26 Carat Radiant Cut Alexandrite Gemstone: Rare Color Changing Bi-Color Stone

Blue Green Tourmaline | 10x10 mm | Bi-Colour Gemstone | Tourmaline For Fine Jewellery | October Birthstone

12mm Bi Color Tourmaline Faceted Cushion Cut Stone - Price Per Piece

10x14mm Bi Color Tourmaline Faceted Cushion Cut Stone - Price Per Piece

Bi-Color Ametrine Pear Gemstone (6.30-10.25 Ct) - Natural Faceted Stone

Natural 1.8 Ctw Good Quality Bi Color Tourmaline 8x9.5mm Pear Faceted AAA Quality - Good Quality Bi-Color Tourmaline

Bi-Color Tourmaline Gemstone: 0.90 Ct Octagon Cut Blue-Pink Stone

Bi-Color Tourmaline Baguette Cut Gemstone: 1.45 Carat, 5x10mm Loose Stone

Huge Bi Color Fluorite Gemstone - Loose Faceted Fluorspar 19.20 CTS - Emerald Shape 15 X 12 mm - Natural AAA Fluorescent Stone

50 Carat Bi-Color Ametrine Gemstone: Round Cut Bolivian Collector Stone

Bi-Color Tourmaline Gemstone: 0.90 Carat Trillion Cut, 6x6x4 mm

Bi-Color Tourmaline Baguette Cut Gemstone: 0.80 Carat Loose Stone

Rare Bi-Color Tanzanite 1.01Ct | Natural Oval Gem | Sparkling Light Blue Tanzanite Loose Stone

Pear Cut Bi-Color Tourmaline Gemstone: 8x5mm Faceted Loose Stone

10x14mm Bi Color Tourmaline Pear Cut Stone - Price Per Piece

AAA 15mm Bi Color Ametrine Cushion Shape Cut Stone Fancy Flower Cut Natural Ametrine Gemstone Ametrine Loose Concave Cut Stone

4.70 Carat Bi-Color Tourmaline Faceted Square Octagon Step Cut Stone Natural Loose Gemstone | Tourmaline For Jewelry Making | 9x9.5x6 mm

3.42 Carats Bi Color Tourmaline Stone Emerald Cut African Gemstone

Flawless Natural Spinel, 5x4mm Oval Shape Purple & Pink Spinal Gemstone, Loose Bi Color Stone For Ring

Bi Colour Tourmaline Faceted 4.50 Ct - Ring Stone Highlight

13.70 Carat Bi-Color Tourmaline Fancy Cut Stone Faceted Natural Loose Gemstone From Nigeria | Tourmaline For Jewelry Making | 40x12x4 mm

Natural Bi Color Fluorite Crystal 92G Healing Stone Mineral Specimen From Afghanistan

SOLD 2.01 Carat Heart Cut Bi-Color Sapphire: Blue, Yellow, Green Loose Stone

23CT Emerald Cut Stone Sapphire Loose Gemstone Certified Sapphire Bi Color Faceted Sapphire Natural Sapphire Best Quality In Best Offer Ever

Natural Bi Color Blue+Yellow Sapphire Pear Shape Faceted Cut Stone 9.3mm×6.3mm Size Exclusive Rare Sapphire

Bi-Color Watermelon Tourmaline Gemstone: Faceted Jewelry Stone, 1.25 Ct

13.85 Ct Natural Bi-Color Parti Sapphire Emerald Cut Loose Gemstone GIT Certified 11X13 MM-AAA+ Top Quality Gem-Ring & Jewelry Making Gems

2.00 CT's Cushion Shape Bi Color Tourmaline | Bi Color Tourmaline Ring | October Birthstone

18.10 Ct Flawless Ceylon Purple Pink Bi-Color Sapphire Cushion Cut Loose Gemstone GIT Certified 15X15 MM-AAA Ring & High Jewelery Making Gem