Rocks, Minerals & Fossils

BOULDER OPAL 10 CTS mwf2257 First Image

#image-loader-main { display: none; }

BOULDER OPAL 10 CTS mwf2257 First Image

BOULDER OPAL 10 CTS mwf2257

Total Sales0 Sold

Median Sale Price

Sale Price Range

Similar Upcoming Sales

8.92ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

8.92ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

1 day Left

8.92ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

8.92ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Mar 01, 2026

5.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

5.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

1 day Left

10.46ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

10.46ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Mar 01, 2026

5.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

5.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Mar 01, 2026

10.46ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

10.46ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

1 day Left

12.30ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

12.30ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

1 day Left

12.30ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

12.30ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Mar 01, 2026

2.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

2.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

1 day Left

2.86 ct Natural Multicolor Opal Triplet, Oval Cabochon, Opaque, Australia (1 of 3)

2.86 ct Natural Multicolor Opal Triplet, Oval Cabochon, Opaque, Australia

Weatherham Estate Treasures

6 days Left

2.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

2.95ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Mar 01, 2026

3.22 ct Natural Multicolor Opal Triplet, Fancy Cabochon, Opaque, Australia (1 of 3)

3.22 ct Natural Multicolor Opal Triplet, Fancy Cabochon, Opaque, Australia

Weatherham Estate Treasures

6 days Left

16.41ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

16.41ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Mar 01, 2026

19.85ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

19.85ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

Mar 01, 2026

16.41ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

16.41ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

1 day Left

19.85ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

19.85ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL

1 day Left

Similar Sale History

Unlock All Prices

Sold

Rectangular shape Boulder Opal doublet, weight 3.82 cts (1 of 7)

Rectangular shape Boulder Opal doublet, weight 3.82 cts Rectangular shape Boulder Opal doublet, weight 3.82 cts. Stone measured 13.9 x 10 mm. Opal has beautiful play of color. Country of origin Australia.

Sold

GIT Certified Natural Boulder Opal 4.28 Cts White Color with play Of Color Effect (1 of 7)

GIT Certified Natural Boulder Opal 4.28 Cts White Color with play Of Color Effect Product Type: Natural Boulder Opal Product Code: O0013 Piece(s): 1 Weight: 4.28 Carats Color: White With Play Of Color Effect Clarity: Opaque with natural inclusions. Shape: Rectangular Cushion Size:

Sold

GIT Certified Natural Boulder Opal 1.73 Cts Black with play Of Color Effect (1 of 7)

GIT Certified Natural Boulder Opal 1.73 Cts Black with play Of Color Effect Product Type: Natural Boulder Opal Product Code: O0016 Piece(s): 1 Weight: 1.73 Carats Color: Black with Play Of Color Effect Clarity: Opaque with natural inclusions. Shape: Triangular polished Size:

Sold

14K Yellow gold opal ring (1 of 5)

14K Yellow gold opal ring the ring is set with cabochon opals app 10 cts. It weighs 10.1 gr size 5

Sold

Wonderful " Natural Dendritic Opal " 10.92 Cts Natural Dendritic Opal (1 of 2)

Wonderful " Natural Dendritic Opal " 10.92 Cts Natural Dendritic Opal No Reserve! Title: Wonderful " Natural Dendritic Opal " 10.92 Cts Natural Dendritic Opal Additional Info: Gemstone : Natural Dendritic Opal Shape and cut : Round Cabochon Weight : 10.92 Carats Measure

Sold

AUSTRALIAN MATRIX BOULDER OPAL - Preform Lot, 10 Pieces, 20.4g, 14-17.9mm (Images Taken Wet) (1 of 2)

AUSTRALIAN MATRIX BOULDER OPAL - Preform Lot, 10 Pieces, 20.4g, 14-17.9mm (Images Taken Wet)A dazzling lot of preform Australian matrix boulder opals, with individual sizes. These opals have been rubbed and pre-shaped, highlighting their vibrant natural colors and intricate ironstone matrix

AUSTRALIAN MATRIX BOULDER OPAL - Preform Lot, 10 Pieces, 20.4g, 14-17.9mm (Images Taken Wet) (1 of 2)

AUSTRALIAN MATRIX BOULDER OPAL - Preform Lot, 10 Pieces, 20.4g, 14-17.9mm (Images Taken Wet)A dazzling lot of preform Australian matrix boulder opals, with individual sizes. These opals have been rubbed and pre-shaped, highlighting their vibrant natural colors and intricate ironstone matrix

AUSTRALIAN MATRIX BOULDER OPAL - Preform Lot, 10 Pieces, 20.4g, 14-17.9mm (Images Taken Wet) (1 of 2)

AUSTRALIAN MATRIX BOULDER OPAL - Preform Lot, 10 Pieces, 20.4g, 14-17.9mm (Images Taken Wet)A dazzling lot of preform Australian matrix boulder opals, with individual sizes. These opals have been rubbed and pre-shaped, highlighting their vibrant natural colors and intricate ironstone matrix

Sold

AUSTRALIAN MATRIX BOULDER OPAL - Preform Lot, 10 Pieces, 13.6g, 13-21mm (Images Taken Wet) (1 of 2)

AUSTRALIAN MATRIX BOULDER OPAL - Preform Lot, 10 Pieces, 13.6g, 13-21mm (Images Taken Wet)A dazzling lot of preform Australian matrix boulder opals, with individual sizes. These opals have been rubbed and pre-shaped, highlighting their vibrant natural colors and intricate ironstone matrix

Sold

REINSTEIN ROSS: A PAIR OF 22K GOLD AND OPAL EARRINGS (1 of 2)

REINSTEIN ROSS: A PAIR OF 22K GOLD AND OPAL EARRINGS REINSTEIN ROSS: A PAIR OF 22K GOLD AND OPAL EARRINGS Each centering a bezel-set boulder opal measuring approximately 10.85 x 8.50 mm, framed by applied beadwork, weight 7.5 dwt, signed Reinstein Ross

Sold

10.69ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

10.69ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL 10.69ct NATURAL AUSTRALIAN BOULDER OPAL Natural Untreated boulder opal from Australia10.69ct Measures 21.8mm x 14.3mm

Sold

10.46ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL (1 of 2)

10.46ct LOOSE CABOCHON NATURAL AUSTRALIAN BOULDER OPAL 10.46ct NATURAL AUSTRALIAN BOULDER OPAL Natural Untreated boulder opal from Australia10.46ct Measures 16.5mm x 9.8mm Polished cabochon, beautiful

Sold

Raw rough free shape Welo Opal, weight 10.70 cts (1 of 8)

Raw rough free shape Welo Opal, weight 10.70 cts Raw rough free shape Welo Opal, weight 10.70 cts. Measured approximately 16.7 mm x 17 mm. Opal has beautiful play of colors.

Sold

Raw rough free shape Welo Opal, weight 10.51 cts (1 of 7)

Raw rough free shape Welo Opal, weight 10.51 cts Raw rough free shape Welo Opal, weight 10.51 cts. Measured approximately 18.9 x 14.1 x 9.9 mm. Opal has beautiful play of colors.

Sold

10.74 ct Australian Boulder Opal (1 of 3)

10.74 ct Australian Boulder Opal Title: 10.74 ct Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 10.74 Size/Dimensions: 26 mm x 12 mm x 4.5 mm Additional Information: Koroit Opal Fields Please note that this lot has a

Sold

10.45 ct Australian Boulder Opal (1 of 4)

10.45 ct Australian Boulder Opal Title: 10.45 ct Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 10.45 Size/Dimensions: 30.4 mm x 10.0 mm x 4.2 mm Additional Information: Koroit Opal Fields No Reserve: This lot starts

Sold

Opal And Diamond 14K Gold Brooch W 2.5" 22g (1 of 6)

Opal And Diamond 14K Gold Brooch W 2.5" 22g Opal And Diamond 14K Gold Brooch W 2.5" 22g | Eight oval opals, Three diamonds @ .10cts. prong set. Impressed 14K. SA Provenance: From the Estate of Prominent Collector, Leon Zielinski, Macomb County,

Sold

"10KT" YELLOW GOLD OPAL & DIAMOND RING (1 of 2)

"10KT" YELLOW GOLD OPAL & DIAMOND RING A STAMPED "10KT" YELLOW GOLD OPAL & DIAMOND RING. DIAMONDS=0.10CTS. OPAL=0.75CTS. SIZE 8 1/2.

Sold

Oval egg shape Boulder Opal doublet, weight 4.48 cts (1 of 5)

Oval egg shape Boulder Opal doublet, weight 4.48 cts Oval egg shape Boulder Opal doublet, weight 4.48 cts. Stone measured 16.9 x 9 mm. Opal has beautiful play of color. Country of origin Australia.

Sold

Free shape Boulder Opal doublet, weight 1.88 cts (1 of 5)

Free shape Boulder Opal doublet, weight 1.88 cts Free shape Boulder Opal doublet, weight 1.88 cts. Stone measured 11.6 x 7.6 mm. Opal has beautiful play of color. Country of origin Australia.

Sold

AUSTRALIAN MATRIX BOULDER OPAL - Preform Rough Lot, 10 Pieces, 19g, 16-27mm (Images Taken Wet) (1 of 2)

AUSTRALIAN MATRIX BOULDER OPAL - Preform Rough Lot, 10 Pieces, 19g, 16-27mm (Images Taken Wet)A dazzling lot of preform Australian matrix boulder opals, with individual sizes. These opals have been rubbed and pre-shaped, highlighting their vibrant natural colors and intricate ironstone matrix

Sold

Oval egg shape Boulder Opal doublet, weight 1.23 cts (1 of 6)

Oval egg shape Boulder Opal doublet, weight 1.23 cts Oval egg shape Boulder Opal doublet, weight 1.23 cts. Stone measured 9.7 x 6.1 mm. Opal has beautiful play of color. Country of origin Australia.

Sold

AUSTRALIAN MATRIX BOULDER OPAL - Preform Rough Lot, 10 Pieces, 20.4g, 13.9-31mm (Images Taken Wet) (1 of 2)

AUSTRALIAN MATRIX BOULDER OPAL - Preform Rough Lot, 10 Pieces, 20.4g, 13.9-31mm (Images Taken Wet)A dazzling lot of preform Australian matrix boulder opals, with individual sizes. These opals have been rubbed and pre-shaped, highlighting their vibrant natural colors and intricate ironstone matrix

Sold

Free shape Boulder Opal doublet, weight 1.30 cts (1 of 5)

Free shape Boulder Opal doublet, weight 1.30 cts Free shape Boulder Opal doublet, weight 1.30 cts. Stone measured 9.8 x 6.8 mm. Opal has beautiful play of color. Country of origin Australia.

TOP