Mineral Specimens with Opal

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OPALcab-31 - OPAL - $ 3620
Welo, Afar Province, Ethiopia
thumbnail, 2.3 x 1.4 x 0.9 cm

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12.94 carats. $280/carat, superb polish. Cut by Spectrum-Award winning faceter, Mark Kaufman.

OPALcab-32 - OPAL - $ 2300
Welo, Afar Province, Ethiopia
thumbnail, 2.0 x 1.5 x 0.9 cm

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10.22 carats. $225/carat, superb polish. Cut by Spectrum-Award winning faceter, Mark Kaufman.

OPALcab-33 - OPAL - $ 4880
Welo, Afar Province, Ethiopia
thumbnail, 2.3 x 1.4 x 0.8 cm

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12.23 carats. $400/carat, superb polish. Cut by Spectrum-Award winning faceter, Mark Kaufman.

OPALcab-34 - OPAL - $ 3190
Welo, Afar Province, Ethiopia
thumbnail, 1.8 x 1.6 x 0.9 cm

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11.41 carats. $280/carat, superb polish. Cut by Spectrum-Award winning faceter, Mark Kaufman.

OPALcab-35 - OPAL - $ 2700
Welo, Afar Province, Ethiopia
thumbnail, 2.3 x 1.7 x 0.6 cm

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12.00 carats. $225/carat, superb polish. Cut by Spectrum-Award winning faceter, Mark Kaufman.

PAS-100 - Opal var. Geyserite - SOLD
Yellowstone National Park, Park Co., Wyoming, USA
miniature, 3.7 x 2.8 x 1.9 cm

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ex. Philadelphia Academy of Natural Sciences

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Opal var. Geyserite from Yellowstone National Park, Park Co., Wyoming, USA [db_pics/pics/pas-100a.jpg]

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Opal var. Geyserite from Yellowstone National Park, Park Co., Wyoming, USA [db_pics/pics/pas-100b.jpg]

So-called "geyserite" is a variety of opal formed in fumarole deposits. Apparently these were collected by a Dr. Leidy in 1877 on a trip, and brought back to give to the Academy for its collections. Half a dozen samples were here, all with the same number handpainted on the backsides, denoting common origin. This piece comes with a copy of the original label. NOTE: Collecting in the park is prohibited today.

PAS-99 - Opal var. Geyserite - SOLD
Yellowstone National Park, Park Co., Wyoming, USA
miniature, 4.7 x 4.2 x 1.6 cm

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ex. Philadelphia Academy of Natural Sciences

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So-called "geyserite" is a variety of opal formed in fumarole deposits. Apparently these were collected by a Dr. Leidy in 1877 on a trip, and brought back to give to the Academy for its collections. Half a dozen samples were here, all with the same number handpainted on the backsides, denoting common origin. This piece comes with the original label. NOTE: Collecting in the park is prohibited today.

RLKG10-129 - Fire Opal / Jelly Opal (rare green color) - $ 1250
near Niquelandia, Goias, Brazil
thumbnail, 14.6 mm ; 10.55 carats

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ex. Richard Gaines


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A rare and unique color and occurrence for Opal unlike anything I have seen from Brazil, or virtually any other world locality. This stone was cut from a single piece of rough that was collected circa 50 years ago and was once part of the famous Richard (Dick) Gaines collection and we were fortunate enough to have a photo of the original piece of rough with Gaines' collection label. Green Opal is certainly rare, and to find vibrantly colored stones like this one is unheard of on the market. This Cut Corner Square cut stone is the largest gem I have seen of this material, and would make a superb addition to any collection, especially an Opal suite, as a stone like this is next to impossible to find even in old collections. Please note that the color of the stone is a bit more green than the photos might indicate, as they show somewhat of a yellow hue.

RLKG10-130 - Fire Opal / Jelly Opal (rare green color) - $ 475
near Niquelandia, Goias, Brazil
thumbnail, 11.5 x 8.2 mm ; 2.33 carats

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ex. Richard Gaines


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A rare and unique color and occurrence for Opal unlike anything I have seen from Brazil, or virtually any other world locality. This stone was cut from a single piece of rough that was collected circa 50 years ago and was once part of the famous Richard (Dick) Gaines collection. We were fortunate enough to have a photo of the original piece of rough with Gaines' collection label. Green Opal is certainly rare, and to find vibrantly colored stones like this one is unheard of on the market. This Oval cut stone is one of the larger gems that I have seen of this material, and would make a superb addition to any collection, especially an Opal suite, as a stone like this is next to impossible to find even in old collections. Please note that the color of the stone is a bit more green than the photos might indicate, as they show somewhat of a yellow hue.

RLKG10-131 - Fire Opal / Jelly Opal (rare green color) - $ 275
near Niquelandia, Goias, Brazil
thumbnail, 10.8 x 6.8 mm ; 1.39 carats

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ex. Richard Gaines


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A rare and unique color and occurrence for Opal unlike anything I have seen from Brazil, or virtually any other world locality. This stone was cut from a single piece of rough that was collected circa 50 years ago and was once part of the famous Richard (Dick) Gaines collection. We were fortunate enough to have a photo of the original piece of rough with Gaines' collection label. Green Opal is certainly rare, and to find vibrantly colored stones like this one is unheard of on the market. This Pear cut stone is one of the larger gems that I have seen of this material, and would make a superb addition to any collection, especially an Opal suite, as a stone like this is next to impossible to find even in old collections. Please note that the color of the stone is a bit more green than the photos might indicate, as they show somewhat of a yellow hue.

RLKG10-132 - Fire Opal / Jelly Opal (rare green color) - $ 200
near Niquelandia, Goias, Brazil
thumbnail, 7.5 mm ; 1.25 carats

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ex. Richard Gaines


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A rare and unique color and occurrence for Opal unlike anything I have seen from Brazil, or virtually any other world locality. This stone was cut from a single piece of rough that was collected circa 50 years ago and was once part of the famous Richard (Dick) Gaines collection. We were fortunate enough to have a photo of the original piece of rough with Gaines' collection label. Green Opal is certainly rare, and to find vibrantly colored stones like this one is unheard of on the market. This Pear cut stone is one of the few gems that I have seen of this material, and would make a superb addition to any collection, especially an Opal suite, as a stone like this is next to impossible to find even in old collections. Please note that the color of the stone is a bit more green than the photos might indicate, as they show somewhat of a yellow hue.

RLKG10-133 - Fire Opal / Jelly Opal (rare green color) - $ 125
near Niquelandia, Goias, Brazil
thumbnail, 6.8 mm ; 0.73 carats

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ex. Richard Gaines


	CLICK HERE FOR LARGER IMAGE:

A rare and unique color and occurrence for Opal unlike anything I have seen from Brazil, or virtually any other world locality. This stone was cut from a single piece of rough that was collected circa 50 years ago and was once part of the famous Richard (Dick) Gaines collection. We were fortunate enough to have a photo of the original piece of rough with Gaines' collection label. Green Opal is certainly rare, and to find vibrantly colored stones like this one is unheard of on the market. This Round cut stone is one of the few gems that I have seen of this material, and would make a superb addition to any collection, especially an Opal suite, as a stone like this is next to impossible to find even in old collections. Please note that the color of the stone is a bit more green than the photos might indicate, as they show somewhat of a yellow hue.

RLKG10-157 - Fire Opal (with Contra Luz color flash) - $ 225
Mexico
thumbnail, 11.1 x 10.1 mm ; 3.40 carats

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Some of the most well known Fire Opal in the world is from Mexico. These stones are among some of the biggest, brightest and most intense color Fire Opals from North America. There has been a surge in the price of fine quality Fire Opal from Mexico in the last few years, as the material seems to be more and more difficult to obtain, especially in such vivid stones like this one. This "Oval Cabochon" cut gem has a golden color, but the most impressive aspect of the stone is the fact that it shows the highly desirable and seldom seen COLOR FLASH or "Contra Luz" effect which is the multicolor "rainbow"-like array that is seen when strong light is transmitted through the stone. Now the color flash is best seen in sunlight or with a strong flashlight against a black background, and this stone was photographed under a strong flashlight to show the color flash. When strongly lit, the stone shows flashes of blue, green, red and gold. These flashes of color are only seen in about 1% of all Mexican Fire Opals ! It's a very attractive stone, and would make a great piece of jewelry, or would stand on its own as a beautiful gem.

RLKG10-183 - Fire Opal - $ 270
Mexico
thumbnail, 12.4 x 9.8 ; 2.71 carats

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