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Celestite Geode: Celestite geode from Madagascar. 7.25" x 8" x 4". 11 lbs, 4 oz.

Apr 26, 2026

Celestite Geode

Fossils & Gemstones of Houston

Amethyst and Calcite Crystal Cluster: Amethyst and calcite crystal cluster from Brazil. 9.5" x 13.5 x 3”. 16 lbs, 9 oz.

Apr 26, 2026

Amethyst and Calcite Crystal Cluster

Fossils & Gemstones of Houston

Copper Ore in Matrix: Copper ore in matrix from the Winonia Mine in Houghton County, Michigan. 5" x 5.5" x 1". 1 pound, 13 ounces.

Apr 26, 2026

Copper Ore in Matrix

Fossils & Gemstones of Houston

Polished Bullseye Malachite Formation: Polished bullseye malachite formation from the DR Congo. 5.5" x 7.25" x 2". 3 pounds, 12 ounces.

Apr 26, 2026

Polished Bullseye Malachite Formation

Fossils & Gemstones of Houston

Dark Amethyst Cornucopia Geode: Deep amethyst cornucopia geode with dark purple crystals. 7.5" x 12" x 16". 43 lbs, 7 oz.

Apr 26, 2026

Dark Amethyst Cornucopia Geode

Fossils & Gemstones of Houston

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

Apr 26, 2026

Cubic Pyrite and Quartz Specimen

Fossils & Gemstones of Houston

A LARGE AMETHYST CATHEDRAL POLISHED EDGES: light purple in color. With a nice soft blue polished rim. 19.85 kilograms and 18" tall.

Apr 21, 2026

A LARGE AMETHYST CATHEDRAL POLISHED EDGES

J. Greenstein & Co., Inc.

A LARGE AMETHYST CATHEDRAL POLISHED EDGES: light purple in color. With a nice soft blue polished rim. 24 kilograms and 17" tall.

Apr 21, 2026

A LARGE AMETHYST CATHEDRAL POLISHED EDGES

J. Greenstein & Co., Inc.

Branch Coral Formation on Lucite Stand: White branch coral formation from the Philippines on custom acrylic stand. 11" x 14" x 10". 2 pounds, 5 ounces.

Apr 26, 2026

Branch Coral Formation on Lucite Stand

Fossils & Gemstones of Houston

Copper Ore in Matrix: Copper ore in matrix from the Winonia Mine in Houghton County, Michigan. 6" x 5.25" x .75". 2 pounds, 8 ounces.

Apr 26, 2026

Copper Ore in Matrix

Fossils & Gemstones of Houston

Large Polished Labradorite Freeform: Large polished labradorite freeform from Madagascar. 9" x 6” x 2.5". 9 pounds, 11 ounces.

Apr 26, 2026

Large Polished Labradorite Freeform

Fossils & Gemstones of Houston

Remarkable Calcite Stalactite: Remarkable, freestanding calcite stalactite from China. 18.5" x 2.5" x 5.5". 4 lbs, 9 oz.

Apr 26, 2026

Remarkable Calcite Stalactite

Fossils & Gemstones of Houston

0.89ct Bluish White Oval Opal Cabochon Gemstones: 0.89ct Bluish White Oval Opal Cabochon Gemstones This matching pair of natural bluish white opals has a total weight of 0.89 carats, averaging approximately 0.45 carats each. Cut as oval cabochons and

Apr 22, 2026

0.89ct Bluish White Oval Opal Cabochon Gemstones

Weatherham Estate Treasures

Rare Axinite Formation: Rare bladed axinite formation from Peru. 5" x 6" x 3.5". 4 pounds, 2 ounces.

Apr 26, 2026

Rare Axinite Formation

Fossils & Gemstones of Houston

Cubic Calcite Crystal Cluster: Cubic calcite crystal cluster. 9" x 6" x 4". 7 pounds, 13 ounces.

Apr 26, 2026

Cubic Calcite Crystal Cluster

Fossils & Gemstones of Houston

Rare Chlorinated Quartz Cluster on Custom Stand: Rare, large chlorinated quartz cluster on custom lucite stand from Brazil. 6" x 8" x 4.5". 6 pounds, 8 ounces.

Apr 26, 2026

Rare Chlorinated Quartz Cluster on Custom Stand

Fossils & Gemstones of Houston

Polished Malachite Formation: Polished malachite formation from the DR Congo. 6” x 5.25” x 3”. 6 lbs, 6 oz.

Apr 26, 2026

Polished Malachite Formation

Fossils & Gemstones of Houston

$Smoky Quartz Crystal With Inclusions on Stand: Smoky quartz crystal with refractive inclusions on metal stand from Brazil. 13.5” x 6.25” x 4”. 6 lbs, 4 oz.$

Apr 26, 2026

Smoky Quartz Crystal With Inclusions on Stand

Fossils & Gemstones of Houston

Large Amethyst Heart on Stand: Large amethyst heart on custom metal stand from Brazil. 15” x 11” x 5”. 14 lbs, 14 oz.

Apr 26, 2026

Large Amethyst Heart on Stand

Fossils & Gemstones of Houston

Huge Agate Slice on Custom Metal Stand: Huge, colorful agate slice on custom metal stand. Polished on both sides. 30” x 18” x 7”. 15 lbs.

Apr 26, 2026

Huge Agate Slice on Custom Metal Stand

Fossils & Gemstones of Houston

Exceptional Celestite Geode: Large, deep blue celestite geode with large crystals from Madagascar. 6” x 7” x 4.5”. 11 lbs, 10 oz.

Apr 26, 2026

Exceptional Celestite Geode

Fossils & Gemstones of Houston

Exceptional Celestite Geode: Large, dark blue celestite geode with large crystals from Madagascar. 7.5” x 6.5” x 4.25”. 12 lbs, 13 oz.

Apr 26, 2026

Exceptional Celestite Geode

Fossils & Gemstones of Houston

Velvety Malachite Formation: Velvety malachite formation from the DR Congo. 6.5" x 5" x 3.25". 4 pounds, 10 ounces.

Apr 26, 2026

Velvety Malachite Formation

Fossils & Gemstones of Houston

Large Polished Labradorite Freeform: Large polished labradorite freeform from Madagascar. 8" x 9.75” x 3.25". 17 pounds, 14 ounces.

Apr 26, 2026

Large Polished Labradorite Freeform

Fossils & Gemstones of Houston

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