Results for “Fossil Specimen”

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George B. Sowerby I (1788–1854) – Margarita Shell Specimens – Hand-coloured engraving (1822): "Margarita" illustrates several small marine gastropods, providing a detailed anatomical study of their iridescent, whorled shells and distinct spiral ribbing. This work was published in London as par

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George B. Sowerby I (1788–1854) – Margarita Shell Specimens – Hand-coloured engraving (1822)

Dahlstroms Auctioneer

George B. Sowerby I (1788–1854) – Bulinus Shell Specimens – Hand-coloured engraving: "Bulinus" illustrates several species of terrestrial air-breathing snails, providing a detailed anatomical study of their varied shell shapes, from elongated and conical to more rounded forms. This wo

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George B. Sowerby I (1788–1854) – Bulinus Shell Specimens – Hand-coloured engraving

Dahlstroms Auctioneer

Late Cretaceous Fossil Egg Clutch Attributed to Troodon: North America or Siberia, Late Cretaceous period, ca. 77.5 to 76.5 million years ago. A clutch of eleven Troodon eggs, beautifully preserved in their reddish-brown matrix. The name Troodon refers to s

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Late Cretaceous Fossil Egg Clutch Attributed to Troodon

Artemis Fine Arts

Charles Henry Dessalines d'Orbigny (1806–1876) – Various Diptera Species: "Insectes. Diptères Pl. 2" illustrates five distinct species of flies, providing a detailed anatomical study of their wing venation, iridescent bodies, and varied abdominal patterns. The central figu

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Charles Henry Dessalines d'Orbigny (1806–1876) – Various Diptera Species

Dahlstroms Auctioneer

Albert de Grossouvre (1849–1932) – Study of an Ammonite Fossil – Lithograph (1894): "Pl. XXXIX". This lithograph presents two scientific views of a fossilized ammonite shell. The illustration on the left provides a lateral perspective showing the planispiral coiling and the intricate

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Albert de Grossouvre (1849–1932) – Study of an Ammonite Fossil – Lithograph (1894)

Dahlstroms Auctioneer

Large Ordovician Trilobite (Burmeisterella), Morocco: Morocco. Paleozoic Era, Ordovician Period, ca. 485-444 million years old. A well-preserved fossil trilobite identified as Burmeisterella, presented in strong relief with prominent cephalon, segmented

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Large Ordovician Trilobite (Burmeisterella), Morocco

Artemis Fine Arts

Assorted Trilobite Fossil Species in Ten Stone Matrices: North America / Africa, Morocco, Cambrian to Permian Period, ca. 520 to 251 million years ago. A collection of ten natural stone matrices featuring well-preserved full and partial trilobite remains. T

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Assorted Trilobite Fossil Species in Ten Stone Matrices

Artemis Fine Arts

Afghanistan Panjir Natural Emerald 0.67ct Square Cut: This certified natural emerald originates from the celebrated Panjir region of Afghanistan, a locality renowned for producing gemstones of exceptional color saturation and historical significance. Doc

Apr 26, 2026

Afghanistan Panjir Natural Emerald 0.67ct Square Cut

Chan & Scott Auction House

Est. $300-$600

Rare 37.75 ct Natural Emerald from Swat, Pakistan, Untreated, Minimal Oil: An exceptional and substantial natural emerald of 37.75 carats, originating from the Swat Valley in northern Pakistan, a region celebrated for producing vividly colored emeralds with notable historica

May 02, 2026

Rare 37.75 ct Natural Emerald from Swat, Pakistan, Untreated, Minimal Oil

Chan & Scott Auction House

Est. $8,500-$13,000

Cleoniceras sp. — Small Hematite Ammonite Pair in Box Frame: Cleoniceras sp. — Small Hematite Ammonite Pair in Box Frame A Small Hematite Ammonite Pair, beautifully presented in a handmade wooden box frame and mounted on high-quality, acid-free conservation b

Apr 28, 2026

Cleoniceras sp. — Small Hematite Ammonite Pair in Box Frame

Weatherham Estate Treasures

Est. $150-$250

Loose Lab Diamond - Emerald 1.54ct Fancy Vivid Blue VVS2: Loose Lab Diamond - Emerald 1.54ct Fancy Vivid Blue VVS2 Experience the rare beauty of a Fancy Vivid Blue lab diamond, boasting an exceptional 1.54ct cut with EX symmetry and polish, and a flawless VV

Apr 17, 2026

Loose Lab Diamond - Emerald 1.54ct Fancy Vivid Blue VVS2

Est. $2,025-$3,040

Authentic Campo del Cielo Meteorite Slab: "Authentic Meteorite – Campo del Cielo, Argentina Encapsulated and certified by the International Numismatic Bureau, this genuine space rock originates from the famous Campo del Cielo meteorite fiel

May 30, 2026

Authentic Campo del Cielo Meteorite Slab

Pop Culture Hobbies

Est. $100-$200

9.03 ct Natural Zambian Emerald of Intense Green Hue, Certified by Lotus: This exceptional 9.03 carat natural emerald, originating from Zambia and certified by Lotus Gemology (Report No. 5142-1687, dated 27 September 2022), presents an outstanding example of a high-carat ge

May 02, 2026

9.03 ct Natural Zambian Emerald of Intense Green Hue, Certified by Lotus

Chan & Scott Auction House

Est. $12,000-$25,000

Fiery Reddish-Orange Spessartite Garnet: Fiery Reddish-Orange Spessartite Garnet Add a burst of vivid color to your collection with this captivating Spessartite Garnet. Expertly shaped into a smooth pear cabochon, this loose gemstone displa

Apr 27, 2026

Fiery Reddish-Orange Spessartite Garnet

Weatherham Estate Treasures

Est. $500-$650

IGI Round 5.06ct F VVS2 Ideal Loose Lab Diamond: IGI Round 5.06ct F VVS2 Ideal Loose Lab Diamond Experience the brilliance of a lab-grown diamond, certified by IGI as a 5.06ct F VVS2 Ideal Round cut gemstone. With its exceptional clarity and polish,

Apr 25, 2026

IGI Round 5.06ct F VVS2 Ideal Loose Lab Diamond

Est. $9,660-$14,490

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