Topaz with Feldspar

Divino das Laranjeiras, Doce Valley, Minas Gerais, Brazil

One of only two Topaz specimens I've ever seen from this locality (Topaz not even listed from here on MinDat!), this specimen captures a particular aesthetic comprising glassy, gemmy, blue topaz crystals on a creamy white feldspar matrix with tan highlights. The main Topaz is 4.2cm long, and doubly terminated like the others. The habit of these reminds me most of the sherry-colored Topaz crystals from the Thomas Range in Utah, USA. No damage save normal pocket contacts, including two of the smallest crystals near the edge.

#GC-011          $5,000

Beryl var. Aquamarine with Tourmaline var. Schorl

Erongo Mountain, Erongo Region, Namibia

6.3 X 4.1 X 3.9cm

Strongly balanced specimen comprising a 4.5cm tall, doubly terminated, moderately blue Aquamarine with a couple of other smaller crystals on a contrasting matrix of lustrous black Shorl. The top and bottom of the Aquamarine are gemmy with glassy terminations. The sides of the barrel are satiny, and there are inclusions of albite concentrated along the back and middle that help to enhance the normal blue color of crystals from this locality. There is one 2mm wide contacted area at the base of the Aquamarine, visible in the photo on the left if you look closely. Otherwise, one of the more aesthetically "perfect" specimens I'm privileged to offer!

#GC-009          $500

Tourmaline var. Uvite with Magnesite

Pomba pit, Serra das Éguas, Brumado, Bahia, Brazil

3.5 X 3.5 X 2.2cm

Glassy dark green crystals of Uvite up to 2.0cm across on a contrasting matrix of sparkling  magnesite crystals. The Uvite ranges from dark yellowish green to smaller sections that are grass green, translucent, and show a bit better than my photographs indicate. Ex. Lloyd Tate Collection. No damage.

#GC-003          $750

Tourmaline with Quartz

Stewart Mine, Tourmaline Queen Mountain, Pala, Pala District, San Diego County, California, USA

7.5 X 5.8 X 5.0cm

Older specimen with two tourmaline crystals partially intergrown with a lightly smokey quartz crystal. The larger tourmaline is 4.8cm long, and the smaller 1.9cm. The bases (with pocket damage) are black Schorl, but the upper 1.5cm of each consist of olive green, then a zone of greenish blue that grades upwards to to a vibrant green termination. The quartz crystal really serves as a crystalline matrix, as there is chatter along the terminations and a fractured zone where it separated from the pocket wall visible on the lower right of the main photo. I expect someone will cut the gemmy crystal tips from this piece eventually, as they probably have more value as jewels than I'm asking for the entire piece, but it won't be me who cuts it!!!

#GC-005          $375

Tourmaline with Feldspar

Black Top / Black Cap Pocket, Himalaya Mine, Gem Hill, Mesa Grande District, San Diego County, California, USA

2.2 X 2.0 X 1.1cm

An undamaged 1.9cm crystal of polychromatic gem tourmaline with white feldspar.  The color of the tourmaline ranges from soft pink near the base through pale green to a pale grayish blue just below the black cap.  This is NOT a typical Himalaya tourmaline!

#GC-006          $125

Tourmaline

Pederneira Claim, São José da Safira, Doce Valley, Minas Gerais, Brazil

7.1 X  3.2  X 2.8cm

Polychromatic "watermelon" Tourmaline cluster, gemmy with glassy luster. Interstingly, the smaller crystals show pink cores with a greenish blue jacket and flat pinacoidal terminations, while the large crystal shows a greenish blue barrel with a more complex, olive green termination. This originally had a small "repaired" sticker on its base that was consistent with specimens prepared by Collector's Edge from their major efforts, but it has since come off. Still, I assume this is a repaired specimen, as most from Pederneira are. Regardless, stunning for the size!

#GC-002          $3,000

Tourmaline with Quartz and Feldspar

Mogok Township, Pyin-Oo-Lwin District, Mandalay Division, Myanmar

6.5 X 5.3 X 4.0cm

For my tastes, this is by far the best of these "mushroom" Tourmalines I've witnessed, whether in person, on the web, or in print. The composition is nearly impeccable, with zoned and sceptered Tourmaline crystals growing through and out of slightly yellowish smokey Quartz crystals (these could be called Citrine, and one is doubly terminated!) with accenting white Feldspar crystals. The photos clearly show the paragenesis with early black (Schorl) Tourmaline with a later "bloom" of pink Tourmaline epimorphing the relatively thin Schorls. The "bloom" is what we call the "mushroom" for most specimens from here.

#GC-001          $3,250

Topaz with Quartz

Gilgit, Gilgit District, Gilgit-Baltistan, Pakistan

4.4 X 4.3 X 2.5cm

A razor sharp, water clear, doubly terminated topaz measuring 2.9cm on its longest axis standing on a nest of three smokey quartz crystals with accents of albite and muscovite. The quartz at the top is doubly terminated. The quartz crystals have very small chips at their tips, and there is normal contacting on the back and base where the specimen separated from the pocket.  The topaz contains wispy internal veils that, along with its clarity, transmit, refract, and reflect so much light it is difficult to photograph precisely.

#GC-012          $175

Tourmaline

Stewart Mine, Tourmaline Queen Mountain, Pala, Pala District, San Diego County, California, USA

3.1 X 1.4 X 1.1cm

Well-terminated, bent (i.e. separated during mineralization and rehealed, in this case showing reverse-growth features) crystal of gemmy pink Tourmaline from a famous California pegmatite locality. The luster ranges from satiny to glassy, and smaller crystals of Tourmaline and Lepidolite dance along one of the sides. No damage except where the crystal separated at its base from the pocket wall.

#GC-004          $175

14 Specimens added June 15, 2016

Spinel

Marble Occurrence, Morogoro, Uluguru Mountains, Morogoro Region, Tanzania

4.5 X 3.7 X 3.8cm

A large, well-formed, and color-saturated Spinel with greenish to purplish gray accents of probably Scapolite. The color ranges from a soft pink to a deep reddish pink similar to the best rhodochrosites, and there is marked translucency throughout. The crystal shows some complex growth, but is undamaged and a complete bipyramid except for the areas where it is intergrown with the presumed Scapolite.

#GC-014          $750

Topaz with Albite

Dache, Haramosh Mountains, Gilgit District, Gilgit-Baltistan, Pakistan

6.5 X 6.5 X 3.7cm

An aerial presentation of very pale sherry colored topaz crystals grown on and around sprays of white albite. An essential floater, the only "damage" occurred in the pocket during formation, with one larger and a few smaller topaz crystals broken and then rehealed during the mineralizing event. The main topaz measures 3.1cm on its longest axis, and it and the other smaller topaz crystals show no damage.

#GC-013          $275

Tourmaline with Quartz and Lepidolite

Paprok, Kamdesh District, Nuristan Province, Afghanistan

7.2 X 3.8 X 2.5cm

A 3.0cm long, perfectly terminated and completely gemmy tourmaline perched on a 7.2cm long doubly terminated smokey quartz  with accents of lepidolite and a smaller partial tourmaline. It can be displayed with the smaller tourmaline in front; it is broken from the pocket on its pink base, and strongly intergrown and contacted with lepidolite at its green top. It can also be displayed from the opposite side, where the larger green tourmaline  goes to a vibrant "electric" green toward the base where it separated from the pocket.

#GC-007          $1,500

Topaz with Albite and Quartz

Nujiang Valley, Nujiang Autonomous Prefecture, Yunnan Province, China

8.2 X 7.0 X 6.0cm

A monolithic Topaz rises more than 4.0cm from an embracing matrix of ivory Albite on a completely rehealed, floater crystal of Smokey Quartz. The clear gem Topaz is lightly frosted on the top terminations, glassy on the sides, and measures 4.0 X 4.5 X 3.3cm. There is a very small, rehealed disruption along one of the crystal edges, visible in the photo on the left, otherwise the specimen is essentially in pristine condition. Comes with a custom-made lucite base.

#GC-010          $3,500

GEM CRYSTALS I

Beryl var. Aquamarine with Muscovite

Chumar Bakhoor, Hunza Valley, Gilgit District, Gilgit-Baltistan, Pakistan

6.0 X 4.9 X 3.5cm

Classic example from Chumar Bakhoor with the definitive composition of ultra-glassy, see-through gemmy, pale blue Aquamarine crystals to 2.2cm long on silvery Muscovite. No damage. Back is sculpturaly sawn.

#GC-008          $175