![Optical Calcite Mineral Specimen Collection: A group of ten optical calcite specimens, each held in a white card collector's tray. 170 grams total, 18-22 mm (5/8 - 7/8 in.). [10, No Reserve] Durango, Mexico. Mineral Imports, London, UK. Gregory,](https://p1.liveauctioneers.com/1191/415806/231335347_1_x.jpg?height=280&quality=70&sharpen=true&version=1777475205&width=280)
Est. £20-£30
TimeLine Auctions Ltd.Harwich, Essex
Est. $10-$10,000
Gold Standard AuctionsDallas, TX
![Group of Thirty Three [33] Boxed Mexican Calcite and Other Crystal Specimens: Boxed group comprising orange and pink calcite from Mexico, fluorite, white to colourless calcite from Mexico, and quartz. 1.62 kg total including box, 21-75 mm (3/4 - 3 in.). [No Reserve] From Mexico](https://p1.liveauctioneers.com/1191/415806/231335486_1_x.jpg?height=280&quality=70&sharpen=true&version=1777475205&width=280)
Est. £40-£60
TimeLine Auctions Ltd.Harwich, Essex
![Group of Twenty Four [24] Boxed Orange Calcite Mineral Specimens: Boxed group of irregular specimens showing vitreous lustre, each in a labelled display tray. 1.23 kg total, 33-48 mm (1 1/4 - 1 7/8 in.). [No Reserve] From Mexico. Ex Mineral Imports, London, UK. Greg](https://p1.liveauctioneers.com/1191/415806/231335504_1_x.jpg?height=280&quality=70&sharpen=true&version=1777475205&width=280)
Est. £30-£40
TimeLine Auctions Ltd.Harwich, Essex
![Group of Twenty [20] Large Pink-Orange Calcite Mineral Specimens: Boxed group of irregular specimens showing vitreous lustre. 5.01 kg total including box, 6.2-11.1 cm (2 1/2 - 4 3/8 in.). [No Reserve] From Mexico. Ex Mineral Imports, London, UK. Gregory, Bottley & L](https://p1.liveauctioneers.com/1191/415806/231335413_1_x.jpg?height=280&quality=70&sharpen=true&version=1777475205&width=280)
Est. £30-£40
TimeLine Auctions Ltd.Harwich, Essex
![Group of Forty-Six [46] Boxed and Mounted Calcite Rhomb Mineral Specimens: A boxed group of rhomboidal, transparent specimens in labelled display trays. 785 grams total including box, 20-34 mm (3/4 - 1 3/8 in.). [46, No Reserve] From Mexico. Ex Mineral Imports, London, UK. G](https://p1.liveauctioneers.com/1191/415806/231335337_1_x.jpg?height=280&quality=70&sharpen=true&version=1777475205&width=280)
Est. £30-£40
TimeLine Auctions Ltd.Harwich, Essex
![Pink Icelandic Spar Mineral Specimen Group: A group of fourteen pink Icelandic spar mineral specimens; each held in a white card collector's tray. 160 grams total, 16-23 mm (3/4 - 1 in.). [14, No Reserve] Nuevo Leon, Mexico. Mineral Imports, Lo](https://p1.liveauctioneers.com/1191/415806/231335321_1_x.jpg?height=280&quality=70&sharpen=true&version=1777475205&width=280)
Est. £20-£30
TimeLine Auctions Ltd.Harwich, Essex
Est. $10-$10,000
Gold Standard AuctionsDallas, TX
![Group of Twenty One [21] Boxed Mexican Pyrite 'Fool's Gold' Crystal Specimens: Boxed group of pyrite specimens, each within a labelled specimen tray and some with accessory minerals. 1.21 kg total including box, 29-49 mm (1 1/8 - 2 in.). [No Reserve] From Mexico. Ex Mineral Impo](https://p1.liveauctioneers.com/1191/415806/231335366_1_x.jpg?height=280&quality=70&sharpen=true&version=1777479005&width=280)
Est. £40-£60
TimeLine Auctions Ltd.Harwich, Essex
![Group of One Hundred and Eighty [180] Mexican Pyrite 'Fool's Gold' Crystal Specimens: Boxed group of irregular nuggets of pyrite showing metallic lustre. 5.99 kg total including box, 23-42 mm (1 - 1 5/8 in.). [No Reserve] From Mexico. Ex Mineral Imports, London, UK. Gregory, Bottley &](https://p1.liveauctioneers.com/1191/415806/231335391_1_x.jpg?height=280&quality=70&sharpen=true&version=1777479005&width=280)
Est. £40-£60
TimeLine Auctions Ltd.Harwich, Essex
![Group of One Hundred [100] Blue Calcite Mineral Specimens: A large group of light blue calcite specimens from Mexico. 1.06 kg total, 10-35 mm (3/8 - 1 3/8 in.). [100, No Reserve] Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's), Harwich, U](https://p1.liveauctioneers.com/1191/415806/231335329_1_x.jpg?height=280&quality=70&sharpen=true&version=1777475205&width=280)
Est. £20-£30
TimeLine Auctions Ltd.Harwich, Essex
![Three Hundred and Fifty Eight [358] Mahogany Obsidian Mineral Specimens: Boxed group of chocolate brown irregular specimens. 2.35 kg total including box, 16-46 mm (5/8 - 1 3/4 in.). [No Reserve] From Mexico. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory](https://p1.liveauctioneers.com/1191/415806/231335409_1_x.jpg?height=280&quality=70&sharpen=true&version=1777475205&width=280)
Est. £30-£40
TimeLine Auctions Ltd.Harwich, Essex
![A Very Large Quantity of Durango Apatite Crystal Specimens: Mainly comprising pale yellow hexagonal crystal sections, some showing red to brown colours. 1.01 kg total including box, 6-20 mm (1/4 - 3/4 in.). [No Reserve] From Mexico. Ex Mineral Imports, London,](https://p1.liveauctioneers.com/1191/415806/231335398_1_x.jpg?height=280&quality=70&sharpen=true&version=1777475205&width=280)
Est. £40-£60
TimeLine Auctions Ltd.Harwich, Essex
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