Opal Gem - 26.2ct Pear Cabochon (ID: 321839)

Pear Multicolor Boulder Opal

26.2ct
23.2 x 17 mm
$ 183.61
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Multicolor Boulder Opal Gem - 28ct Pear Cabochon (ID: 321922)

Pear Multicolor Boulder Opal

28ct
27.2 x 19.6 mm
$ 196.21
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Multicolor Boulder Opal Gem - 8.6ct Pear Cabochon (ID: 321835)

Pear Multicolor Boulder Opal

8.6ct
18.9 x 12.5 mm
$ 60.20
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Multicolor Boulder Opal Gem - 31.2ct Pear Cabochon (ID: 321927)

Pear Multicolor Boulder Opal

31.2ct
29.5 x 20.6 mm
$ 218.40
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Multicolor Boulder Opal Gem - 7.8ct Pear Cabochon (ID: 302919)

Pear Multicolor Boulder Opal

7.8ct
16.4 x 10.5 mm
$ 54.67
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Multicolor Boulder Opal Gem - 45.2ct Pear Cabochon (ID: 321928)

Pear Multicolor Boulder Opal

45.2ct
33.4 x 19.8 mm
$ 316.05
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Multicolor Boulder Opal Gem - 22.9ct Pear Cabochon (ID: 453534)

Pear Multicolor Boulder Opal

22.9ct
29.2 x 14.7 mm
$ 504.68
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Multicolor Boulder Opal Gem - 4ct Pear Cabochon (ID: 371102)

Pear Multicolor Boulder Opal

4ct
15.8 x 7.6 mm
$ 29.16
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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
man their gems are pretty good, and the prices aren't to bad either, I like checking out hte gems on there website, beceause the pictures of the gems are taken pretty well, and you can see the table, and the facets.
Posted By Spinach in March, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
I love gemselect and I have bought a fair amount from them. The only complaint I have is not being able to save gems. I have a lot of projects so i am in the market for a lot of different gems and it's so disappointing to have to delete them all just to purchase one or two that I have saved in my cart.
Posted By S.Hicks in March, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
I always check this site because they have unique options.
Posted By Lisa in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Great website to navigate. Awesome Gem selection! Nice photos and discriptions for all of the gems for sale. You can find gems in all price ranges. Checkout was a breeze.
Posted By Timmy in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
They had an extensive gemstone selection in all different cuts, sizes, and colors. They also had very good and workable prices. All of these aspects pulled me in as a customer.
Posted By Josh in February, 2019
Source: Bizrate
Overall Rating -> 9 star ratings
It all depend on the product I will receive and have it verified by my in law jewellers.
Posted By Vodka 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