Explore Crystals Minerals, Rough Opal, and more!

This 67.81-carat carved opal from Brazil looks to be glowing from within.  #GIABirtstones (1/21/13)

This carved Opal from Brazil looks to be glowing from within.

Valued for its shifting play of color, opal’s rainbow hues offer the colors of all the other gems combined.

Opal, October’s birthstone, is a captivating gemstone because of its unique optical characteristics. Learn more about opals with GIA.

Google Image Result for http://www.opalmine.com/wp-content/uploads/2011/05/2013-7r.jpg

opal unset, single huge crystal opal from the Coober Pedy mine, Australia . This is a special collectors item.

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Gemstones & Minerals - October birthstone: Opal or Tourmaline - Colorado Gambler

Rough boulder opal on sandstone host rock. The 3.47-carat boulder opal tablet was cut from a similar piece of rough.

Carat boulder opal tablet - "Opal is known for its unique display of flashing rainbow colours called play-of-colour. There are two broad classes of opal: precious and common. Precious opal displays play-of-colour, common opal does not.

Opal  Ethiopia Miniature, 4.1 x 2.2 x 1.7 cm This fine Ethiopian opal measures in at 88 carats

This fine Ethiopian opal measures in at 88 carats, a lucky number in the Chinese culture. It is very difficult to find clean rough in this size from the Ethiopian deposits, and this stone would be expensive simply for its quality and size in any case.

Jewellery - unique designs with prices to suit all pockets ...

Jewellery - unique designs with prices to suit all pockets .

Science and Natural History | Brilliant 88 Carat Opal Gem - The Curator's Eye

This fine Ethiopian opal measures 88 carats lucky number Chinese

This exceptionally large 1.43 kg block of opal, which measures 12.8 × 10.1 × 5.8 cm, is rare not only for its size but also its oolitic texture. Photo by C. D. Mengason/GIA, courtesy of Tibor Shelley/Opals by GMT. GIA (051414)

pinfire: “ This exceptionally large kg block of opal, which measures × × cm, is rare not only for its size but also its oolitic texture. Mengason/GIA, courtesy of Tibor Shelley/Opals by GMT.

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Vintage watermelon tourmaline gemstone slice cut in Bangkok in from gem rough that Joel acquired in Brazil on a buying trip It is a classic typical section of a zoned

Raw opal                                                                                                                                                                                 More

19 Incredibly Rare Opal Gemstones

Largest Freeform Black Opal In The World Radiant with a rainbow of color and very close to twelve inches along the bottom, the huge carving weights Kg or carats, making it the largest free form black opal in the world.

Opal from Ethiopia

Crystal Fire Opal) from 570 km north of Addis Ababa, Wello (Wollo), Delanta Plateau, Tigray, Ethiopia Online Mineral Museum Photographic Archive

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