Lot 4064

Natural History - Ametrine Gemstone

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Rock, Crystal, Natural, Jewelry, Gemstone: Ametrine Gemstone 14.4ct

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Natural History Rock Crystal Quartz Stone Specimen: Nice example of transparent colorless form of quartz gemstone having an appearance of large chunks of shattered glass. No apparent markings. Dimensions: 10 X 11.25 X 4.5 in. Condition: Good overa

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Rock, Crystal, Natural, Jewelry, Gemstone: Ametrine Gemstone Brazil 1.79 carats

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Blue Sapphire Gemstone: A circular facetted pale sapphire specimen. 0.02 grams, 0.1ct, 2mm (1/4"). Property of a Norfolk, UK, gentleman; acquired on the natural history art market; from Sri Lanka. [No Reserve]

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Stunning 9.52 Cts Natural Ametrine: Gemstone : Natural AmetrineShape and Cut : Oval CutWeight : 9.52 caratsMeasurements : 17.60x13.82x6.17 mm Color : Purple YellowTransparency : TransparentTreatment : NonOrigin : Africa

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211.10Ct Ametrine 100%NATURAL FACET ROUGH SPECIMEN UNHEATED ROUGH Gemstones: Item Name:- Ametrine, Item weight in carat:-211.10, item Dimension(Size)in milimeter:- 41 mm, 35 mm, 21 mm, item creation :- Natural, item country of origin :- Bolivia, ITEM Treatment :- Not Enhanced,

2023211.10Ct Ametrine 100%NATURAL FACET ROUGH SPECIMEN UNHEATED ROUGH GemstonesSee Sold Price

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32.59 ct ametrine: Title: 32.59 ct ametrine Color/Clarity: TOP BI-COLOR PURPLE - YELLOW/IF Gemstone Type: natural/untreated Carat Weights: 32.59 Size/Dimensions: 23x11 mm Additional Information: TRILLION CUT WITH CHECKE

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George Edwards, A Natural History of Uncommon Birds WITH Gleanings of Natural History: EDWARDS, George (1694-1773). A Natural History of Uncommon Birds, and of Some Other Rare and Undescribed Animals, Quadrupeds, Reptiles, Fishes, Insects, &c.; WITH: Gleanings of Natural History. London

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Doughty's The Cabinet of Natural History, First Edition & Bradley Martin Copy: DOUGHTY, J[ohn] and T[homas] Doughty (19th Century). The Cabinet of Natural History, and American Rural Sports with Illustrations. Philadelphia: J. & T. Doughty, 1830-33. First Edition. Comparables: S

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[BUFFON, GEORGES-LOUIS LECLERC, COMTE DE. 1707-1788.] [Natural History]: [BUFFON, GEORGES-LOUIS LECLERC, COMTE DE. 1707-1788.] [Natural History] 4 vols., 6 x 4 in., mottled calf, comprising hand-colored engraved natural-history illustrations, the name of Leclerc de Buffon

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ALBIN (ELEAZAR) A Natural History of English Insects. Illustrated with a Hundred Copper Plates,...: ALBIN (ELEAZAR) A Natural History of English Insects. Illustrated with a Hundred Copper Plates, Curiously Engraven from Life: And (for those who desire it) Exactly Coloured by the Author, FIRST EDITIO

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Natural History - Fossil Mesosaurus Skeleton: Permian Period, 285 million years BP. A complete preserved Mesosaurus brasiliensis skeleton in limestone; from the Irati-Formation, Parana Delta, Brazil. 4.4 kg, 48cm x 33cm (19 x 13"). From an old Br

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Natural History - Fossil Claudiosaurus Skeleton: Late Permian-Early Triassic Period, circa 252-250 million years B.P. In an irregular matrix. 12.2 kg, 43 cm (17 in.). From Madagascar. From a Cambridgeshire, UK, collection.This lot has been checked a

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Natural History - Mud Lobster Fossil: Eocene Period, 58-36 million years BP. A fossil mud lobster (crayfish) Thalassina sp., in matrix. 87 grams, 14cm (5 1/2"). From an old Bristol paleontological collection; acquired 1950s-1960s; from Au

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Natural History - Fossil Cave Bear Paw: Devensian Period, 110,000-12,000 years B.P. Including the claws and bones, held together by an internal metal frame. 608 grams, 33 cm (13 in.). Ex Lincolnshire, UK, collection.

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(NATURAL HISTORY.) Imao Keinen. Keinen Kacho Gafu (Birds and Flowers of the Four Seasons).: (NATURAL HISTORY.) Imao Keinen. Keinen Kacho Gafu (Birds and Flowers of the Four Seasons). Profusion of kacho-e color woodblock plates. 4 volumes. Folio, 14¼x10 inches, publisher's printed stitch

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Item Details

Description

A very unusual gem of ametrine, half amethyst and half citrine of 11.10 carats, in an equally unusual step-cut. 2.18 grams, 18mm (1/2"). Property of a London lady, part of her family's Swiss collection; formerly acquired in the 1980s. Dr Bonewitz notes: 'Ametrine comes from a single source in Brazil, which is nearly exhausted. This stone is well-zoned, with the amethyst and citrine in equal halves of the stone.' [No Reserve]

Condition

Extremely fine condition.

Buyer's Premium

Natural History - Ametrine Gemstone

Name: Natural History - Ametrine Gemstone
SKU: 77083523
Price: 60 GBP
Availability: InStock

Estimate £60 - £80

See Sold Price

Starting Price £5

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Item located in Harwich, uk

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