Results for “Rare Rocks”

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Rare trilobite Kettneraspis dickinsoni: Title: Rare trilobite Kettneraspis dickinsoni Origin: Morocco Size: c. 3.1 cm long trilobite Description: Species: Kettneraspis dickinsoni Age: Devonian Locality: Morocco Measurements: c. 3.1 cm long

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Rare trilobite Kettneraspis dickinsoni

$830

Chairish AuctionsNew York, NY

MEGALODON SHARK TOOTH FROM SOUTH CAROLINA: A rare prehistoric fossil, a Megalodon shark tooth from South Carolina. Megalodon is an extinct species of giant mackerel shark that lived approximately 23 to 3.6 million years ago, from the Early Mio

May 24, 2026

MEGALODON SHARK TOOTH FROM SOUTH CAROLINA

Est. $50-$100

$10

Antique Arena Inc.Brooklyn, NY

Classical Vizille Quartz on matrix: Title: Classical Vizille Quartz on matrix Origin: France Size: 21 x 11 cm Description: Outstanding quartz cluster from the famous Vizille locality. Largest crystals are 3 cm high. Measurements: 21 x 1

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Classical Vizille Quartz on matrix

$900

Chairish AuctionsNew York, NY

3.75 ct Natural Untreated Lime Green Emerald, Panjshir Afghanistan: This striking 3.75-carat lime green emerald originates from the renowned Panjshir Valley in Afghanistan, a region celebrated for producing emeralds of exceptional transparency and vivid color. Cut in

May 31, 2026

3.75 ct Natural Untreated Lime Green Emerald, Panjshir Afghanistan

Est. $1,800-$3,000

$600

Chan & Scott Auction HouseLinghem, Ostergotland

GIA 31.56ct. Bluish Green Rare Grandidierite MADAGASCAR: GIA Certified 31.56 ct. Bluish Green Rare Grandidierite - MADAGASCAR Cut - Oval Modified Brilliant cut Color - Bluish Green Clarity - SI - I Ct. Weight - 31.56 ct. Dimensions - 22.36 x 16.56 x

2 days Left

GIA 31.56ct. Bluish Green Rare Grandidierite MADAGASCAR

Est. $15,000-$20,000

$100

Kissing AuctionDelhi, New Delhi

12.45 Carat ---- Burmese Pink Ruby---- Emerald Step Cut ---- EGL Certified: Burmese pink ruby with an emerald step cut is a significant and rare gemstone. At this weight, it is considered an exceptionally large specimen, as gem-quality Burmese rubies typically occur in much s

May 26, 2026

12.45 Carat ---- Burmese Pink Ruby---- Emerald Step Cut ---- EGL Certified

Est. $20,000-$25,000

$100

California GemstonesSan Diego, CA

0.58ct Round Brilliant Natural Diamond - IGI Certified - E IF - Internally Flawless: Diamond Specification Report Total Carat Weight: 0.58 Carat Shape and Cutting Style: Round Brilliant Color Grade: E (Colorless)

18 hrs Left

0.58ct Round Brilliant Natural Diamond - IGI Certified - E IF - Internally Flawless

Est. $2,350-$2,820

$10

S.Y.EL Diamonds LTDRamat Gan, Israel

Finest small trilobite Dactylocephalus sp.: Title: Finest small trilobite Dactylocephalus sp. Origin: Morocco Size: c. 20 mm long trilobite Description: Species: Dactylocephalus sp. Age: Ordovician Locality: Zagora-Tata area, Morocco Measuremen

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Finest small trilobite Dactylocephalus sp.

$850

Chairish AuctionsNew York, NY

15.570 Carat Pear Cut Fuscia Pink Kunzite Gemstone, Kunzite Stone Ring Jewelry: Title: 15.570 Carat Pear Cut Fuscia Pink Kunzite Gemstone, Kunzite Stone Ring Jewelry Description: Gemstone: Kunzite Carat weight: 15.570 Discover the captivating beauty of our Pink Kunzite Gemstone.

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15.570 Carat Pear Cut Fuscia Pink Kunzite Gemstone, Kunzite Stone Ring Jewelry

$420

Chairish AuctionsNew York, NY

Rare Aglaspidid Tremaglaspis sp.: Title: Rare Aglaspidid Tremaglaspis sp. Origin: Morocco Size: 2.9 cm long - c. 13.5 x 11.5 cm (matrix) Description: Species: Tremaglaspis sp. Age: Lower Ordovician, "Formation des argiles de Fezouata"

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Rare Aglaspidid Tremaglaspis sp.

$750

Chairish AuctionsNew York, NY

Very rare trilobite - Otarionella lkomalii: Title: Very rare trilobite - Otarionella lkomalii Origin: Morocco Size: c. 14 mm long trilobite Description: Species: Otarionella lkomalii Age: Middle Devonian Locality: Morocco Measurements: c. 1.4 c

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Very rare trilobite - Otarionella lkomalii

$600

Chairish AuctionsNew York, NY

Argonauticeras besairiei ammonite with prepared septum: Title: Argonauticeras besairiei ammonite with prepared septum Origin: Madagascar Size: 21 cm diameter Description: Species: Argonauticeras besairiei Age: Cretaceous, Albian Locality: Mahajanga Basin,

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Argonauticeras besairiei ammonite with prepared septum

$650

Chairish AuctionsNew York, NY

10 Carat Brazilian Neon Blue Tourmaline Fancy Cut GIE Certified: A fancy cut is an exceptionally rare, collector-grade gemstone characterized by an intense, electric cyan or neon blue hue, often with subtle green undertones. These stones possess high luminosity, so

May 23, 2026

10 Carat Brazilian Neon Blue Tourmaline Fancy Cut GIE Certified

Est. $25,000-$28,000

$100

California GemstonesSan Diego, CA

15.32 ct Natural Sea Foam Blue Larimar, Oval Cabochon, Untreated: 15.32 ct Natural Sea Foam Blue Larimar, Oval Cabochon, Untreated Natural larimar weighing 15.32 carats, shaped as an oval cabochon with a sea foam blue color. The gem measures 20.13 x 15.19 x 6.08 mm

May 20, 2026

15.32 ct Natural Sea Foam Blue Larimar, Oval Cabochon, Untreated

Est. $400-$500

$260

Weatherham Estate TreasuresCobourg, ON

11 Carat Green Tsavorite Garnet Round Cut GGI Certified: Based on the search results, an 11-carat round green garnet, typically identified as Tsavorite, is a rare, high-value, and intense gemstone, originating from Kenya

May 23, 2026

11 Carat Green Tsavorite Garnet Round Cut GGI Certified

Est. $22,000-$24,000

$100

California GemstonesSan Diego, CA

Rare trilobite Phaetonellus: Title: Rare trilobite Phaetonellus Origin: Morocco Size: 120 x 80 mm matrix Description: Species: Phaetonellus sp. Age: Devonian Locality: Morocco Measurements: c. 14 mm wide (trilobite) - c. 120 x 80

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Rare trilobite Phaetonellus

$550

Chairish AuctionsNew York, NY

Honey Brown Bastnaesite Gemstone: 5.05 CT Loupe Clean Cushion Cut: Title: Honey Brown Bastnaesite Gemstone: 5.05 CT Loupe Clean Cushion Cut Description: jewels, gemstones, mining, minerals, Brown Bastnasite, Bastnasite loosegemstone, Faceted Bastnasite, Bastnasite, R

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Honey Brown Bastnaesite Gemstone: 5.05 CT Loupe Clean Cushion Cut

$850

Chairish AuctionsNew York, NY

RARE 3.16 ct. Natural Orangy Pink Malaya Garnet: RARE 3.16 ct. Natural Orangy Pink Malaya Garnet - TANZANIA Shape - Oval Color - Orangy Pink Clarity - SI1 Ct. Weight - 3.16 ct. Dimensions - 9.30 x 7.60 x 5.40 mm Origin

2 days Left

RARE 3.16 ct. Natural Orangy Pink Malaya Garnet

Est. $3,000-$5,000

$100

Kissing AuctionDelhi, New Delhi

10.02 ct Pear Natural Blue Green Grandidierite: 10.02 ct Pear Natural Blue Green Grandidierite Introducing the Pear Natural Blue Green Grandidierite, a rare and captivating gemstone with a striking blue-green hue and pear-shaped facets. This untrea

May 20, 2026

10.02 ct Pear Natural Blue Green Grandidierite

Est. $800-$1,000

$590

Weatherham Estate TreasuresCobourg, ON

26 Carat Bi Color Ametrine Emerald Step Cut: a rare, naturally occurring bicolor quartz that blends purple amethyst and yellow/orange citrine in a single crystal, primarily sourced from the Anahi mine in Bolivia. It is valued for its unique,, vi

4 days Left

26 Carat Bi Color Ametrine Emerald Step Cut

Est. $800-$1,500

$50

California GemstonesSan Diego, CA

Rare trilobite Caudillaenus nicolasi: Title: Rare trilobite Caudillaenus nicolasi Origin: Morocco Size: 15.5 cm long trilobite - if outstretched Description: Species: Caudillaenus nicolasi Age: Ordovician Locality: Morocco Measurements: 1

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Rare trilobite Caudillaenus nicolasi

$300

Chairish AuctionsNew York, NY

47.90 Carats Rare Golden Kunzite Gemstone - 22X18X15 mm: 47.90 Carats Rare Golden Kunzite Gemstone - 22X18X15 mmShipping Rate: $15.00 .shipping rates are determined by Parcel weight and destination.Combined shipping: We offer combine shipping on multiple it

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47.90 Carats Rare Golden Kunzite Gemstone - 22X18X15 mm

$550

Fantasy JewelryMuscat, AE

47.90 Carats Rare Golden Kunzite Gemstone - 22X18X15 mm: 47.90 Carats Rare Golden Kunzite Gemstone - 22X18X15 mmShipping Rate: $15.00 .shipping rates are determined by Parcel weight and destination.Combined shipping: We offer combine shipping on multiple it

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47.90 Carats Rare Golden Kunzite Gemstone - 22X18X15 mm

$550

Fantasy JewelryMuscat, AE

A RARE SCOLECITE SPECIMEN FORMATION: Rare and delicate scolecite specimen from the Deccan Basalts, Aurangabad, Maharashtra, India 9" wide.

Jun 15, 2026

A RARE SCOLECITE SPECIMEN FORMATION

Est. $175-$250

$150

J. Greenstein & Co., Inc.Cedarhurst, NY

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