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Results for “Boulder Opal Ring”

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3.72Ct Boulder Opal - Australian Opal , 41E: Ksmith Heritage Auctioneers Subject: Natural Boulder Opal Origin: Australia Carat Weight: 3.72Ct Dimension: 12.9x10.2x2.7 mm Treatment: Natural Untreated Type: Cabochon, P

9 hrs Left

3.72Ct Boulder Opal - Australian Opal , 41E

Ksmith Heritage Auctioneers

Est. US$110-US$220

5.84 Carats Turquoise Blue Boulder Opal - Natural Australian Stone, 49XM: This striking boulder opal captivates with a vivid turquoise-blue base that shimmers with subtle flashes of green and violet iridescence, evoking the vivid hues of tropical waters. The stone's smooth,

4 days Left

5.84 Carats Turquoise Blue Boulder Opal - Natural Australian Stone, 49XM

Est. US$80-US$160

5.07 Carats Iridescent Multicolor Boulder Opal - Natural Australian Stone, 56XM: This striking boulder opal dazzles with a kaleidoscopic play of color, shifting through vivid greens, pinks, and iridescent blues across its triangular cabochon form. The stone's translucent, milky ba

4 days Left

5.07 Carats Iridescent Multicolor Boulder Opal - Natural Australian Stone, 56XM

Est. US$80-US$160

7.62Ct Winton Boulder Opal Polished - Australian Opal - Oval Cabochon, 875A: Ksmith Jewels Global Welcome to our auction house, today auction brought to you by Ksmith Jewels Global based in Penang, Malaysia specialize in all kinds of opal and color gemstone both in manufacturi

Apr 04, 2026

7.62Ct Winton Boulder Opal Polished - Australian Opal - Oval Cabochon, 875A

Ksmith Heritage Auctioneers

Est. US$120-US$240

1.93Ct Winton Boulder Opal Polished - Australian Opal - Oval Cabochon, 837A: Ksmith Jewels Global Welcome to our auction house, today auction brought to you by Ksmith Jewels Global based in Penang, Malaysia specialize in all kinds of opal and color gemstone both in manufacturi

Apr 04, 2026

1.93Ct Winton Boulder Opal Polished - Australian Opal - Oval Cabochon, 837A

Ksmith Heritage Auctioneers

Est. US$70-US$140

3.59Ct Boulder Opal Polished - Australian Opal - Oval Cabochon , 604E: Ksmith Heritage Auctioneers Subject: Natural Boulder Opal Origin: Australia Carat Weight: 3.59Ct Dimension: 11 x 8 x 4 mm Treatment: Natural Untreated Shape: Oval Ty

1 day Left

3.59Ct Boulder Opal Polished - Australian Opal - Oval Cabochon , 604E

Ksmith Heritage Auctioneers

Est. US$70-US$140

10.84 Carats Iridescent Multicolor Boulder Opal - Natural Australian Stone, 52XM: This substantial boulder opal dazzles with a dynamic play of color, shifting through ethereal blues, violets, and subtle flashes of iridescent green and pink as light moves across its elongated, taper

4 days Left

10.84 Carats Iridescent Multicolor Boulder Opal - Natural Australian Stone, 52XM

Est. US$60-US$120

3.66 Carats Cream-Blue Boulder Opal - Natural Australian Stone, 48XM: This elegant boulder opal captivates with a soft, creamy base that transitions into cool, translucent blue layers, with subtle flashes of iridescent green and violet shimmering beneath its smooth, tri

4 days Left

3.66 Carats Cream-Blue Boulder Opal - Natural Australian Stone, 48XM

Est. US$60-US$120

4.15 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 13.9x9.9mm, 17XM: This exceptional 4.15-carat Koroit boulder opal cabochon is a natural masterpiece, showcasing a striking, organic formation of milky white and peach-toned opal, infused with a vivid spectrum of play-o

4 days Left

4.15 Carats Koroit Boulder Opal Cabochon - Natural Australian Stones 13.9x9.9mm, 17XM

Est. US$60-US$120

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