Round Opal Gemstones: Cabochons and Faceted Stones in Many Colors ...

Selected Gemstones

Gemstones A-Z

Actinolite Cat's Eye 58 Agate 807 Agate Geode 19 Almandine Garnet 35 Amazonite 212 Amethyst 3,144 Amethyst Geode Slice 80 Ametrine 206 Ammolite 452 Andalusite 204 Andesine Labradorite 149 Apatite 562 Aquamarine 84 Aventurine 129 Azotic Topaz 13 Azurite 20 Black Opal 327 Bloodstone 256 Boulder Opal 216 Carnelian 91 Cat's Eye Apatite 39 Cat's Eye Aquamarine 18 Cat's Eye Gemstones 1,110 Cat's Eye Moonstone 67 Cat's Eye Opal 168 Cat's Eye Scapolite 97 Chalcedony 124 Charoite 166 Chocolate Opal 75 Chrome Diopside 1 Chrysoberyl 100 Chrysoberyl Cat's Eye 177 Chrysocolla 63 Chrysoprase 33 Citrine 4,260 Color Change Gemstones 831 Color-Change Diaspore 713 Color-Change Fluorite 59 Color-Change Garnet 59 Coral 293 Demantoid Garnet 248 Dendritic Agate 246 Diamond 698 Druzy Amethyst 5 Druzy Azurite 20 Druzy Citrine 51 Druzy Variscite 132 Emerald 880 Enstatite 5 Fire Agate 338 Fire Opal 168 Fluorite 205 Fossil Coral 330 Garnet 5,850 Golden Beryl 182 Grandidierite 186 Grossularite Garnet 50 Hematite 372 Hemimorphite 46 Hemimorphite Druzy 46 Hessonite Garnet 2,250 Hiddenite 17 Howlite 142 Idocrase 27 Imperial Topaz 12 Iolite 170 Jadeite 319 Jasper 1,362 Kornerupine 243 Kunzite 438 Kyanite 719 Labradorite 695 Lapis Lazuli 339 Larimar 153 Lepidolite 49 Malachite 243 Malaya Garnet 149 Mali Garnet 12 Maw-Sit-Sit 132 Moonstone 974 Morganite 910 Moss Agate 69 Mother Of Pearl 102 Mystic Quartz 420 Mystic Topaz 28 Nuummite 121 Obsidian 247 Onyx 288 Opal 1,211 Opal Doublet 5 Opal In Matrix 20 Peanut Wood 15 Pearl 19 Peridot 1,401 Pietersite 655 Prehnite 837 Psilomelane Dendrite 25 Pyrite 16 Pyrope Garnet 1,849 Quartz 1,320 Quartz Cat's Eye 85 Quartz With Hedenbergite 9 Quartz With Marcasite 190 Rainbow Moonstone 624 Rainbow Pyrite 183 Rhodochrosite 157 Rhodolite Garnet 457 Rhodonite 38 Rose Quartz 747 Rubellite Tourmaline 12 Ruby 1,265 Ruby In Fuchsite 93 Ruby-Zoisite 220 Rutile Quartz 540 Sapphire 5,100 Scapolite 97 Scolecite 34 Seraphinite 50 Serpentine 80 Sillimanite 73 Sillimanite Cat's Eye 401 Smithsonite 1 Smoky Quartz 1,065 Snowflake Obsidian 35 Sodalite 34 Spectrolite 147 Spessartite Garnet 380 Sphalerite 359 Sphene 505 Spinel 959 Star Diopside 7 Star Garnet 50 Star Gemstones 843 Star Moonstone 98 Star Rose Quartz 18 Star Ruby 257 Star Sapphire 410 Star Sunstone 3 Strawberry Quartz 951 Sunstone 529 Tanzanite 836 Tiger's Eye 861 Tiger's Eye Matrix 166 Topaz 4,624 Tourmaline 2,437 Tsavorite Garnet 251 Turquoise 94 Uvarovite Garnet Drusy 60 Variscite 8 Zircon 2,062

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Multicolor Round Opal Gems

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4.55 ct Round Black Opal, 12.1 mm From Ethiopia

Natural Black Opal, Qty: 1 pc | 4.55 carat weight Black Opal

4.55ct1 Piece

$ 136.50

12.1 mm

Item Description
Stone Type:	Loose Black Opal
Black Opal Weight:	4.55 ct Black Opal
Black Opal Shape:	Round Cabochon Black Opal
Black Opal Size:	12.1 mm Black Opal
Black Opal Color:	Multicolor Black Opal
Black Opal Clarity:	Opaque Black Opal
Black Opal Origin:	Ethiopia Black Opal
Black Opal Treatment:	Smoked
Black Opal Quantity:	1
Black Opal Certificate:	GemSelect
Product Description:

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9.18 ct Round Black Opal, 15 mm From Ethiopia

Natural Black Opal, Qty: 1 pc | 9.18 carat weight Black Opal

9.18ct1 Piece

$ 275.40

15 mm

Item Description
Stone Type:	Loose Black Opal
Black Opal Weight:	9.18 ct Black Opal
Black Opal Shape:	Round Cabochon Black Opal
Black Opal Size:	15 mm Black Opal
Black Opal Color:	Multicolor Black Opal
Black Opal Clarity:	Translucent Black Opal
Black Opal Origin:	Ethiopia Black Opal
Black Opal Treatment:	Smoked
Black Opal Quantity:	1
Black Opal Certificate:	GemSelect
Product Description:

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6.38 ct Round Black Opal, 8.2 mm From Ethiopia

Natural Black Opal, Qty: 4 pcs | 6.38 carat weight Black Opal

6.38ct (total)4 Pieces

$ 146.88

8.2 mm

Item Description
Stone Type:	Loose Black Opal
Black Opal Weight:	1.60 ct Black Opal
Black Opal Shape:	Round Cabochon Black Opal
Black Opal Size:	8.2 mm Black Opal
Black Opal Color:	Multicolor Black Opal
Black Opal Clarity:	Translucent Black Opal
Black Opal Origin:	Ethiopia Black Opal
Black Opal Treatment:	Smoked
Black Opal Quantity:	4
Black Opal Certificate:	GemSelect
Product Description:

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This Page in Other Languages

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.

Round opal gemstones are available in singles, matched pairs and gem lots. Round opal gems fit various jewelry designs, whether they are used as center stones or accent stones. Choose from various round opal stones in calibrated sizes, including black opal, boulder opal, chocolate opal and opal doublets. Use the search filters at the top of the page to find the perfect round opal gems by size, carat weight, price or origin. The tick boxes will direct you to singles, pairs, lots, faceted gems or cabs.

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Gemstone Information

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Selected Gemstones

Gemstones A-Z

Buy Round Opal Gems

4.55 ct Round Black Opal, 12.1 mm From Ethiopia

Natural Black Opal, Qty: 1 pc | 4.55 carat weight Black Opal

9.18 ct Round Black Opal, 15 mm From Ethiopia

Natural Black Opal, Qty: 1 pc | 9.18 carat weight Black Opal

6.38 ct Round Black Opal, 8.2 mm From Ethiopia

Natural Black Opal, Qty: 4 pcs | 6.38 carat weight Black Opal

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

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