David K. Joyce

REDUCED -Various International, 40 Percent Off

Deduct 40% from the listed price and an additional 20% for payment in US$!

All prices in Canadian dollars. For payment in US$, deduct 21% or multiply by 0.79.

Click on any of the following thumbnails to view a larger image of the specimen.

Topaz, QuartzREDUCED -Various International, 40 Percent Off
  • Item #13302
  • Topaz, Quartz
  • 7.5x5.7x7.0 cm
  • Largest Crystal Size: 12mm
  • $170.00
  • Schneckenstein
  • Kielberg, Vogtland, Saxony
    Germany
  • Here is an old classic! This thick plate of layered rock has two superb topaz crystals on the top amongst many colourless quartz crystals. The topaz crystals are a very light yellowish colour which makes them easy to see amongst the quartz. Very nice!
Proustite, polybasiteREDUCED -Various International, 40 Percent Off
  • Item #3863
  • Proustite, polybasite
  • 4.3x2.5x2.4 cm
  • Largest Crystal Size: 3mm
  • $65.00
  • Imiter Mine, Imiter District
  • Djebel Saghro (Jbel Saghro), Ouarzazate Province
    Morocco
  • Some thick, deep red, well formed proustite crystals are nicely perched on this matrix of galena and rock. There are some feathery polybasite crystals present, as well.
Proustite, PolybasiteREDUCED -Various International, 40 Percent Off
  • Item #3872
  • Proustite, Polybasite
  • 5.1x4.4x2.8 cm
  • Largest Crystal Size: 1.5mm
  • $70.00
  • Imiter Mine, Imiter District
  • Djebel Saghro (Jbel Saghro), Ouarzazate Province
    Morocco
  • Lots of beautiful, cherry-red proustite crystals are scattered around this cavernous, rotten galena matrix. There are also some very good polybasite crystals present.
MontebrasiteREDUCED -Various International, 40 Percent Off
  • Item #7693
  • Montebrasite
  • 6.2x2.2x0.7 cm
  • Largest Crystal Size: as above
  • $60.00
  • Fazenda Pomeroli, Linopolis District
  • Divino das Laranjeiras, Minas Gerais
    Brazil
  • This crystal is a twin with a re-entrant angle running down it's left side. It has modest lustre and well-formed crystal faces. A little bit of the tip of the crystal is missing. A very good example of this unusual mineral.
VanadiniteREDUCED -Various International, 40 Percent Off
  • Item #7729
  • Vanadinite
  • 3.8x2.5x2.3 cm
  • Largest Crystal Size: 20mm
  • $80.00
  • Mibladen
  • Tafilalet
    Morocco
  • If te bottom bit of rock was trimmed off, this would be a killer "thumbnail" specimen. It has a larger deep orange-red vanadinite crystal out front with some smaller crystals offset behind it. Good looking piece.
DatoliteREDUCED -Various International, 40 Percent Off
  • Item #8397
  • Datolite
  • 4.1x4.0x2.3 cm
  • Largest Crystal Size: 16mm
  • $75.00
  • La Baja Mine
  • Charcas, San Louis de Potosi
    Mexico
  • A gorgeous cluster of light green transluscent, lustrous datolite crystals with some small white, associated danburite crystals. The crystals are very well formed. Nice cluster!
MimetiteREDUCED -Various International, 40 Percent Off
  • Item #8404
  • Mimetite
  • 5.8x4.9x4.6 cm
  • Largest Crystal Size: n/a
  • $90.00
  • San Antonio Mine
  • Santa Eulalia
    Mexico
  • A superb cluster of botryoidal balls of beigy mimetite. The balls are composed of tightly packed crystals of mimetite and are very good quality. Classic. Displays well.
fluorapatite, Quartz var ChalcedonyREDUCED -Various International, 40 Percent Off
  • Item #13447
  • fluorapatite, Quartz var Chalcedony
  • 6.0x3.9x2.5 cm
  • Largest Crystal Size: 22mm
  • $40.00
  • Cerro del Mercado
  • Durango
    Mexico
  • A really nice, gemmy yellow fluorapatite crystal partially embedded in interlocking quartz crystals, coloured red by hematite. Interestingly, there is a growth of chalcedony on the front of the specimen, as well. Sawn back. Displays very well.
FluorapatiteREDUCED -Various International, 40 Percent Off
  • Item #13443
  • Fluorapatite
  • 6.4x4.5x4.0 cm
  • Largest Crystal Size: 20mm
  • $40.00
  • Cerro del Mercado
  • Durango
    Mexico
  • A thick, prismatic, terminated, deep yellow fluorapatite crystal miraculously protrudes out of chalcedony on this specimen. Sawn base. Displays well!
FluorapatiteREDUCED -Various International, 40 Percent Off
  • Item #13421
  • Fluorapatite
  • 3.8x2.7x3.6 cm
  • Largest Crystal Size: 20mm
  • $35.00
  • Cerro de Mercado
  • Durango
    Mexico
  • A very gemmy, yellow fluorapatite crystal partially embedded in pure white calcite. Some of the calcite has been etched away to reveal a botryoidal silicate that looks sort of like opal. Very interesting!
DatoliteREDUCED -Various International, 40 Percent Off
  • Item #13411
  • Datolite
  • 5.1x4.1x3.7 cm
  • Largest Crystal Size: 22mm
  • $35.00
  • Charcas
  • San Luis Potosi
    Mexico
  • Very nice cluster of light green, sharp, lustrous datolite crystals. A little No associated minerals, just datolite!
DatoliteREDUCED -Various International, 40 Percent Off
  • Item #13412
  • Datolite
  • 5.6x5.6x2.4 cm
  • Largest Crystal Size: 31mm
  • $40.00
  • Charcas
  • San Luis Potosi
    Mexico
  • A very nice cluster of light green, lustrous datolite crystals with a little included chalcopyrite. Nice miniature!
Cassiterite, QuartzREDUCED -Various International, 40 Percent Off
  • Item #13333
  • Cassiterite, Quartz
  • 3.8x3.8x2.1 cm
  • Largest Crystal Size: 12mm
  • $50.00
  • San Antonio Mine
  • Chambillaya, Quime, Inquisivi, La Paz
    Bolivia
  • A cluster of nice, sharp, very dark, lustrous cassiterite crystals with a little quartz. Sharp!
Cassiterite, Tourmaline, QuartzREDUCED -Various International, 40 Percent Off
  • Item #13328
  • Cassiterite, Tourmaline, Quartz
  • 9.2x4.2x3.0 cm
  • Largest Crystal Size: 10mm
  • $75.00
  • San Antonio Mine
  • Chambillaya, Quime, Inquisivi, La Paz
    Bolivia
  • Extremely sharp, well formed and lustrous cassiterite crystals are scattered amongst tourmaline impregnated quartz crystals on this specimen. Displays particularly well from the side.
Cassiterite, Tourmaline, QuartzREDUCED -Various International, 40 Percent Off
  • Item #13327
  • Cassiterite, Tourmaline, Quartz
  • 5.1x5.1x1.4 cm
  • Largest Crystal Size: c-6mm, q-16mm
  • $45.00
  • San Antonio Mine
  • Chambillaya, Quime, Inquisivi, La Paz
    Bolivia
  • A sharp looking specimen showing a plate of tourmaline-pierced quartz crystals and scattered dark, lustrous cassiterite crystals. Striking!
Cassiterite, Tourmaline, QuartzREDUCED -Various International, 40 Percent Off
  • Item #13326
  • Cassiterite, Tourmaline, Quartz
  • 3.7x3.5x1.9 cm
  • Largest Crystal Size: 9mm
  • $40.00
  • San Antonio Mine
  • Chambillaya, Quime, Inquisivi, La Paz
    Bolivia
  • A really nice 9mm crystal of dark brown cassiterite is well exposed on a bed of white quartz crystals. The cassiterite crystal is really nice but does have a slight ding which causes the price of the specimen to be lower than you might expect. Looks great!
Cassiterite, Tourmaline, QuartzREDUCED -Various International, 40 Percent Off
  • Item #13325
  • Cassiterite, Tourmaline, Quartz
  • 6.6x3.6x1.5 cm
  • Largest Crystal Size: 9mm
  • $50.00
  • San Antonio Mine
  • Chambillaya, Quime, Inquisivi, La Paz
    Bolivia
  • Several sharp, dark brown, lustrous cassiterite crystals are scattered on this arc or quartz crystals, partially impregnated with greenish-grey tourmaline group needles.
Cassiterite, Tourmaline, QuartzREDUCED -Various International, 40 Percent Off
  • Item #13315
  • Cassiterite, Tourmaline, Quartz
  • 8.2x6.1x2.2 cm
  • Largest Crystal Size: 10mm
  • $55.00
  • San Antonio Mine
  • Chambillaya, Quime, Inquisivi, La Paz
    Bolivia
  • A plate of lustrous, sharp, dark brown cassiterite crystals, mostly at the back associated with quartz crystals and lots of needle-like tourmaline at the front of the specimen.
CalciteREDUCED -Various International, 40 Percent Off
  • Item #10310
  • Calcite
  • 5.1x4.4x3.3 cm
  • Largest Crystal Size: 31mm
  • $35.00
  • Kjorholt Mine
  • Brevik
    Norway
  • A large, terminated greyish calcite crystal sits up alongside a number of smaller crystals. The calcite crystal is an hexagonal prism with rhombohedron termination. Some tiny pyrite crystal associated. Looks good!
CalciteREDUCED -Various International, 40 Percent Off
  • Item #10314
  • Calcite
  • 8.8x6.8x2.7 cm
  • Largest Crystal Size: as above
  • $75.00
  • Dalen-Kjorholt Mine, Level 152
  • Brevik
    Norway
  • A strange-looking aggregate of very flattenned rhombohedra of calcite. The crystals have a clear inner zone that is kind of curved with ci=urved growth features. They have a frosted outer zone that is more classic with straighter rhombohedral faces. Slight bruising. Unique!
CalciteREDUCED -Various International, 40 Percent Off
  • Item #10317
  • Calcite
  • 9.3x7.5x3.8 cm
  • Largest Crystal Size: 89mm
  • $100.00
  • Dalen-Kjorholt Mine, Level 152
  • Brevik
    Norway
  • A very unique cluster of crystals mainly consisting of a larger, flattened, zoned rhombohedral crystal. The crystal has a clear, colourless inner zone and a frosted, rhombohedral outer zone with some similar vintage, hexagonal-looking overgrowths. Very slight bruising. Unique and beautiful piece!
Xenotime-(Y), Hematite, RutileREDUCED -Various International, 40 Percent Off
  • Item #17217
  • Xenotime-(Y), Hematite, Rutile
  • 3.1x2.8x1.5 cm
  • Largest Crystal Size: x-2.0mm
  • $45.00
  • Novo Horizonte
  • Bahia
    Brazil
  • There are several sharp, well terminated xenotime crystals on this specimen. The matrix for the xenotime is composed of interlocking brilliantly lustered hematite crystals with oriented rutile crystals.
Xenotime-(Y), Hematite, RutileREDUCED -Various International, 40 Percent Off
  • Item #17221
  • Xenotime-(Y), Hematite, Rutile
  • 3.1x2.6x2.3 cm
  • Largest Crystal Size: x-2mm
  • $45.00
  • Novo Horizonte
  • Bahia
    Brazil
  • There are several sharp, xenotime crystals here and there on this matrix of interlocking hematite crystals with oriented rutile on them.
Xenotime-(Y), Hematite, RutileREDUCED -Various International, 40 Percent Off
  • Item #17222
  • Xenotime-(Y), Hematite, Rutile
  • 4.0x2.5x0.8 cm
  • Largest Crystal Size: x-2mm
  • $55.00
  • Novo Horizonte
  • Bahia
    Brazil
  • A really nice, doubly terminated xenotime crystal is located at the edge of this large lustrous, partial hematite crystal. Nice crystal!