Ethiopia A large oval cabochon opal having a rich caramel brown body color, with an intense, firey...
By Peter Eccles Australian goldsmith, Peter Eccles, utilized a natural Australian gold nugget with...
By Peter Eccles Australian goldsmith, Peter Eccles, utilized a natural Australian gold nugget with...
An antique box, formed of slabs of polished goldstone glass, bordered in gilt-washed fittings...
Ligthning Ridge, New South Wales, Australia Swirls of vivid green, blue, black, orange, pink appear...
Lightning Ridge, New South Wales, Australia An oval cabochon of suitable size for mounting as a...
Lightning Ridge, New South Wales, Australia An oval cabochon of solid crystal opal with a...
Lightning Ridge, New South Wales, Australia A large oval cabochon black crystal opal having full...
Lightning Ridge, New South Wales, Australia Featuring a stunning oval black opal cabochon, weighing...
Lightning Ridge, New South Wales, Australia Featuring an rectangular cabochon black opal, which...
Lightning Ridge, New South Wales, Australia Featuring an oval cabochon black opal with a broad flash...
Lightning Ridge, New South Wales, Australia An oval cabochon of classic color and proportions...
Lightning Ridge, New South Wales, Australia An oval cabochon black opal with multi-color...
Lightning Ridge, New South Wales, Australia An oval cabochon black opal having predominantly red...
Virgin Valley, Humboldt County, Nevada The present specimen has very fine black body color and vivid...
Andes Mountains, Peru Comprising 53 hexagonal opal beads of sea foam blue color, with excellent...
Burma Of oval lenticular form, this fine double-sided cabochon of rich, medium blue color with a...
Formed of flat polished panels of fine quality Queensland, Australia boulder opal, book-matched to...
Koroit, Queensland, Australia Having a contour polished face with a manganese-rich, brown ironstone...
Korioit, Australia A tear-drop shaped cabochon of rich, brown ironstone having excellent minute...
Koroit, Queensland, Australia Set with seven cabochon boulder opals, of either oval, triangular or...
Queensland, Australia Idar-Oberstein, Germany Retailed by H. Stern Carved from a single piece of...
Consisting of polished panels of Queensland, Australia boulder opal, intricately inlaid to create a...
Quilpie, Queensland, Australia Thick seams of iridescent opal in blue, green and orange are seen in...
Queensland, Australia A rectangular plaque with contour polished face which reveals multi-color...
Queensland, Australia The face of this attractive specimen is almost entirely covered by a thick...
Queensland, Australia Made by an Australian artist, this unique waterfall feature incorporates...
Serro Do Caldeirao, Pontes e Lacerda, Mato Grosso, Brazil Mining in the greater Mato Grosso region...
Queensland, Australia A vivid blue layer of opal, known in the mineral hobby as a "pipe", with...
S. Fork Stanislaus River, Columbia Mining District, Tuolumne Co., California A fine specimen...
16 to 1 Mine, Alleghany Mining District, Sierra County, California An arborescent specimen of "tree...
Eagle's Nest, Michigan Bluff, Placer County, California An exquisite miniature specimen with...
Colorado Quartz Mine, Mariposa County, California Minute crystallization of exquisite form...
Colorado Quartz Mine, Mariposa County, California A classic example with unbelievable luster, the...
Harvard Mine, Jamestown Mining District, Tuolumne Co., California Comprising bright, lustrous gold...
Placer County, California A classic river tumbled nugget with excellent three-dimensional form...
A beautiful water-worn nugget having traces of quartz and oxides in the crevices. Weighing...
An alluvial nugget of great character with a naturally pierced hole and minor oxides in the...
Harvard Mine, Jamestown Mining District, Tuolumne County, California An exquisite thumbnail specimen...
By Paul Dreher Idar-Oberstein, Germany Retailed by Asprey, London, England circa 1990 Carved from a...
By Christine Roussel A crystal opal with some transparency having extensive bluish-green fire...
Idar-Oberstein, Germany, Retailed by Asprey and Co An impressive depiction of a bird of large size...
Idar-Oberstein, Germany Circa 1980 Retailed by Vacheron Constantin, Geneva, Switzerland Carved from...
Brazil An oval cabochon cat's eye aquamarine having a well-saturated sea blue color and good luster...
Burma Danburite is a silicate mineral found scattered throughout the planet in unassuming colors...
Ural Mountains, Russia The phenomenon of chatoyancy is rarely seen in the mineral nephrite. The...
Arusha, Tanzania A large, deep cabochon which displays not only very fine, rich violet hue but also...
Lightning Ridge, New South Wales, Australia Vivid and truly "present" color in opal is rarely seen...
Lightning Ridge, New South Wales, Australia An oval cabochon having a semi-black black body color...
Lightning Ridge, New South Wales, Australia A classic, true black "nobby" opal (i.e. an opal...
Lighting Ridge, New South Wales, Australia An oval cabochon of solid opal, with virtually no potch...
Lightning Ridge, New South Wales, Australia This is a Lightning Ridge classic: an opal cabochon...
Central Victoria, Australia With individual weights as follows: 16.70 gm; 16.53 gm; 15.76 gm; 14.51...
near Whitehorse, Yukon Territory, Canada These gold nuggets from Northern Canada are stunning butter...
Ethiopia An attractive pear-shaped cabochon with cream-white body color having predominantly red...
Ethiopia A substantial triangular cabochon, suitable for mounting either as a ring or pendant...
Ethiopia A large oval cabochon of white crystal opal having excellent polish and a vivid green and...
Set with a triangular cabochon crystal opal from Ethiopia, weighing approximately 10.56 carats and...
Centering on a circular cabochon Ethiopian opal, weighing approximately 10.81 carats, surrounded by...
Lightning Ridge, New South Wales, Australia An oval cabochon which is suitable for mounting as ring...
Motherlode, Mariposa County, California A beautiful thumbmail specimen featuring an arborescent...
Colorado Quartz Mine, Mariposa County, California This fine, highly crystallized gold specimen is...
300 million years old Diamantina, Minas Gerais, Brazil Millions of years ago there was a...
By Master Carver Daniela L'Abbate Lightning Ridge, New South Wales, Australia The free-form opal...
Welo, Ethiopia An oval cabochon displaying a deep, rich brown body color, with vivid flashes of...
Queensland, Australia A large rectangular boulder opal entirely covered with gem opal having broad...
Aqua Calientes, Sonora, Mexico The world's only known fire agate deposits fall within two general...
Ethiopia Faceted opals are considered unusual. The present oval-cut crystal opal has a light cream...
Lightning Ridge, New South Wales, Australia A fine drop-shaped crystal opal, suitable for mounting...
Burma A large oval cabochon moonstone of fine quality and transparency having the optical phenomena...
Mintabie, Australia A well-formed, pleasing oval cabochon having extensive red fire with flashes of...
Burma Truly a stone for the serious collector, such large feldspar gems are no longer being exported...
Mexico An oval cabochon with a high dome, well-saturated medium tangerine body color and a vibrant...
An unusual collection of four dendritic (or "moss" opals) including a blue opal, Peru, weighing...
Coober Pedy, South Australia A group of four oval cabochon white crystal opals, each with good...
Lightning Ridge, New South Wales, Australia Suitable for mounting as a pendant, this large...
Quilpie, Queensland, Australia A beautiful split of a boulder opal nodule, both halves showing a...
California A hefty nugget with great three-dimensionality, having minor traces of white quartz in...
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