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3.85 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 74XL: This striking Koroit Yowah opal cabochon, measuring 12.5x10mm, features a dense, textured ironstone matrix in layered tones of deep chocolate brown, warm tan, and jet black. The stone's internal lands

3 days Left

3.85 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 74XL

Est. $60-$120

3.82 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.8x9.5mm, 7XM: This exceptional 3.82-carat Koroit boulder opal cabochon is a natural geological masterpiece, featuring a dense, intricate matrix of swirling chocolate-brown and deep plum ironstone, interwoven with v

3 days Left

3.82 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.8x9.5mm, 7XM

Est. $60-$120

10.40 Carats Brown Matrix Multicolor Koroit Yowah Opal Cabochon - Natural Australian Stone, 20XM: This singular Koroit Yowah opal cabochon presents a striking natural tableau, with a rich brown ironstone matrix interwoven with delicate veins and flecks of iridescent opal. The stone's oval form sho

3 days Left

10.40 Carats Brown Matrix Multicolor Koroit Yowah Opal Cabochon - Natural Australian Stone, 20XM

Est. $60-$120

29.01 Carats Winton Boulder Opal Rough Slab - Natural Australian Opion, 35XP: This striking 29.01ct Winton boulder opal rough slab boasts a mesmerizing blend of aquatic blue and seafoam-green iridescence, embedded within its natural ironstone matrix. Measuring a substantial 27

3 days Left

29.01 Carats Winton Boulder Opal Rough Slab - Natural Australian Opion, 35XP

Est. $80-$160

4.38 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.9x9.6mm, 12XM: This striking 4.38-carat Koroit boulder opal cabochon is a natural geological masterpiece, featuring a dramatic banded ironstone matrix interwoven with vivid veins of iridescent play-of-color. The ova

3 days Left

4.38 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.9x9.6mm, 12XM

Est. $60-$120

2.55 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 11.8x6.8mm, 9XM: This striking 2.55-carat Koroit boulder opal cabochon is a natural geological masterpiece, featuring vivid veins of iridescent play-of-color that snake through a rich, dark ironstone matrix. The elong

3 days Left

2.55 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 11.8x6.8mm, 9XM

Est. $60-$120

21.04 Carats Winton Boulder Opal Rough Slice - Natural Australian Stone, 43XP: This substantial Winton boulder opal rough slice showcases a striking horizontal band of vivid sky-blue and cerulean play-of-color, nestled within its natural ironstone host rock. Measuring precisely

3 days Left

21.04 Carats Winton Boulder Opal Rough Slice - Natural Australian Stone, 43XP

Est. $60-$120

3.63 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 11.3x9.2mm, 10XM: This exceptional 3.63-carat Koroit boulder opal cabochon is a natural work of art, featuring vivid veins of electric blue and iridescent play-of-color that snake through a warm, earthy ironstone matri

3 days Left

3.63 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 11.3x9.2mm, 10XM

Est. $80-$160

Antique Toothbrush Holders Book: Title: Antique Toothbrush Holders Book Dimension: 8 1/2” wide x 11” tall. Date: --- Additional Information: Book on Antique Toothbrush Holders by John, Nancy & Brooke Smith. A must Guide f

5 days Left

Antique Toothbrush Holders Book

Chairish Auctions

Est. $25-$30

4.19 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 72XL: This substantial Koroit Yowah opal cabochon, measuring 18x9.3mm, features a dense, textured ironstone matrix in layered tones of deep chocolate brown, warm tan, and jet black. The stone's internal lan

3 days Left

4.19 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 72XL

Est. $60-$120

23.95 Carats Winton Boulder Opal Rough Slab - Natural Australian Stone, 36XP: This striking Winton boulder opal rough slab showcases a luminous band of ethereal sky-blue and pale aqua play-of-color, nestled within its natural ironstone host rock. Measuring precisely at 27.6 x 1

3 days Left

23.95 Carats Winton Boulder Opal Rough Slab - Natural Australian Stone, 36XP

Est. $60-$120

2.34 Carats Brown Matrix Multicolor Koroit Yowah Opal Cabochon - Natural Australian Stone, 23XM: This singular Koroit Yowah opal cabochon presents a striking natural tableau, with a rich brown ironstone matrix interwoven with delicate veins and flecks of iridescent opal. The stone's oval form sho

3 days Left

2.34 Carats Brown Matrix Multicolor Koroit Yowah Opal Cabochon - Natural Australian Stone, 23XM

Est. $60-$120

6.09 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 84XL: This exceptional Koroit Yowah opal cabochon, calibrated to 17.3x10.7mm, features a dense, textured ironstone matrix in layered tones of deep chocolate brown, bronze, and jet black. Scattered throughou

3 days Left

6.09 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 84XL

Est. $60-$120

Featured

5.11 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 13.3x9.5mm, 13XM: This exceptional 5.11-carat Koroit boulder opal cabochon is a natural masterpiece, showcasing a dense, intricate tapestry of multicolored play-of-color set within a rich, earthy ironstone matrix. The

3 days Left

5.11 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 13.3x9.5mm, 13XM

Est. $80-$160

2.52 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.7x8.3mm, 6XM: This striking 2.52-carat Koroit boulder opal cabochon is a natural geological masterpiece, featuring a dense, intricate matrix of swirling chocolate-brown ironstone, interwoven with vivid veins of iri

3 days Left

2.52 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 12.7x8.3mm, 6XM

Est. $60-$120

11.58 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 85XL: This substantial Koroit Yowah opal cabochon, measuring 18x12.8mm, features a dramatic composition of deep plum and black ironstone matrix, interwoven with bold veins of iridescent opal. The opal inclu

3 days Left

11.58 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 85XL

Est. $60-$120

5.82 Carats Soft Blue and Iridescent Green Boulder Opal Cabochon - Natural Australian Stone, 46XM: This striking boulder opal cabochon features a smooth, triangular form with a rich brown ironstone matrix framing a luminous core of soft blue opal, accented by delicate iridescent green and golden fl

3 days Left

5.82 Carats Soft Blue and Iridescent Green Boulder Opal Cabochon - Natural Australian Stone, 46XM

Est. $80-$160

1.95 Carats Brown Matrix Multicolor Koroit Yowah Opal Cabochon - Natural Australian Stone, 21XM: This singular Koroit Yowah opal cabochon presents a striking natural tableau, with a rich brown ironstone matrix interwoven with delicate veins and flecks of iridescent opal. The stone's oval form sho

3 days Left

1.95 Carats Brown Matrix Multicolor Koroit Yowah Opal Cabochon - Natural Australian Stone, 21XM

Est. $60-$120

17.81 Carats Deep Blue and Brown Matrix Boulder Opal Cabochon - Natural Australian Stone, 41XM: This substantial boulder opal cabochon features a dramatic, layered composition of deep blue opal interwoven with rich brown and maroon ironstone matrix, accented by milky white opal veins that flow a

3 days Left

17.81 Carats Deep Blue and Brown Matrix Boulder Opal Cabochon - Natural Australian Stone, 41XM

Est. $80-$160

2.88 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 67XL: This striking Koroit Yowah opal cabochon, measuring 11.2x8.1mm, features a dense, layered ironstone matrix in deep chocolate brown and jet black, with a prominent, irregular inclusion of pale, creamy

3 days Left

2.88 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 67XL

Est. $60-$120

42.94 Carats Winton Boulder Opal Rough Slab - Natural Australian Opal, 41XP: This museum-grade Winton boulder opal rough slab presents a dramatic canvas of mesmerizing seafoam-green and sky-blue iridescence, embedded within its natural ironstone matrix. Measuring a substantial

3 days Left

42.94 Carats Winton Boulder Opal Rough Slab - Natural Australian Opal, 41XP

Est. $60-$120

7.13 Carats Multicolor Iridescent Boulder Opal Cabochon - Natural Australian Stone, 50XM: This striking boulder opal cabochon features an elongated, tapered form with a rich brown ironstone matrix interspersed with vibrant, iridescent opal inclusions. The stone's polished surface showcases

3 days Left

7.13 Carats Multicolor Iridescent Boulder Opal Cabochon - Natural Australian Stone, 50XM

Est. $60-$120

4.34 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 13.3x9.3mm, 4XM: This striking 4.34-carat Koroit boulder opal cabochon is a natural geological masterpiece, featuring a dramatic banded ironstone matrix with layered hues of deep plum, warm terracotta, and golden ochr

3 days Left

4.34 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 13.3x9.3mm, 4XM

Est. $60-$120

2.72 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 79XL: This striking Koroit Yowah opal cabochon, measuring 12.7x8.5mm, features a dense, layered ironstone matrix in deep chocolate brown and warm tan, interwoven with broad, milky-blue opal veins. Concentra

3 days Left

2.72 Carats Koroit Yowah Opal Cabochon - Natural Australian Single Stone, 79XL

Est. $60-$120

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