169 items
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3.2 ct White Boulder Opal - Multicolour Flash Streak -
3.2ct Boulder Opal - Green, Purple & Crimson Fire on Host Rock Body Tone -
3.3 ct Purple Boulder Opal - Multicolour Pinfire Play -
3.3ct Boulder Opal - Lavender Base with Multicolour Band -
3.3ct Boulder Opal - Neon Green & Crimson Streaks on Blue Host Body Tone -
3.5ct Boulder Opal - Green & Blue Play on Blue Host Body Tone -
3.5ct Boulder Opal - Green & Electric Blue Fire on Blue Host Body Tone -
3.6 ct Boulder Opal - Multicolour Pinfire Ribbon in Clear Opal -
3.6ct Boulder Opal - Broad Multicolour Flash -
3.6ct Indigo Blue Boulder Opal -
3.8 ct Blue-Violet Boulder Opal - Soft Colour Movement -
3.8ct Boulder Opal - Green Fire on Dark Blue Base -
3.9 ct Blue Boulder Opal - Green Feature Flash -
33.4 ct Boulder Opal - Multicolour Banded Flash -
387ct Ironstone Boulder Opal Matrix — Blue & Green Embedded Opal -
4.0 ct Boulder Opal - Green, Blue & Violet Flash -
4.0 ct Rectangular Boulder Opal - Layered Structure with Crimson & Green Colour -
4.0ct Boulder Opal - Blue Host Body Tone with Subtle Internal Play -
4.0ct Boulder Opal - Cat-Eye Effect with Green & Gold Play on Dark Host Body Tone -
4.3ct Boulder Opal - Green & Blue Play Through Ironstone Matrix with Directional Neon Blue, Orange & Red -
4.5 ct Boulder Opal - Broad Multicolour Flash -
4.5 ct White Boulder Opal - Soft Pastel Colour Play -
4.5ct Boulder Opal - Bluish Purple Body Tone with Green Play Bands -
4.7ct Boulder Opal - Broad Bands of Pink & Green Pinfire on Blue Host Body Tone
