Results for “geology”

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44ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 15FC: This unpolished mineral rough is natural ruby zoisite sourced from Tanzania, exhibiting distinct banded mineral segregation of vibrant green zoisite, magenta ruby crystals, and dark hornblende inclusi

14 hrs Left

44ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 15FC

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

Large Natural Amethyst Geode, Sparkling Druzy Interior: South America, Uruguay or Bolivia, ca. millions of years old. A dramatic natural amethyst geode with a rugged matrix exterior, opened to reveal a sparkling crystal-lined cavity bordered by a band of w

Jul 14, 2026

Large Natural Amethyst Geode, Sparkling Druzy Interior

Est.

$600

-

$900

$200

Artemis Fine ArtsLouisville, CO

137ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 100FB: This unpolished mineral rough is natural ruby zoisite sourced from Tanzania, exhibiting distinct banded mineral segregation of vibrant green zoisite, magenta ruby crystals, and dark hornblende inclusi

14 hrs Left

137ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 100FB

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

101ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 12FC: This unpolished mineral rough is natural ruby zoisite sourced from Tanzania, exhibiting distinct banded mineral segregation of vibrant green zoisite, magenta ruby crystals, and dark hornblende inclusi

14 hrs Left

101ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 12FC

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

Trap Rock Minerals of New Jersey: Trap Rock Minerals of New Jersey New Jersey Geological Survey Bulletin 64. Large map present in rear. Extremely rare Author: Brian Mason Illustrations: B/W

Jul 18, 2026

Trap Rock Minerals of New Jersey

Est.

$200

-

$250

$100

Orange County Estate LiquidatorsOtisville, NY

745ct Natural Type A Burmese Two-Sided Landscape White Cloud Green Jadeite Jade Sliced Rough, 7FA: This uniquely contoured irregular slab is untreated Type A natural Burmese jadeite, retaining rugged dark weathered host rock skin along its outer perimeter edge. Both front and back polished faces sh

14 hrs Left

745ct Natural Type A Burmese Two-Sided Landscape White Cloud Green Jadeite Jade Sliced Rough, 7FA

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

A Chinese Nephrite Jade Landscape Plaque Pendant, 81FC: Carved from pale celadon to grey-green nephrite jade with subtle tonal variation and minor natural inclusions, the object is worked as a vertically oriented plaque with a gently curved upper edge. The

14 hrs Left

A Chinese Nephrite Jade Landscape Plaque Pendant, 81FC

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

$9.12ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 21AV: Hand polished small rounded rectangular cushion cabochon crafted from natural Queensland matrix boulder opal, featuring dark speckled ironstone host matrix interwoven with intricate fractal opal veins$

14 hrs Left

9.12ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 21AV

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

Clear Quartz Crystal Cluster Mineral Specimen: Clear Quartz Crystal Cluster Mineral Specimen, on an oak wood plinth. Overall: 6.75" H x 10" W x 10" D. Provenance: From an East 53rd Street Collection. Keywords: Gemstones, Rock crystal, Geology, Gem

2 days Left

Clear Quartz Crystal Cluster Mineral Specimen

Est.

$300

-

$500

$100

Auctions at ShowplaceAstoria, NY

30.45ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 7AV: Hand polished rounded rectangular cushion cabochon crafted from natural Queensland matrix boulder opal, featuring dense dark ironstone host rock intersected by broad luminous golden opal veins dotted

14 hrs Left

30.45ct Natural Australian Queensland Matrix Boulder Opal Cabochon, 7AV

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

107ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 7FC: This unpolished mineral rough is natural ruby zoisite sourced from Tanzania, exhibiting distinct banded mineral segregation of vibrant green zoisite, magenta ruby crystals, and dark hornblende inclusi

14 hrs Left

107ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 7FC

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

123ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 99FB: This unpolished mineral rough is natural ruby zoisite sourced from Tanzania, exhibiting distinct banded mineral segregation of vibrant green zoisite, magenta ruby crystals, and dark hornblende inclusi

14 hrs Left

123ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 99FB

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

121ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 96FB: This unpolished mineral rough is natural ruby zoisite sourced from Tanzania, exhibiting distinct banded mineral segregation of vibrant green zoisite, magenta ruby crystals, and dark hornblende inclusi

14 hrs Left

121ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 96FB

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

31.52ct Natural Mauritania Ruby Rough (Unheated), 60AT: Natural unheated corundum rough sourced from Mauritanian gem mineral deposits, featuring an irregular tapered crystalline form with concentrated deep magenta ruby coloration localized at the specimen'

14 hrs Left

31.52ct Natural Mauritania Ruby Rough (Unheated), 60AT

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

107ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 93FB: This unpolished mineral rough is natural ruby zoisite sourced from Tanzania, exhibiting distinct banded mineral segregation of vibrant green zoisite, magenta ruby crystals, and dark hornblende inclusi

14 hrs Left

107ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 93FB

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

100ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 10FC: This unpolished mineral rough is natural ruby zoisite sourced from Tanzania, exhibiting distinct banded mineral segregation of vibrant green zoisite, magenta ruby crystals, and dark hornblende inclusi

14 hrs Left

100ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 10FC

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

Geological map Mediterranean West. SE Spain Balearics Algeria BEYSCHLAG 1896: Title: Geological map Mediterranean West. SE Spain Balearics Algeria BEYSCHLAG 1896 Description: Carte géologique internationale de l'Europe - Feuille 37 (BVI) - [Western Mediterranean - south ea

Buy Now

Geological map Mediterranean West. SE Spain Balearics Algeria BEYSCHLAG 1896

$270

Jasper52New York, NY

59ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 25FC: This unpolished mineral rough is natural ruby zoisite sourced from Tanzania, exhibiting distinct banded mineral segregation of vibrant green zoisite, magenta ruby crystals, and dark hornblende inclusi

14 hrs Left

59ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 25FC

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

FEATURED

23.08ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 63AY: Natural sliced slab rough of Queensland boulder opal cutting grade, featuring rich color ironstone matrix with patterns. The face clearly reveals extensive opal veining and pocket formations running t

14 hrs Left

23.08ct Natural Australian Queensland Boulder Opal Sliced Slab Cutting Rough, 63AY

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

Geological Map of the Country between… in Southern Rhodesia—Zimbabwe 1933: Title: Geological Map of the Country between… in Southern Rhodesia—Zimbabwe 1933 Description: Geological Map of the Country between Bikita, Zaka, Chipinga and the Lundi River in Southern R

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Geological Map of the Country between… in Southern Rhodesia—Zimbabwe 1933

$395

Jasper52New York, NY

21.74ct Natural Mauritania Ruby Rough (Unheated), 63AM: This unheated Mauritania ruby rough is a captivating natural crystal specimen, featuring vivid magenta-purple ruby formations embedded in a contrasting greyish matrix. The stone's rugged, unpolished s

14 hrs Left

21.74ct Natural Mauritania Ruby Rough (Unheated), 63AM

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

7.238 Carats Violet and Yellow Ametrine - Natural Brazilian Gemstone, LZ275: This impressive octagon step-cut ametrine showcases a striking, well-defined fusion of deep violet and warm golden-yellow hues, a hallmark of this dual-colored quartz. The step-cut faceting enhances t

2 days Left

7.238 Carats Violet and Yellow Ametrine - Natural Brazilian Gemstone, LZ275

Est.

$45

-

$200

$45

Lazo HeritageThung Wat Don, Sathorn, Bangkok, Bangkok

103ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 1YQ: This unpolished mineral rough is natural ruby zoisite sourced from Tanzania, exhibiting distinct banded mineral segregation of vibrant green zoisite, magenta ruby crystals, and dark hornblende inclusi

2 days Left

103ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 1YQ

Est.

$10

-

$200

$10

Lazo HeritageThung Wat Don, Sathorn, Bangkok, Bangkok

74ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 20FC: This unpolished mineral rough is natural ruby zoisite sourced from Tanzania, exhibiting distinct banded mineral segregation of vibrant green zoisite, magenta ruby crystals, and dark hornblende inclusi

14 hrs Left

74ct Natural Tanzanian Ruby Zoisite Raw Rough Specimen Mineral Stone, 20FC

Est.

$10

-

$200

$10

ThousandPlanetThung Wat Don, Sathorn, Bangkok

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