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Results for “Mineral Rocks”

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72.18Ct Pietersite Slab - Gemstone Crystal - Freeform Slice, 428B: Ksmith Heritage Auctioneers Subject: Natural Pietersite Origin: Namibia, South Africa Carat Weight: 72.18Ct Dimension: 42.6 x 39 x 5.9 mm Treatment: Natural Untreated Shape: Fr

2 days Left

72.18Ct Pietersite Slab - Gemstone Crystal - Freeform Slice, 428B

Ksmith Heritage Auctioneers

Est. $50-$100

Featured

2.56Ct Zambian Emerald - Polished Faceted , 453E: Ksmith Heritage Auctioneers Subject: Natural Zambian Emerald Origin: Zambia Carat Weight: 2.56Ct Dimension: 9.2x7.6x4.7 mm Treatment: Oiled Type: Faceted, Polished

4 days Left

2.56Ct Zambian Emerald - Polished Faceted , 453E

Ksmith Heritage Auctioneers

Est. $190-$380

Featured

$A Burmese Jadeite Jade Rough, 20th Century, 55FS: A piece of Burmese jadeite jade rough, with a vibrant green matrix and prominent white mineral inclusions. The rough is shaped as an irregular, angular form, with visible natural fractures and a parti$

1 day Left

A Burmese Jadeite Jade Rough, 20th Century, 55FS

Est. $40-$80

Featured

4.03cts Natural Watermelon Tourmaline - Bi-Colour Faceted Cut , 846E: Ksmith Heritage Auctioneers Subject: Natural Tourmaline Origin: Africa Carat Weight: 4.03 cts Dimension: 10.4x8.5x4.8 mm Type: Faceted, Polished

3 days Left

4.03cts Natural Watermelon Tourmaline - Bi-Colour Faceted Cut , 846E

Ksmith Heritage Auctioneers

Est. $110-$220

Large lot of assorted rocks and minerals from the estate of Charles J. Carlotti of the Hudson: Large lot of assorted rocks and minerals from the estate of Charles J. Carlotti of the Hudson Valley…...just as we found them on display in his home…..

Apr 10, 2026

Large lot of assorted rocks and minerals from the estate of Charles J. Carlotti of the Hudson

JMW Auction Service

Est. $200-$400

Large lot books on Minerals, Rocks, Jewelry, Metals, and related, including years of soft cover: Large lot books on Minerals, Rocks, Jewelry, Metals, and related, including years of soft cover publications tied together with strings…...from estate collection of Charles J. Carlotti.

Apr 10, 2026

Large lot books on Minerals, Rocks, Jewelry, Metals, and related, including years of soft cover

JMW Auction Service

Est. $200-$400

1150 Grams Brucite Collector Mineral Specimen Rocks, Minerals - 20X13X6 cm: 1150 Grams Brucite Collector Mineral Specimen Rocks, Minerals - 20X13X6 cmShipping Rate: FREE SHIPPING .shipping rates are determined by Parcel weight and destination.Combined shipping: We offer combi

4 days Left

1150 Grams Brucite Collector Mineral Specimen Rocks, Minerals - 20X13X6 cm

Fantasy Jewelry

Est. $300-$550

1150 Grams Brucite Collector Mineral Specimen Rocks, Minerals - 20X13X6 cm: 1150 Grams Brucite Collector Mineral Specimen Rocks, Minerals - 20X13X6 cmShipping Rate: FREE SHIPPING .shipping rates are determined by Parcel weight and destination.Combined shipping: We offer combi

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1150 Grams Brucite Collector Mineral Specimen Rocks, Minerals - 20X13X6 cm

Fantasy Jewelry

1150 Grams Brucite Collector Mineral Specimen Rocks, Minerals - 20X13X6 cm: 1150 Grams Brucite Collector Mineral Specimen Rocks, Minerals - 20X13X6 cmShipping Rate: FREE SHIPPING .shipping rates are determined by Parcel weight and destination.Combined shipping: We offer combi

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1150 Grams Brucite Collector Mineral Specimen Rocks, Minerals - 20X13X6 cm

Fantasy Jewelry

Large Malachite Mineral Specimen: Large Malachite Mineral Specimen. 5.75" H x 9.5" W x 4.5" D. Provenance: From a New York City Collection. Keywords: Crystals, Rocks, Sculpture, Statue, Banded green stone, Metaphysical healing, Decora

May 07, 2026

Large Malachite Mineral Specimen

Auctions at Showplace

Est. $300-$500

ROCK & MINERAL COLLECTION: This lot features a curated collection of various rocks and minerals.

19 hrs Left

ROCK & MINERAL COLLECTION

Salem Auction House

Est. $100-$200

Amethyst Rock Crystal Cathedral Geode: Amethyst Rock Crystal Cathedral Geode, with tourmalinated quartz inclusions. 10" H x 12.5" W x 13" D. Provenance: From a New York City Collection. Keywords: Mineral Specimen, Crystal cluster, Tourmali

9 hrs Left

Amethyst Rock Crystal Cathedral Geode

Auctions at Showplace

Est. $400-$600

Featured

68g Large Reef Gold Nugget (2.1oz): This large Australian gold nugget is an increasingly rare find-one of those substantial, solid pieces that are becoming exceptionally difficult to uncover in today's goldfields. Heavy and chunky with

2 days Left

68g Large Reef Gold Nugget (2.1oz)

Richmond Auctions

Est. $25-$300,000

Featured

Extremely Large 391g Natural Gold Nugget (12.5oz) - Golden Honeycomb: At 391g and 22ct this nugget is an incredible addition to anyone's collection. Nuggets this size in the goldrush days were regular finds, these days a full time prospector would be lucky to find once

2 days Left

Extremely Large 391g Natural Gold Nugget (12.5oz) - Golden Honeycomb

Richmond Auctions

Est. $25-$300,000

$33,000(14 bids)

Featured

Very Large 236g Natural Gold Nugget (7.6 oz): This exceptionally large and beautifully formed gold nugget is a rare and powerful find - both for its physical presence and the story that surrounds it. Naturally water-worn with strong, classic char

2 days Left

Very Large 236g Natural Gold Nugget (7.6 oz)

Richmond Auctions

Est. $25-$300,000

Featured

*7.84Ct Boulder Opal - Australian Opal, 162B: Ksmith Heritage Auctioneers Subject: Natural Boulder Opal Origin: Australia Carat Weight: 7.84Ct Dimension: 15x12.5x4.7 mm Treatment: Natural Untreated Type: Cabochon, Polished

2 days Left

*7.84Ct Boulder Opal - Australian Opal, 162B

Ksmith Heritage Auctioneers

Est. $250-$500

GEOLOGICAL MALACHITE SPECIMEN ON POLISHED NICKEL BASE: Geological malachite specimen, rising on polished nickel base, specimen: approx 4.5"h, 5"w, 2.25"d, overall: approx 5.75"h, 5"w, 3"d, 5.25lbs

1 day Left

GEOLOGICAL MALACHITE SPECIMEN ON POLISHED NICKEL BASE

Austin Auction Gallery

Est. $200-$400

GEOLOGICAL WINDOWPANE SELENITE SPECIMEN ON BLACK MARBLE BASE: Geological windowpane selenite specimen, rising on black marble base, specimen: approx 18.75"h, 12"w, 1"d, overall: approx 22 3/8"h, 12"w, 4.25"d, 13lbs

1 day Left

GEOLOGICAL WINDOWPANE SELENITE SPECIMEN ON BLACK MARBLE BASE

Austin Auction Gallery

Est. $150-$250

Seven Polished Mineral Spheres: A collection of seven polished mineral spheres to include rhodochrosite, larvikite, septaria, mookaite jasper, polychrome jasper, and tiger's eye. Largest: 4in diameter. | You have additional shipping

1 day Left

Seven Polished Mineral Spheres

Briggs Auction, Inc.

Est. $100-$300

GEOLOGICAL BLADE SELENITE CLUSTER ON BLACK MARBLE BASE: Geological blade selenite specimen, on polished nickel rod and black marble base, specimen: approx 10.25"h, 8.75"w, 6"d, overall: approx 11.75"h, 8.75"w, 6"d, 4.75lbs

1 day Left

GEOLOGICAL BLADE SELENITE CLUSTER ON BLACK MARBLE BASE

Austin Auction Gallery

Est. $200-$400

GEOLOGICAL KYANITE SPECIMEN 1-LT TABLE LAMP ON ACRYLIC BASE: Geological kyanite cluster, now fashioned as a single-light table lamp, with dimmer dial, on colorless acrylic base, accompanied by fabric shade, observed operating, specimen: approx 13.5"h, 5"w, 3.5"

1 day Left

GEOLOGICAL KYANITE SPECIMEN 1-LT TABLE LAMP ON ACRYLIC BASE

Austin Auction Gallery

Est. $300-$500

Eight Polished Mineral Spheres: A collection of eight polished spherical minerals to include septarian, tiger's eye, stromatolite, assorted jasper, and petoskey. Largest: 6in diameter. | You have additional shipping options, and are

1 day Left

Eight Polished Mineral Spheres

Briggs Auction, Inc.

Est. $100-$300

GEOLOGICAL HONEYCOMB CALCITE SPECIMEN 1-LIGHT TABLE LAMP: Geological honeycomb calcite specimen, now fashioned as a single-light table lamp, with dimmer dial, on colorless acrylic base, accompanied by fabric shade, observed operating, specimen: approx 19"h,

1 day Left

GEOLOGICAL HONEYCOMB CALCITE SPECIMEN 1-LIGHT TABLE LAMP

Austin Auction Gallery

Est. $300-$500

GEOLOGICAL PETRIFIED WOOD SLICE ON BLACK MARBLE BASE: Geological petrified wood slab, rising on black marble base, specimen: approx 16"h, 10.25"w, 0.75"d, overall: approx 16"h, 10.25"w, 5"d, 11.75lbs

1 day Left

GEOLOGICAL PETRIFIED WOOD SLICE ON BLACK MARBLE BASE

Austin Auction Gallery

Est. $150-$350

Featured

149 gram Rare Large Reef Gold Nugget Extracted From Quartz Vein (4.7 oz): This nugget is 149 grams and 92% purity. It has been locked in a vault since the 80s when it was found, we were lucky enough to get access to this vault owned by a very successful prospector. He found

2 days Left

149 gram Rare Large Reef Gold Nugget Extracted From Quartz Vein (4.7 oz)

Richmond Auctions

Est. $25-$300,000

Featured

19.35Ct Special Cut Pink Topaz Pair - Polished Faceted , 925E: Ksmith Heritage Auctioneers Subject: Natural Pink Topaz Origin: Myanmar Carat Weight: 19.35Ct Dimension: 12.2x12.1x9.8 mm Treatment: Coated Type: Faceted, Polished

3 days Left

19.35Ct Special Cut Pink Topaz Pair - Polished Faceted , 925E

Ksmith Heritage Auctioneers

Est. $170-$340

Featured

Smokey Quartz Sculptural with Massive Golden Rutile Inclusions: This elongated smoky quartz has been carved into a sculptural vessel form, emphasizing flowing lines and an elegant, leaf-like silhouette. Throughout the piece, abundant golden rutile inclusions creat

2 days Left

Smokey Quartz Sculptural with Massive Golden Rutile Inclusions

Richmond Auctions

Est. $25-$300,000

Featured

166.2cts Rainbow Flash Contra Luz Ethiopian Crystal Specimen Rough , 733E: Ksmith Heritage Auctioneers Subject: Natural Ethiopian Crystal Rough Origin: Ethiopia Carat Weight: 166.2 cts Dimension: 43x28x24 mm Treatment: Unheated Type: Rough Specim

3 days Left

166.2cts Rainbow Flash Contra Luz Ethiopian Crystal Specimen Rough , 733E

Ksmith Heritage Auctioneers

Est. $530-$1,060

LARGE GEOLOGICAL AGATE GEODE SPECIMEN ON POLISHED NICKEL BASE: Geological agate slice, rising on polished nickel base, specimen: approx 14.5"h, 14"w, 1.5"d, overall: approx 15.75"h, 14"w, 4"d, 17lbs

1 day Left

LARGE GEOLOGICAL AGATE GEODE SPECIMEN ON POLISHED NICKEL BASE

Austin Auction Gallery

Est. $200-$400

GEOLOGICAL APOPHYLLITE CLUSTER ON BLACK GRANITE BASE: Geological apophyllite cluster, on polished nickel rod and black granite base, specimen: approx 10.5"h, 7.5"w, 4.25"d, overall: approx 13 5/8"h, 7.5"w, 4.25"d, 9.75lbs

1 day Left

GEOLOGICAL APOPHYLLITE CLUSTER ON BLACK GRANITE BASE

Austin Auction Gallery

Est. $150-$350

Loose Diamond - OVAL 0.61ct Fancy Vivid Purplish Pink VS2: Loose Diamond - OVAL 0.61ct Fancy Vivid Purplish Pink VS2 Source: Natural Shape: OVAL Carats: 0.61 Color: Fancy Vivid Purplish Pink Certification: GIA Video:

1 day Left

Loose Diamond - OVAL 0.61ct Fancy Vivid Purplish Pink VS2

Est. $395,148-$513,692

GEOLOGICAL PETRIFIED WOOD SPECIMEN ON BLACK MARBLE BASE: Geological petrified wood slab, Smithville, mounted on black marble base, specimen: approx 16.5"h, 16"w, 5"d, overall: approx 18"h, 16"w, 6"d, 31.5lbs

1 day Left

GEOLOGICAL PETRIFIED WOOD SPECIMEN ON BLACK MARBLE BASE

Austin Auction Gallery

Est. $150-$350

GEOLOGICAL AGATE SLICE 1-LT TABLE LAMP ON ACRYLIC BASE: Geological agate specimen, now fashioned as a single-light table lamp, with dimmer dial, rising on colorless acrylic base, accompanied by fabric shade, observed operating, specimen: approx 10.5"h, 13.

1 day Left

GEOLOGICAL AGATE SLICE 1-LT TABLE LAMP ON ACRYLIC BASE

Austin Auction Gallery

Est. $200-$400

Loose Diamond - ROUND 4.33ct D VVS1: Loose Diamond - ROUND 4.33ct D VVS1 Source: This is a real non-mined Diamond that has been grown in a lab Shape: ROUND Carats: 4.33 Color: D Clarity: VVS1 Certification: GIA Video:

2026

Loose Diamond - ROUND 4.33ct D VVS1

Loose Diamond - CUSHION MODIFIED 16.06ct Fancy Vivid Blue VS1: Loose Diamond - CUSHION MODIFIED 16.06ct Fancy Vivid Blue VS1 Source: This is a real non-mined Diamond that has been grown in a lab Shape: CUSHION MODIFIED Carats: 16.06 Color: Fancy Vivid Blue Certif

3 hrs Left

Loose Diamond - CUSHION MODIFIED 16.06ct Fancy Vivid Blue VS1

Est. $7,748-$10,072

Ideal Loose Diamond - ROUND 3.55ct Fancy Vivid Blue VVS2: Ideal Loose Diamond - ROUND 3.55ct Fancy Vivid Blue VVS2 Source: This is a real non-mined Diamond that has been grown in a lab Shape: ROUND Carats: 3.55 Color: Fancy Vivid Blue Certification: IGI Vide

2026

Ideal Loose Diamond - ROUND 3.55ct Fancy Vivid Blue VVS2

Featured

124.4g Rare Inverted Crystal Large Gold Nugget (4oz): This 124.4-gram Kanowa nugget is nothing short of a showstopper. Found by Tylers mum , Lecky Mahoney over a decade ago this nugget holds a special place in the auction. It was found in an area called

2 days Left

124.4g Rare Inverted Crystal Large Gold Nugget (4oz)

Richmond Auctions

Est. $25-$300,000

Featured

London Blue Topaz 2.93ct Trillion Cut from Brazil VVS Dazzling Blue No reserve: a striking, deep, inky blue-green hue with subtle gray undertones, meticulously shaped into a brilliant trillion cut. Originating from Brazil, this durable 8-on-Mohs-scale gemstone offers exceptional

1 day Left

London Blue Topaz 2.93ct Trillion Cut from Brazil VVS Dazzling Blue No reserve

California Gemstones

Est. $50-$280

Featured

91.5cts Phantom Egg Ethiopian Crystal Specimen Rough , 1011E: Ksmith Heritage Auctioneers Subject: Natural Ethiopian Crystal Rough Origin: Ethiopia Carat Weight: 91.5 cts Dimension: 32x30x20 mm Treatment: Unheated Type: Rough Specime

2 days Left

91.5cts Phantom Egg Ethiopian Crystal Specimen Rough , 1011E

Ksmith Heritage Auctioneers

Est. $150-$300

Featured

14.18Ct Blue Boulder Opal - Australian Opal , 76E: Ksmith Heritage Auctioneers Subject: Natural Boulder Opal Origin: Australia Carat Weight: 14.18Ct Dimension: 18.8x14.2x5.1 mm Treatment: Natural Untreated Type: Cabochon,

3 days Left

14.18Ct Blue Boulder Opal - Australian Opal , 76E

Ksmith Heritage Auctioneers

Est. $90-$180

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