GIA 18ct Natural Untreated Black Opal Cabochon Loose Unset Fine Gemstone

Title: 6.85Cts Huge! Natural Multi color Black Opal Pear Cabochon loose gemstone Carat Weights: 6.85 Size/Dimensions: 17.00x12.00x7.00 MM Additional Information: EHIOPIA NATURAL HEATED Reserve: $60.00

Title: 2.45Cts Natural Multi color Black Opal Marquise Cabochon loose gemstone NL103 Brand: MRS GEMS Carat Weights: 2.45 Size/Dimensions: 17.30x7.20x3.60 MM Reserve: $20.00 Shipping: Domestic: Flat-ra

Title: 3.25Cts Natural Multi color Black Opal Oval Cabochon Good Luster loose gemstone Carat Weights: 3.25 Size/Dimensions: 12.30x9.00x6.00 MM Additional Information: ETHIOPIA HEATED WITH PLAY OF COLO

4.55Cts Natural Multi color Black Opal Pear Cabochon Good Luster loose gemstone Reserve: $50.00 Shipping: Domestic: Flat-rate of $10.00 to anywhere within the contiguous U.S. International: Foreign sh

Title: 5.45Cts Natural Multi color Black Opal Pear Cabochon Good Luster loose gemstone Carat Weights: 5.45 Size/Dimensions: 17.10x10.50x6.30 MM Additional Information: VVS QUALITY HEATED WITH PLAY OF

Title: 3.30Cts Natural Multi color Black Opal Oval Cabochon Good Luster loose gemstone Carat Weights: 3.3 Size/Dimensions: 12.50x9.00x5.70 MM Additional Information: HEATED Reserve: $40.00 Shipping: D

Title: 3.35Cts Natural Multi color Black Opal Oval Cabochon Good Luster loose gemstone Carat Weights: 3.35 Size/Dimensions: 12.80x8.50x6.30 MM Additional Information: VVS QUALITY HEATED WITH PLAY OF C

Title: 1.60Cts Natural Multi color Black Opal Oval Cabochon Good Luster loose gemstone Carat Weights: 1.6 Size/Dimensions: 9.20x7.40x4.70 MM Additional Information: VVS QUALITY HEATED WITH PLAY OF COL

Title: 1.40Cts Natural Multi color Black Opal Oval Cabochon Good Luster loose gemstone Carat Weights: 1.4 Size/Dimensions: 9.10x6.90x4.40 MM Additional Information: ETHIOPIAN - HEATED WITH PLAY OF COL

Title: 2.05Cts Natural Multi color Black Opal Oval Cabochon Good Luster loose gemstone Carat Weights: 2.05 Size/Dimensions: 12.10x7.70x4.20 MM Additional Information: HEATED WITH PLAY OF COLOR Reserve

Title: 2.10Cts Natural Multi color Black Opal Oval Cabochon Good Luster loose gemstone Carat Weights: 2.1 Size/Dimensions: 12.20x7.30x4.70 MM Additional Information: HEATED WITH PLAY OF COLOR Reserve:

Title: 2.05Cts Natural Multi color Ethiopia Black Opal Oval Cabochon Good Luster loose gemstone Brand: MRS GEMS Carat Weights: 2.05 Size/Dimensions: 11.20x8.10x4.50 MM Additional Information: HEATED P

LOOSE NATURAL UNTREATED OVAL CABOCHON BLACK OPALOpal measures 8.4x7.1x4.3mmNatural untreated African Black Opal1.25ctAll pictures are taken without any artificial light, only natural daylight, so you

LOOSE NATURAL UNTREATED OVAL CABOCHON BLACK OPALOpal measures apx 8.5x6.2mmNatural untreated African Black Opal0.85ctAll pictures are taken without any artificial light, only natural daylight, so you

2.53ct NATURAL BLACK OPAL Natural Untreated semi-black opal Australian opal 2.53ct Measures 15mm x 8.3mm x 2.9mm Beautiful green purple flashing colors, nicer in person, camera doesn't pick up the bea

Sale is for 1 loose cabochon opal Opal measures 12mm x 9.65mm Please review pictures for condition, has small black inclusion Beautiful green and red colors 1.97ct

Title:GIA 4.90ct Natural Blue Sapphire No Heat Loose Unset Gemstone Cushion Cut w/ Report Description:It comes with a GIA report to verify the sapphire info, as shown (#5234038848). Some inclusions ar

Item: Fine 6.33ct Natural, no heat, no radiation, Rubellite | GIA Cert. Loose Gemstone: Natural untreated Rubellite Carat Weight: 6.33 Length 13.60 x Width 9.60 x Height 6.60 mm Natural, untreated, no

Item: Natural purplish-black Star Spinel | cabochon oval cut Loose Gemstone: Natural Spinel, untreated Carat Weight: 2.64 Size: L7.77mm x W7.33mm x 5.16mm Translucent, comes with GIA Gem Brief Please

GIA 1.29ct No Heat Natural Blue Sapphire 6.46 X 5.97mm Cushion Cut Loose Unset Gemstone w/ Report Description:Very rare & collectible, the GIA has determined it to be NOT HEATED! The cushion stone is

Title: 1.95 CTS MARVELOUS LUSTER ! NATURAL ETHIOPIAN BLACK OPAL TRILLION LOOSE GEMSTONES Carat Weights: 1.95 Size/Dimensions: 11.1 x 11.7 x 3.1 MM Reserve: $20.00 Shipping: Domestic: Flat-rate of $10.

Title: 1.20 CTS NATURAL BLACK OPAL OVAL SHAPE LOOSE GEMSTONES Carat Weights: 1.2 Size/Dimensions: 10.4 x 6.8 x 5.1 MM Additional Information: CLARITY VVS-HEATED WITH PLAY OF COLOR - ETHIOPIA Reserve:

Title: 4.00 Ct EXCELLENT LUSTER Natural Black Opal Trillion shape loose gemstone Carat Weights: 4 Size/Dimensions: 12.80x12.40x5.90 MM Reserve: $40.00 Shipping: Domestic: Flat-rate of $10.00 to anywhe

Title: 3.20 CTS GOOD LUSTER ! NATURAL ETHIOPIAN BLACK OPAL CUSHION LOOSE GEMSTONES Carat Weights: 3.2 Size/Dimensions: 12.8 x 8.0 x 5.2 MM Additional Information: HEATED Reserve: $35.00 Shipping: Dome