Results for “Geode Mineral”

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LARGE CATHEDRAL BOLIVIAN AMETHYST CRYSTAL GEODE WITH BLUE AGATE: A light lavender amethyst geode cathedral featuring a natural basalt outer shell with gray and blue agate banding. The interior displays light lavender druzy quartz with small black mineral inclusions

Jun 11, 2026

LARGE CATHEDRAL BOLIVIAN AMETHYST CRYSTAL GEODE WITH BLUE AGATE

Est. $200-$300

$100

Dan Morphy AuctionsDenver, PA

AMETHYST GEODE CRYSTAL QUARTZ CLUSTER SPECIMEN: A large hand carved Natural Amethyst Crystal Quartz Mineral specimen. Deep purple cathedral Amethyst geode. The cluster is a natural formation of amethyst, with multiple crystal points radiating from

May 23, 2026

AMETHYST GEODE CRYSTAL QUARTZ CLUSTER SPECIMEN

Est. $50-$80

$50

Antique Arena Inc.Brooklyn, NY

Amethyst Gem Tree on Amethyst Crystal Geode Section: Irregular geode matrix with light purple amethyst crystals; the metal branches tipped with polished light-coloured amethyst pebbles. 385 grams, 19 cm (7 1/2 in.). [No Reserve] From Brazil. Ex Mineral

Jun 06, 2026

Amethyst Gem Tree on Amethyst Crystal Geode Section

Est. £20-£30

£5

TimeLine Auctions Ltd.Harwich, Essex

Polished Mineral Specimen Ornaments, 2: Two Polished Mineral Specimen Ornaments, an amethyst geode and a carved malachite vide poche. Larger: 1.5" H x 5" W x 5" D. Provenance: The Estate of Gilbert C. Maurer, Director and Former COO of Hear

Jun 18, 2026

Polished Mineral Specimen Ornaments, 2

Est. $300-$500

$100

Auctions at ShowplaceAstoria, NY

Citrine Gem Tree on Amethyst Crystal Geode Section: Irregular geode matrix with light purple amethyst crystals; the metal branches tipped with polished light-coloured citrine pebbles. 479 grams, 20 cm (7 7/8 in.). [No Reserve] From Brazil. Ex Mineral I

Jun 06, 2026

Citrine Gem Tree on Amethyst Crystal Geode Section

Est. £20-£30

£5

TimeLine Auctions Ltd.Harwich, Essex

Mixed Cut and Polished Agate Half Geode Group [10]: Comprising ten cut geode halves showing crystalline centres. 1.66 kg total, 4.7-10.7 cm (1 7/8 - 4 1/4 in.). [20, No Reserve] From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gre

Jun 06, 2026

Mixed Cut and Polished Agate Half Geode Group [10]

Est. £30-£40

£5

TimeLine Auctions Ltd.Harwich, Essex

Citrine Gem Tree on Amethyst Crystal Geode Section: Irregular geode matrix with light purple amethyst crystals; the metal branches tipped with polished light-coloured citrine pebbles. 475 grams, 19 cm (7 1/2 in.). [No Reserve] From Brazil. Ex Mineral I

Jun 06, 2026

Citrine Gem Tree on Amethyst Crystal Geode Section

Est. £20-£30

£5

TimeLine Auctions Ltd.Harwich, Essex

Set of Three [3] Cut and Polished 'Eye' Agate Geode Slices: Comprising three transparent slices from the same geode showing an eye-like pattern. 155 grams total, 13.5-14 cm (5 1/4 - 5 1/2 in.). [3, No Reserve] From Brazil. Ex Mineral Imports, London, UK. Grego

Jun 06, 2026

Set of Three [3] Cut and Polished 'Eye' Agate Geode Slices

Est. £20-£30

£5

TimeLine Auctions Ltd.Harwich, Essex

Citrine Gem Tree on Amethyst Crystal Geode Section: Irregular geode matrix with light purple amethyst crystals; the metal branches tipped with polished light-coloured citrine pebbles. 510 grams, 20 cm (7 3/4 in.). [No Reserve] From Brazil. Ex Mineral I

Jun 06, 2026

Citrine Gem Tree on Amethyst Crystal Geode Section

Est. £20-£30

£5

TimeLine Auctions Ltd.Harwich, Essex

Quartz Gem Tree on Amethyst Crystal Geode Section: Irregular geode matrix with light purple amethyst crystals; the metal branches tipped with polished quartz pebbles. 600 grams, 17 cm (6 5/8 in.). [No Reserve] From Brazil. Ex Mineral Imports, London,

Jun 06, 2026

Quartz Gem Tree on Amethyst Crystal Geode Section

Est. £20-£30

£5

TimeLine Auctions Ltd.Harwich, Essex

Collection of Three [3] Cut and Polished Agate Geode Ends: A boxed group of three polished geode sections showing contrasting colours and banding. 2.77 kg total, 9.6-19.6 cm (3 3/4 - 7 3/4 in.). [3, No Reserve] Ex Mineral Imports, London, UK. Gregory, Bottley

Jun 06, 2026

Collection of Three [3] Cut and Polished Agate Geode Ends

Est. £40-£60

£5

TimeLine Auctions Ltd.Harwich, Essex

Group of Seventy [70] Amethyst Crystal Geode Sections: Boxed group of dark to light purple amethyst crystals on geode sections. 3.96 kg total including box, 10-74 mm (3/8 - 2 7/8 in.). [No Reserve] From Brazil. Ex Mineral Imports, London, UK. Gregory, Bot

Jun 06, 2026

Group of Seventy [70] Amethyst Crystal Geode Sections

Est. £30-£40

£5

TimeLine Auctions Ltd.Harwich, Essex

Large Group of Four Hundred [400] Cut and Polished Mini Geode Halves: Comprising four bags of mini geodes showing crystal-lined cavities. 3.28 kg total, 17-50 mm (5/8 - 2 in.). [No Reserve] From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gregory's

Jun 06, 2026

Large Group of Four Hundred [400] Cut and Polished Mini Geode Halves

Est. £50-£70

£5

TimeLine Auctions Ltd.Harwich, Essex

Group of Twenty [20] Cut and Polished Agate Geode Slices: Comprising twenty transparent to translucent slices, some with a crystalline centre, four dyed. 560 grams total, 5.5-10.8 cm (2 1/8 - 4 1/4 in.). [20, No Reserve] Ex Mineral Imports, London, UK. Grego

Jun 06, 2026

Group of Twenty [20] Cut and Polished Agate Geode Slices

Est. £30-£40

£5

TimeLine Auctions Ltd.Harwich, Essex

Collection of Fourteen [14] Amethyst Crystal Geode Display Peaces: Boxed group of light to dark purple amethyst crystals on a matrix, one with crystals formed around a stalagmite. 2.78 kg total including box, 5.1-13 cm (2 - 5 1/8 in.). [14, No Reserve] Ex Mineral Imp

Jun 06, 2026

Collection of Fourteen [14] Amethyst Crystal Geode Display Peaces

Est. £80-£100

£5

TimeLine Auctions Ltd.Harwich, Essex

Quartz Gem Tree on Amethyst Crystal Geode Section: Irregular geode matrix with light purple amethyst crystals; the metal branches tipped with polished quartz pebbles. 520 grams, 19.5 cm (7 5/8 in.). [No Reserve] From Brazil. Ex Mineral Imports, London

Jun 06, 2026

Quartz Gem Tree on Amethyst Crystal Geode Section

Est. £20-£30

£5

TimeLine Auctions Ltd.Harwich, Essex

Group of Ten [10] Cut and Polished Agate Geode Slices: Comprising ten translucent slices of agate showing attractive banding, one a moss agate slice. 666 grams total, 8.1-13.2 cm (3 1/4 - 5 1/4 in.). [No Reserve] From Brazil. Ex Mineral Imports, London, U

Jun 06, 2026

Group of Ten [10] Cut and Polished Agate Geode Slices

Est. £30-£40

£5

TimeLine Auctions Ltd.Harwich, Essex

Collection of Twenty [20] Cut and Polished Agate Geode Slices: Comprising twenty translucent polished slices, some showing crystalline areas, some dyed. 415 grams total, 5-11.9 cm (2 - 4 3/4 in.). [20, No Reserve] Ex Mineral Imports, London, UK. Gregory, Bottley

Jun 06, 2026

Collection of Twenty [20] Cut and Polished Agate Geode Slices

Est. £30-£40

£5

TimeLine Auctions Ltd.Harwich, Essex

One Hundred and Thirty [130] Amethyst Crystal Geode Sections: Boxed group of amethyst geode sections in various sizes, showing well-formed light purple crystals. 2.65 kg total including box, 18-52 mm (3/4 - 2 in.). [130, No Reserve] Ex Mineral Imports, London, U

Jun 06, 2026

One Hundred and Thirty [130] Amethyst Crystal Geode Sections

Est. £30-£40

£5

TimeLine Auctions Ltd.Harwich, Essex

Collection of Ten [10] Cut and Polished Assorted Agate Geode Halves: Comprising ten geode halves with internal cavities, most with crystal lining. 1.43 kg total, 52-94 mm (2 - 3 3/4 in.). [10, No Reserve] From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley &

Jun 06, 2026

Collection of Ten [10] Cut and Polished Assorted Agate Geode Halves

Est. £30-£40

£5

TimeLine Auctions Ltd.Harwich, Essex

Group of Ten [10] Cut and Polished Coloured Crystal Geode Halves: Each with a polished cut face and showing a crystal-lined centre; mostly dyed. 1.47 kg total, 60-84 mm (2 3/8 - 3 1/4 in.). [10, No Reserve] From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottl

Jun 06, 2026

Group of Ten [10] Cut and Polished Coloured Crystal Geode Halves

Est. £30-£40

£5

TimeLine Auctions Ltd.Harwich, Essex

Collection of Seventy Three [73] Boxed and Unboxed Amethyst Crystal Geode Display Pieces: Boxed group of light to dark purple amethyst crystal specimens, including some on matrix. 1.95 kg total including box, 16-66 mm (5/8 - 2 5/8 in.). [No Reserve] From Brazil. Ex Mineral Imports, London,

Jun 06, 2026

Collection of Seventy Three [73] Boxed and Unboxed Amethyst Crystal Geode Display Pieces

Est. £30-£40

£5

TimeLine Auctions Ltd.Harwich, Essex

Collection of Ten [10] Cut and Polished Agate Geode Slices: Comprising ten translucent slices, some with crystalline areas. 1.02 kg total, 9.8-18.5 cm (3 7/8 - 7 1/4 in.). [3, No Reserve] From Brazil. Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (G

Jun 06, 2026

Collection of Ten [10] Cut and Polished Agate Geode Slices

Est. £40-£60

£5

TimeLine Auctions Ltd.Harwich, Essex

Collection of Six [6] Cut and Polished Agate Geode End Pieces: Comprising six freestanding sections, three with enhanced dyed colouring. 3.05 kg total, 10.4-14.8 cm (4 1/8 - 5 7/8 in.). [6, No Reserve] Ex Mineral Imports, London, UK. Gregory, Bottley & Lloyd (Gre

Jun 06, 2026

Collection of Six [6] Cut and Polished Agate Geode End Pieces

Est. £40-£60

£5

TimeLine Auctions Ltd.Harwich, Essex

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