Buy Opal Cabochons: Natural Precious and Common Opal Gems

Opal Cabochons

More than any other gem, each opal is distinctly an individual. No other stone has as rich and varied a folklore. Opals are also the most delicate gems commonly worn. They require special care to ensure their health and longevity.

Opal's fire was long thought to be the result of iridescence. However, with the advent of scanning electron microscopes, we now know that it is a result of diffraction.

Opal is relatively soft, with a rating of 5.5-6.5 on the Mohs scale. Despite its frequent use in rings, opal is a poor choice for a ring stone; it is much better suited to earrings, pins, and pendants.

Major suppliers include Australia, Brazil, Mexico, and the US. Values are normally determined by the presence and nature of color flashes.

Gemstone Information

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I purchase all of my stones from GemSelect! They're the best I've found for both selection and value.

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Overall Rating -> 10

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I have used Gem Select many times over the past 10 years and have always been happy with the product & services

Posted By Ordain in August, 2023

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Overall Rating -> 10

This is probably the fourth time I havebought gems at Gem Select, I have never been disappointed. I design a ring for myself, it is easier to buy the gems I want and take them to a jeweler. I am sure I will order gems again.

Posted By Sunny in December, 2022

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Awesome

Posted By Mic in May, 2023

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Overall Rating -> 7

I ordered tsavorite garnet. It wasn’t quite as vidid color as I was expecting. Still a nice stone

Posted By Babs in October, 2022

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Overall Rating -> 10

This business makes it easy to research and find all pertinent information about the individual gemstones and other information such as the recommend use (ring or pendent for example). Also it's important to know about things like hardness and durability of the gemstones. I also appreciate the history of purchases and transaction details. Just be sure to register on the website to get the best experience.

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My first order. I am anxious to see if what I ordered is what I receive.

Posted By KRJ in July, 2023

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Overall Rating -> 10

Bought my first set of gemstones of gemselect to start off my collection. Everything is what it says it is, 100% legit. They even send u a pamphlet for every gem you order even the $1 ones lol. Good store.

Posted By SuperBee in March, 2023

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Overall Rating -> 10

I recently bought some stones for Christmas gifts for my family from GemSelect and was thrilled at the speed they arrived to me. The descriptions were accurate and could be verified by myself upon receiving the stones, though the only issue i had was finding exact stones i wanted. The sorting system is fanastically detailed, but often seems to trim more results than expected when i was selecting things to look by. They arrived safely and all together, as described per my purchase order and i could not be more satisfied. There aren't many that are looking to buy loose stones like this, but it really gets the job done.

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I particularly like information about product provided with purchase.

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Overall Rating -> 9

Overall good, shipping prices just seem a little on the high side.

Posted By Steve in August, 2023

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Overall Rating -> 9

Not easy enough to buy by exact size, and many stones aren't carbechon curved shape on top

Posted By Erick in July, 2023

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Overall Rating -> 10

I loved my gem stones and i will order again and I would refer friends and family to purchase her in the future

Posted By Tina in October, 2022

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Selected Gemstones

Gemstones A-Z

Buy Opal Cabochons Gems

1.68 ct Oval Opal, 8.9 x 6.9 mm From Ethiopia

18.75 ct Green Opal, 21.8 x 17.5 mm Oval Cut From Brazil

33.02 ct White Opal, 30 x 21.2 mm Pear Cut From Australia

15.79 ct Oval Fire Opal, 22.3 x 14.9 mm From Mexico

1.45 ct Fancy Opal, 10.7 x 6.8 mm From Ethiopia

13 ct Pear Opal, 19.4 x 13.6 mm From Brazil

0.43 ct Pear Opal, 7.1 x 6.5 mm From Ethiopia

5.29 ct Fancy Boulder Opal, 17.4 x 12.2 mm From Australia

6.1 ct Pear Boulder Opal, 19.2 x 11.8 mm From Australia

8.01 ct Cushion Boulder Opal, 15.6 x 8.8 mm From Australia

12.73 ct Trillion Boulder Opal, 16.6 x 15.7 mm From Australia

1.28 ct Oval Opal, 9 x 7.1 mm From Ethiopia

2.53 ct Oval Black Opal, 9.1 x 7.1 mm From Ethiopia

12.97 ct Fancy Boulder Opal, 19.6 x 15.8 mm From Australia

22.67 ct Oval Boulder Opal, 21.8 x 16.5 mm From Australia

17.55 ct Fancy Boulder Opal, 19.4 x 13.3 mm From Australia

19.27 ct Cushion Boulder Opal, 18.8 x 15.3 mm From Australia

0.93 ct Oval Opal, 7.1 x 5.1 mm From Ethiopia

2.02 ct Oval Opal, 8.1 x 6.1 mm From Ethiopia

3.01 ct Round Opal, 6.3 mm From Ethiopia

22.35 ct Fancy Boulder Opal, 25.9 x 22 mm From Australia

4.38 ct Trillion Opal, 12.5 x 12.3 mm From Ethiopia

1.3 ct Fancy Opal, 11.4 x 7.3 mm From Ethiopia

2.03 ct Orange Opal, 8 x 6.1 mm Oval Cut From Ethiopia

1.97 ct Marquise Opal Doublet, 14.8 x 6.9 mm From Australia

11 ct Fancy Boulder Opal, 22.3 x 11.5 mm From Australia

1.07 ct Oval Opal, 7.1 x 5.1 mm From Ethiopia

1.86 ct Oval Opal, 9.8 x 8 mm From Ethiopia

2.38 ct Oval Black Opal, 9.2 x 7.2 mm From Ethiopia

24.39 ct Green Opal, 19.2 x 17.8 mm Oval Cut From Brazil

10.52 ct Pear Boulder Opal, 20 x 14.9 mm From Australia

21.61 ct Oval Opal, 7 x 17.3 mm From Australia

Opal Cabochons

Gemstone Information