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|Collector Gemstones, Rare Gemstones For Sale: Anorthite, Axinite, Bastnaesite, Brazilianite, chrome diopside, Cyprine, Danburite, Datulite, Diaspore, Enstatite, Epidote, Euchlase, Eudyalite, Fluorite, Kornerupine, Kyanite, Lapis, Montebrasite, Phenacie, Pollucie, Prehnite, Rutaliated Quartz, Scheelite, Sillimanite, Smithsonite, Sphalerite, Sphene, Staurolite, Triplyllite, Viridine, Xenotine|
|Gemstone ListCodingTerms & ConditionsHow to Order|
|SOLD. Amethyst, light reddish-violet. 30.43 ct, symmetrical freeform cut, eye-clean (EC). Halleleujah Junction, Nevada. Here's a pretty collectors' item gem from a rare American locality, the famous Halleleujah Junction, on the Nevada/California state line. These often occur as large scepter heads on smoky quartz stems, and can sometimes contain large gem areas. In fact, we've cut clean stones almost 350 cts in size from some of these, some of the largest to ever come from No. America! They always seem to have that beautiful pink overtone, but you have to cut out any smoky zones in order to keep them from looking a little muddy. This is probably the prettiest one I've had. (Stock #AMPB-3043) Priced at only $15/ct. $456.45|
|Bastnaesite, medium golden-brown, Pakistan. 1.79 cts., 6x7.6 mm pear shape, VSI. Bastnaesite is a rare fluorocarbonate of cerium metals found in pegmatites in Russia, Sweden, Colorado, etc. The only gem material I am aware of comes from a recent find in Pakistan. $258.00 (Stock #BAGP-0179)|
|Bastnaesite, slightly reddish-brown, Pakistan. 1.66 ct triad shape, 5.6x6.5 mm, EC. A rare mineral, and even more rare in facet grade. It has a hardness of 4.5. $166.00 (Stock #BABT-0166)|
|Bastnaesite, brownish-gold, Pakistan. Nice, clean gems. We just got these back from overseas cutters: 2 ovals, 2 triads, & 2 rounds. The six weigh 6.16 cts, so about 1 carat each. Rare-earth pegmatite mineral, rarely found in gem quality. Contact us if interested.|
|Brazilianite, yellow with a greenish tinge, 1.59ct., teardrop, SI, ~6.5x10.5mm, Brazil. |
This material is quite hard to get. This one has some light inclusion, so is priced lower, but still a decently good stone. Named for the country of Brazil. A little soft for jewelry, but can be used in a protective mounting.
$87.45 (Stock #BRYT-0159)
|Danburite, Charcas, Mexico. Portuguese cushion cut, 18.58 cts! Huge gem for your collection or wearing, 12 x 20 mm. VVSI. Hardness and appearance similar to white topaz, but probably tougher than topaz (no cleavage). It's difficult to find this material this large any more. #DACC-1858. $371.60|
|NEW! Danburite, Madagascar, pale champagne. Portuguese oval cut, 16.99 cts! Huge gem for your collection or wearing, 10.5 x 14.3 mm. VVSI. Hardness and appearance similar to topaz, but probably tougher than topaz (no cleavage). It's difficult to find this material this large any more. #DACO-1699. $339.80|
|NEW! Danburite, Madagascar. Portuguese cushion cut, 10.5 x 14.3 mm., hint of champagne.7.94 cts! Large gem for your collection or wearing, mm. EC. Hardness and appearance similar to topaz, but probably tougher than topaz (no cleavage). It's difficult to find this material this large any more. #DACC-0794. $158.80|
|NEW! Danburite, Madagascar. pulsar type cut, 11.3 x 14 mm, 8.17cts. Larger gem for your collection or wearing, mm. VVS! Hardness and appearance similar to white topaz, but probably tougher than topaz (no cleavage). It's difficult to find this material this large any more. #DACP-0817. $163.40|
|NEW! Danburite, Madagascar. teardrop cut, 7.31 cts! Large gem for your collection or wearing, 11.0 x 16.8 mm. VVS! Hardness and appearance similar to white topaz, but probably tougher than topaz (no cleavage). It's difficult to find this material this large any more. #DACT-0731. $ 146.20|
|NEW! Danburite, Madagascar, 2.76 ct teardrop shape, 8.3 x 12.7 mm. SI #DACT-0276. $30.00.|
|NEW! Danburite, Madagascar, 2.02 ct trilliant cut 8.8 mm, VVSI. #DACT-0202. $20.20|
|NEW! Danburite, Madagascar, 2.65 ct round, 9.0 mm.. VSI. #DACR-0265. $26.50.|
|NEW! Danburite, Madagascar, 2.04 ct round, 9.0 mm, VVSI. #DACR-0204. $20.40|
|NEW! Danburite, Madagascar, 1.45 ct round, 7.8 mm, EC, #DACR-0145. $14.50|
|Diaspore, light dusty greenish- yellow, 2.39ct., long emerald, VSI, 5.7x13.9mm, Turkey. |
A challenging-to-cut gem from Turkey that seems to be the rage right now. Has a strong cleavage, so you would need to be careful setting this in a mounting. Cut in Sri Lanka.
|Diaspore, greenish-yellow, 1.82ct., pulsar, EC, 6.0x7.4mm, Turkey.
Rare aluminum oxide gem, 6.5 hardness. Has a strong cleavage, but should be fine in a pendant or earrings. American cut. Sometimes advertised on TV as "zultanite".
$182.00 (Stock #DIYP-0182)
light greenish-yellow, 1.99ct., cut corner triangle, VSI, ~7.5x12mm, Turkey.
Windowed, but otherwise nicely cut. Sometimes advertised as "zultanite".
$199.00 (Stock #DIYT-0199)
|Enstatite, greenish brown, 0.62ct., oval, VSI, 4.7x6.8mm, Asia. |
A rare gem. Slight flaw in one end, otherwise clean.
$31.00 (Stock #ENBO-0062)
|Enstatite, pale yellow, 1.06ct., pulsar, VSI, ~5x6mm, unknown locality. |
Rare gem material from E. Africa or the Orient. Hard enough for jewelry.
|Epidote, greenish brown, 3.88ct.
(total), emeralds, SI, California. A fairly common hard mineral, but rare
as a faceted gem. Strongly dichroic, these are dark greenish brown, and are
clean to SI. Most facet grade material now comes from Pakistan. Buy all
four or any of the pieces separately. Collector's item, how many have you
seen from California?|
$30/ct.(Stock #EPBE-4 piece)
SOLD. Fluorite, deep green, 3.08ct., symmetrical freeform, VSI, ~8.5x12mm, Rogerly Mine, England. |
Unusual emeraldy green color with a blue component which gets stronger in direct sun due to high fluorescence. Cut similar to a kite shape. This collector's stone is considered too soft to safely set into most jewelry.
|Fluorite, Colorado, emerald green. We have four of these, weighing up to 1.64 cts. These look for all the world like lighter colored true emeralds! Rare shade of green. All have some light inclusion. Contact us if interested.|
|SOLD. Herderite, Minas Gerais, Brazil. 1.05 ct light golden yellow oval, 6.7 x 7.5 mm, EC. Herderite is a phosphate mineral found in granite pegmatites, and is rare as a faceted gem. It comes in several colors, including purplish, yellow, or colorless. Cut in Brazil. $75.00 (Stock #HRYO-0105).|
|Kornerupine, greenish-brown, 2.16ct., oval, SI, ~6.5x8.5mm, unknown locality. |
A rare gemstone sometimes found in Sri Lanka or Africa, as well as a few other places. Not the most attractive of colors, like epidote. More of a collector's gemstone.
Price reduced: $48.00(Stock #KOBO-0216)
|Lazulite, Brazil. Deep azure blue, 0.76 ct pear, has a flaw, 5 x 7.5 mm. A phosphate mineral, and very rare as a faceted gem of any size to speak of. Cut in Brazil. $178.00 (Stock #LABT-0076)|
|Microlite, Minas Gerais, Brazil. An 0.65 ct golden yellow oval, 3.9 x 5.1 mm, and rate SI. Quite rare as a faceted gemstone. Cut in Brazil. $130.00 (Stock #MIYO-0065)|
|Montebrasite, pale yellow, 2.28ct., pear, VSI, 7.8x10.7mm, Minas Gerais, Brazil. |
Rare pegmatite gem seldom seen as a faceted gemstone. A close cousin to amlygonite. Good brilliance in this stone.
Montebrasite, pale yellow, 3.22 ct designer pendeloque cut,
EC, Minas Gerais, Brazil. |
Another example of a rare pegmatite gemstone. $60.00 (#MBYP-0322)
|Pollucite, colorless, 3.64ct., cushion, EC, ~8x12mm, Brazil. |
A rare colorless cesium silicate pegmatite mineral for collectors, but hard enough (6.5) for jewlery.
Pollucite, colorless, 2.46ct., oval, EC, ~7.5x10.5mm, Pakistan. |
A rare cesium silicate. A rare collector's stone hard enough (6.5) to set into jewelry.
$93.00(Stock #POCO-0246) See picture above.
|NEW! Pollucite, colorless. Pakistan. Recently received from the overseas cutter: 3.64 ct cushion; 1.97 cushion; 1.02 ct pear; 1.04 ct oval; 0.71 ct trilliant; 1.45 ct emerald cut; Other gems up to about 7 carats. Drop me a line for particulars, as it will be awhile before I can publish these online. $20/ct.|
|Prehnite, neon yellow, 2.35ct., oval, EC but hazy, 8x10mm, Australia. |
A rare facetted gem from down under. Attractive lemony-neon yellow color. Is eye-clean, but like rose quartz has a bit of an inherent haziness, creating a warm glow. A collector's stone, but 6.5 on the hardness scale..
|Pyrox-Mangite/Rhodonite, Brazil. An opposed bar-cut oval, 1.20 ct., INCL. These fragile manganese silicate gems are exceedingly difficult to cut due to very strong cleavage causing them to frequently splinter apart on even the finest of laps. This is a first and only example I have ever been able to complete. This one has some inclusions which prevent good brilliance, but the color is extremely nice! $240.00 (Stock #PMRO-0120)|
|NEW! Rhodochrosite, Colorado. We have a new batch of rhodochrosite in from the Sweethome Mine, Alma, CO., cut from an old stash of rough. Stones are up to 1.75 ct., and will have small inclusions or flaws, but face up pretty well. We have maybe 20 or so in the 1/2 carat range, mostly round, and these will not be expensive. So if you've always wanted one for your collection, now is the time. The larger ones will eventually be posted in the Colorado gemstones area.|
|Rutile, Minas Gerais, Brazil. 0.97 ct oval, at $70/ct. Metallic deep red, EC. Not often seen faceted. $47.90 (#RUBO-0097)|
Rutile, Minas Gerais, Brazil. 0.58 ct teardrop shape, EC.
Deep metallic red color. $40.60 (RUBT0058)
|Scheelite, light yellow, 1.59ct., pear, VSI, China. |
Rare tungsten gem. Glows blue in a SW black light.
|Sillimanite, light grayish violet, 1.03ct., emerald, VSI, ~4x10mm, E. Africa. |
This rare material can be difficult to cut, and is an aluminum silicate related to andalusite and kyanite. Most of the material from Sri Lanka and the orient is brown colored. This piece had to be cut a bit shallow with a window.
|Sphalerite, green-yellow, 5.62ct., arrowhead, SI, ~8.5x12.5mm, Big 4 Mine, Kremmling, CO. |
Hard to find. Rare Colorado sphalerite (ZnS) in good size and clarity. These are soft stones, too soft for jewelry, but are highly sought by collectors. This lighter color is ideal to show off their high dispersion.
|Sphalerite, green-yellow, 3.09ct., triangle, SI, ~9mm, Big 4 Mine, Kremmling, CO. |
Rare greenish sphalerite (ZnS) from Colorado. This brighter color is more ideal to show off the high dispersion than the red or brown varieties. Soft, collector's stone only.
|Sphene, greenish-yellow, 0.57 ct teardrop, VSI, unknown locale. Good brilliance, fantastic dispersion, like a diamond or better. $35.60 (Stock #SNYP-0057)|
|Sphene, greenish-yellow, 0.58 ct oval, 4.6 x 6.0 mm, VSI. Unknown locale. Known for it's diamond-like dispersion. $40.00 (Stock #SNYO-0058)|
|Please note: Much effort has been made in the attempt to get as accurate a picture as possible of our gemstones. We are in the process of upgrading our pictures with a newer, higher resolution camera, but it is a slow time-consuming process. Please keep the following in mind while shopping: Cameras do not see color exactly the same as the human eye and lighting conditions often cause large variances. When taking pictures for the web, we have found that it is very difficult to capture the brilliance that the human eye sees and photos cannot often show all of the stones' ambiance and jewelry pieces' fine detail. Also computer monitors vary and often color tones are set to suit the viewer's preferences. When shopping, remember that "the pictures are meant as a rough guide only." All our products have a money-back guarantee (see terms above) so there is no risk in ordering from the Buena Vista Gem Works.|
|To order, simply drop us an email to check on the availability of the piece(s). We accept Master Card, VISA, American Express, and Discover. Or pay by Pay Pal, check, or money order. To pay by credit card, just call us with the name, number, expiration date, and billing address. Your card is not charged until your order is shipped. For information on our guarantee, shipping costs, method of shipment see our Terms & Conditions Page.|
|Buena Vista Gem Works|
P.O Box 476, Buena Vista, Colorado 81211