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Polished Malachite and Chrysocolla Specimen: Beautiful polished malachite and chrysocolla specimen from the DR Congo. 3" x 4” x 3”. 1 pound, 11 ounces.

Feb 22, 2026

Polished Malachite and Chrysocolla Specimen

Fossils & Gemstones of Houston

Est. $150-$250

A MASSIVE APOPHYLLITE SPECIMEN WITH STILBITE: 14.5" LONG AND 13.5" WIDE HERE IS ONE OF THE MOST GORGEOUS APOPHYLLITE SPECIMENS WITH STILBITE THAT I HAVE EVER HAD

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A MASSIVE APOPHYLLITE SPECIMEN WITH STILBITE

J. Greenstein & Co., Inc.

Friedrich Justin Bertuch (1747–1822) – Geological Curiosities – Hand-coloured engraving (1800): "Verm. Gegenstande. I. III." presents a collection of three geological specimens, categorized as miscellaneous objects of natural history. The upper register illustrates two examples of dendritic mine

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Friedrich Justin Bertuch (1747–1822) – Geological Curiosities – Hand-coloured engraving (1800)

Proverde Auctions

Est. $75-$150

Large Rare Scolecite Specimen: Rare, large and delicate scolecite specimen from the Deccan Basalts, Aurangabad, Maharashtra, India. 7” x 12.5" x 8”. 13 pounds, 4 ounces.

Feb 22, 2026

Large Rare Scolecite Specimen

Fossils & Gemstones of Houston

Est. $900-$1,200

A POLISHED LABRADORITE SPECIMEN: Madagascar. 7.7” x 4.5” x 1.7”. 2294.8 grams.

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A POLISHED LABRADORITE SPECIMEN

J. Greenstein & Co., Inc.

Cubic Pyrite and Quartz Specimen: Cubic pyrite and quartz formation from the Huanzala Mine in Ancash, Peru. 6" x 7" x 3". 5 pounds, 6 ounces.

Feb 22, 2026

Cubic Pyrite and Quartz Specimen

Fossils & Gemstones of Houston

Est. $600-$800

AN APOPHYLLITE WITH STILBITE SPECIMEN.: 8” x 5.5” x 3.1”. The weight is 2355.8 grams.

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AN APOPHYLLITE WITH STILBITE SPECIMEN.

J. Greenstein & Co., Inc.

Cubic Pyrite, Apatite and Sphalerite Specimen: Cubic pyrite, apatite and sphalerite formation from the Huanzala Mine in Ancash, Peru. 4.25" x 6.5" x 3". 4 pounds, 7 ounces.

Feb 22, 2026

Cubic Pyrite, Apatite and Sphalerite Specimen

Fossils & Gemstones of Houston

Est. $800-$900

Cubic Pyrite, Quartz and Sphalerite Specimen: Beautiful, large cubic pyrite, quartz and sphalerite formation from the Huanzala Mine in Ancash, Peru. 7.5" x 8.5" x 4". 14 pounds, 3 ounces.

Feb 22, 2026

Cubic Pyrite, Quartz and Sphalerite Specimen

Fossils & Gemstones of Houston

Est. $2,000-$2,500

Large Rock Crystal Specimen , Unique Shape: This stone is cut and polished in this unique shape . It has layers and layers on different stone in it . Have never seen one in this design . Purchased a long time ago in Rio Brazil . Has been kept i

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Large Rock Crystal Specimen , Unique Shape

Chairish Auctions

Trio of Studio Ceramic Nature Specimens: Three studio ceramic abstract nature specimens in attractive earth tones depicting two podded beans and an oversized acorn with nut. Excellent, vintage condition with no losses. We have other small co

2026

Trio of Studio Ceramic Nature Specimens

Chairish Auctions

Est. $150-$450

Buy Now for $200.00

AN APOPHYLITE AND SCOLECITE SPECIMEN INDIA: 14" x 4" in size. Magnficent in structure

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AN APOPHYLITE AND SCOLECITE SPECIMEN INDIA

J. Greenstein & Co., Inc.

15.81 Carats Boulder Opal Rough - Natural Winton - 15.8 x 13.3 x 6.5 mm, 26XK: This striking boulder opal rough from Winton showcases brilliant veins of electric blue and green fire, naturally embedded within its rich brown ironstone matrix. The vivid play-of-color flashes brigh

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15.81 Carats Boulder Opal Rough - Natural Winton - 15.8 x 13.3 x 6.5 mm, 26XK

Est. $30-$60

Cubic Pyrite, Chalcopyrite and Fluorescent Calcite Specimen: Cubic pyrite, chalcopyrite and highly fluorescent calcite formation from the Huanzala Mine in Ancash, Peru. 7" x 9" x 5". 8 pounds, 7 ounces.

Feb 22, 2026

Cubic Pyrite, Chalcopyrite and Fluorescent Calcite Specimen

Fossils & Gemstones of Houston

Est. $1,500-$2,000

Cubic Pyrite, Chalcopyrite and Fluorescent Calcite Specimen: Cubic pyrite, chalcopyrite and highly fluorescent calcite formation from the Huanzala Mine in Ancash, Peru. 8" x 9" x 5". 11 pounds, 12 ounces.

Feb 22, 2026

Cubic Pyrite, Chalcopyrite and Fluorescent Calcite Specimen

Fossils & Gemstones of Houston

Est. $1,500-$2,000

Polished Malachite and Chrysocolla Specimen: Beautiful polished malachite and chrysocolla specimen from the DR Congo. 4.75” x 4” x 1.5”. 1 pound, 14 ounces.

Feb 22, 2026

Polished Malachite and Chrysocolla Specimen

Fossils & Gemstones of Houston

Est. $250-$300

Rare Dark Polished Bullseye Malachite Specimen: Rare dark polished bullseye malachite specimen from the DR Congo. 4.5” x 4.5” x 2”. 2 pounds, 14 ounces.

Feb 22, 2026

Rare Dark Polished Bullseye Malachite Specimen

Fossils & Gemstones of Houston

Est. $500-$600

Huge Polished Lapis Lazuli Slab: Fourteen pound, nineteen inch tall, A grade, finely polished lapis lazuli slice/slab. An outstanding display specimen. 19" x 8.25" x 1.5".

Feb 22, 2026

Huge Polished Lapis Lazuli Slab

Fossils & Gemstones of Houston

Est. $2,000-$3,500

Huge Galena Specimen With Calcite: Huge galena specimen with calcite crystals from the Brushy Creek Mine in Missouri.. 8” x 6.5” x 6.5”. 36 pounds, 14 ounces.

Feb 22, 2026

Huge Galena Specimen With Calcite

Fossils & Gemstones of Houston

Est. $1,000-$1,500

Two Azurite Specimens: Two azurite formations from Morocco. 13 ounces.

Feb 22, 2026

Two Azurite Specimens

Fossils & Gemstones of Houston

Est. $200-$300

AN APOPHYLLITE SPECIMEN: India. 10” x 6” x 3”. The weight is 3020 grams

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AN APOPHYLLITE SPECIMEN

J. Greenstein & Co., Inc.

AN APOPHYLITE SPECIMEN INDIA: Green in color. 11" long.

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AN APOPHYLITE SPECIMEN INDIA

J. Greenstein & Co., Inc.

A POLISHED LABRADORITE SPECIMEN: Madagascar. 9.4” x 5.5” x 2”. 4090 grams

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A POLISHED LABRADORITE SPECIMEN

J. Greenstein & Co., Inc.

Fine Large Ancient Ammonite Specimen: Gorgeous ancient fossilized ammonite section cut in half to expose beautiful crystallizations and ancient patina throughout. Incredible all natural earthen tones including brown, caramel, ochre, red a

Feb 19, 2026

Fine Large Ancient Ammonite Specimen

Inspired Auctions

Est. $300-$400

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