October

The birthstones for those born in October are Opal and Tourmaline.

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7 items filtered by: 40.00-49.99ct ×
40ct to 50ct Rough Australian Pipe Opal Pieces
This parcel of beautiful pipe opal was unearthed in the Central Queensland opal fields of Opalton in the 1970s. These pieces would be great as specimens or anyone looking to practice cutting or carving larger opal gemstones. The pieces range...
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41ct TW Boulder Opal Rub Parcel
This beautiful boulder opal rub parcel was mined from a deposit in Winton, Queensland, Australia. "Rubs" are partially preformed rough opals that have been trimmed and shaped to show their potential but are not polished. The images show the stones...
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47.7ct TW Boulder Opal Rub Parcel
This beautiful boulder opal rub parcel was mined from a deposit in Winton, Queensland, Australia. "Rubs" are partially preformed rough opals that have been trimmed and shaped to show their potential but are not polished. The images show the stones...
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43.77ct Split Boulder Opal Oval Cut
A split of 43.77ct Boulder Opal Oval Cut.  Stone Type Opal - Boulder Cut Oval Weight 43.77ct  Dimensions Approx. 22x15mm 4mm deep Colour Multicolour Clarity NA Treatment None Origin Australia, Responsible Sourcing Reference  LG700095 Notes *Please note that this stone...
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43.8ct Boulder Opal Free-Form Cabochon Cut
43.8ct Mushroom Pattern Boulder Opal Free-Form Cabochon Cut. Stone Type Opal - Boulder Cut Cabochon Weight 43.8ct  Dimensions Approx. 30x20mm 8.5mm deep Colour Multicolour Clarity NA Treatment None Origin Australia, Responsible Sourcing Reference  LG700104 Notes *Please note that this stone...
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48.10ct Polished Opalized Shell
48.10ct Free-form Boulder Opal Cabochon. Stone Type Opal - Boulder Cut Free form, Cabochon Weight 48.10ct  Dimensions Approx. 35x15mm 14.6mm deep Colour Multicolour Clarity NA Treatment None Origin Australia, Responsible Sourcing Reference  LG700112 Notes *Please note that this stone has...
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