Zoisite Var. Tanzanite from Arusha, Merelani, Tanzania [TANZANITE4]
Zoisite Var. Tanzanite
Arusha, Merelani, Tanzania
Quartz Var. Rose from Lavra da Ilha Pegmatite, Taquaral, Itinga, Aracuai, Minas Gerais, Brazil [ROSE3]
Quartz Var. Rose
Lavra da Ilha Pegmatite, Taquaral, Itinga, Aracuai, Minas Gerais, Brazil
Apophyllite with Scolecite from Jalisgoan, near Jalgoan, Maharashtra State, India [APOPHYLLITE5]
Apophyllite with Scolecite
Jalisgoan, near Jalgoan, Maharashtra State, India
Smithsonite from Tsumeb Mine, Tsumeb, Namibia [SMITHSONITE5]
Smithsonite
Tsumeb Mine, Tsumeb, Namibia
Adamite on Limonite from Ojuela Mine, Mapimi, Durango, Mexico [ADAMITE8]
Adamite on Limonite
Ojuela Mine, Mapimi, Durango, Mexico
Opal (rough and cut) from Shoa Province, Ethiopia [OPAL12]
Opal (rough and cut)
Shoa Province, Ethiopia

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Demantoid Garnets, Hessonites and Herkimer Diamonds



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 page 1 / 2  -  14 specimens selected  -  next  -  bottom  -  Home 




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Quartz with petroleum inclusions from Zhob Baluchistan, Pakistan [db_pics/pics/quartz7a.jpg] Quartz with petroleum inclusions from Zhob Baluchistan, Pakistan [db_pics/pics/quartz7b.jpg] Quartz with petroleum inclusions from Zhob Baluchistan, Pakistan [db_pics/pics/quartz7c.jpg] Quartz with petroleum inclusions from Zhob Baluchistan, Pakistan [db_pics/pics/quartz7d.jpg]



QUARTZ7 - Quartz with petroleum inclusions
$ 45.00 SOLD
Zhob Baluchistan, Pakistan
thumbnail - 1.8 x 1.5 x 1.2 cm

Once in a great while, I am able to get ahold of this unique material found in Pakistan. this Herkimer Diamond-like Quartz Crystal is included with Petroleum. It looks yellow under normal light, and under long wave ultraviolet it fluoresces a brilliant blue color. A normal clear Quartz would look black or invisible in the bottom two pictures, using the ultraviolet light. It was found in central Pakistan in a region that is war strifed, and dangerous. (no Pakistani mineral dealers ever want to go there!). This is a complete crystal, which is rare for this occurrence, as most crystals are just broken pieces. It weighs 14.53 carats/ 2.91 grams. 




(click on the pictures to enlarge)

Quartz, var. Herkimer Diamond from Ace of Diamonds Mine, Herkimer County,  New York [db_pics/pics/herkimer3a.jpg] Quartz, var. Herkimer Diamond from Ace of Diamonds Mine, Herkimer County,  New York [db_pics/pics/herkimer3b.jpg] Quartz, var. Herkimer Diamond from Ace of Diamonds Mine, Herkimer County,  New York [db_pics/pics/herkimer3c.jpg] Quartz, var. Herkimer Diamond from Ace of Diamonds Mine, Herkimer County,  New York [db_pics/pics/herkimer3d.jpg] Quartz, var. Herkimer Diamond from Ace of Diamonds Mine, Herkimer County,  New York [db_pics/pics/herkimer3e.jpg]



HERKIMER3 - Quartz, var. Herkimer Diamond
$ 95.00 SOLD
Ace of Diamonds Mine, Herkimer County, New York
thumbnail - 2.1 x 1.9 x 1.6

This is a spectacular occurrence. A calcite crystal has miraculously attached itself to a super clear Herkimer Diamond. It is all natural, not reconstructed or repaired. For anyone (like me) who knows Herkimer Diamonds this basically never happens. Under the calcite, and within the Quartz, is a thin layer of Anthraxolite (carbon) included. The crystals are in great, pristine condition. You may never see another like it. 




(click on the pictures to enlarge)

Quartz, var. Herkimer Diamond from Ace of Diamonds Mine, Herkimer County,  New York [db_pics/pics/herkimer4a.jpg] Quartz, var. Herkimer Diamond from Ace of Diamonds Mine, Herkimer County,  New York [db_pics/pics/herkimer4b.jpg] Quartz, var. Herkimer Diamond from Ace of Diamonds Mine, Herkimer County,  New York [db_pics/pics/herkimer4c.jpg] Quartz, var. Herkimer Diamond from Ace of Diamonds Mine, Herkimer County,  New York [db_pics/pics/herkimer4d.jpg]



HERKIMER4 - Quartz, var. Herkimer Diamond
$ 175.00 SOLD
Ace of Diamonds Mine, Herkimer County, New York
miniature - 4.1 x 2.3 x 2 cm

Herkimer Diamonds are a special variety of Quartz, found in Herkimer county, New York. The deposit occurs in dolomite (silicified limestone) and is incredibly difficult to break. Fossils are found alongside Herkimers, that further indicates a low temperature crystallization. Miners use heavy sledge hammers and chizels to remove many feet of overburden, to expose the pocket layer. Herkimers were named by General Herkimer in the mid 1800's. This is a very clear, beautiful example of two inter-grown Herkimer Diamonds. It's well over 1 1/2 inches long and is very gemmy and reflective. In the larger of the two crystals, there is a substantial gas bubble trapped inside a fluid cavern that moves about 2 mms, when you angle the crystal down. The two crystals may have been reconstructed, but I see no signs of epoxy under fluorescent light. 




(click on the pictures to enlarge)

Quartz, var. Herkimer Diamond from Ace of Diamonds Mine, Herkimer County,  New York [db_pics/pics/herkimer5a.jpg] Quartz, var. Herkimer Diamond from Ace of Diamonds Mine, Herkimer County,  New York [db_pics/pics/herkimer5b.jpg] Quartz, var. Herkimer Diamond from Ace of Diamonds Mine, Herkimer County,  New York [db_pics/pics/herkimer5c.jpg] Quartz, var. Herkimer Diamond from Ace of Diamonds Mine, Herkimer County,  New York [db_pics/pics/herkimer5d.jpg]



HERKIMER5 - Quartz, var. Herkimer Diamond
$ 60.00 SOLD
Ace of Diamonds Mine, Herkimer County, New York
thumbnail - 2.2 x 1.8 x 1.9 cm

Herkimer Diamonds are a special variety of Quartz, found in Herkimer county, New York. The deposit occurs in dolomite (silicified limestone) and is incredibly difficult to break. Fossils are found alongside Herkimers, that further indicates a low temperature crystallization. Miners use heavy sledge hammers and chizels to remove many feet of overburden, to expose the pocket layer. Herkimers were named by General Herkimer in the mid 1800's. This is a druzy style Herkimer Diamond Cluster, showing the variation in the crystal sizes, as well as Anthroxolite inclusions that make the smaller crystals appear black. There is no damage. 




(click on the pictures to enlarge)

Garnet var. Hessonite from Jeffrey Mine, Asbestos, Quebec, Canada [db_pics/pics/hessonite3a.jpg] Garnet var. Hessonite from Jeffrey Mine, Asbestos, Quebec, Canada [db_pics/pics/hessonite3b.jpg] Garnet var. Hessonite from Jeffrey Mine, Asbestos, Quebec, Canada [db_pics/pics/hessonite3c.jpg]



HESSONITE3 - Garnet var. Hessonite
$ 65.00 SOLD
Jeffrey Mine, Asbestos, Quebec, Canada
thumbnail - 2.1 x 1.5 x .7 cm

This is a strange little garnet. It has the most bizarre inclusions within it. They appear golden and sparkly, but I don't know what they are! Hessonites from the Jeffrey Quarry, don't usually have inclusions of any note, which makes this piece unique. To a garnet collector, this is a choice thumbnail. It weighs 14.13 ct/2.82 grams. 




(click on the pictures to enlarge)

Tektite var. Libyan Desert Glass from Gilf Kebir Region, Egypt [db_pics/pics/dsglass1a.jpg] Tektite var. Libyan Desert Glass from Gilf Kebir Region, Egypt [db_pics/pics/dsglass1b.jpg] Tektite var. Libyan Desert Glass from Gilf Kebir Region, Egypt [db_pics/pics/dsglass1c.jpg] Tektite var. Libyan Desert Glass from Gilf Kebir Region, Egypt [db_pics/pics/dsglass1d.jpg]



DSGLASS1 - Tektite var. Libyan Desert Glass
$ 65.00 SOLD
Gilf Kebir Region, Egypt
miniature - 3.7 x 3 x 2 cm

Libyan Desert Glass is believed to the result of the impact of a large meteorite, or the result of a significant aerial burst explosion around 28.5 million years ago (dated by the fission track method). They are the purest form of natural glass on earth, containing over 96% silica. They were first discovered by ancient Egyptians as evidenced by a scarab beatle carvings found on the mummy of King Tutankhamun. Today they are found in the deep Saharan desert, two days driving into a militarized zone near the border of Libya and Egypt. The leading theory leans towards an aerial burst ten thousand times more powerful than the Hiroshima nuclear detonation (Boslough). Some pieces have dark streaks; chemical analyses of these inclusions show enrichment by meteoritic elements, such as Osmium, with typical chondritic proportions (Koeberl C.). 

This piece is a pleasant, gemmy yellow and shows small white Cristobalite inclusions (a high temperature silica polymorph). It weighs 23 grams.




(click on the pictures to enlarge)

Tektite var. Libyan Desert Glass from Gilf Kebir Region, Egypt [db_pics/pics/dsglass2a.jpg] Tektite var. Libyan Desert Glass from Gilf Kebir Region, Egypt [db_pics/pics/dsglass2b.jpg] Tektite var. Libyan Desert Glass from Gilf Kebir Region, Egypt [db_pics/pics/dsglass2c.jpg] Tektite var. Libyan Desert Glass from Gilf Kebir Region, Egypt [db_pics/pics/dsglass2d.jpg] Tektite var. Libyan Desert Glass from Gilf Kebir Region, Egypt [db_pics/pics/dsglass2e.jpg]



DSGLASS2 - Tektite var. Libyan Desert Glass
$ 50.00 SOLD
Gilf Kebir Region, Egypt
miniature - 4 x 2.3 x 2.2 cm

Libyan Desert Glass is believed to the result of the impact of a large meteorite, or the result of a significant aerial burst explosion around 28.5 million years ago (dated by the fission track method). They are the purest form of natural glass on earth, containing over 96% silica. They were first discovered by ancient Egyptians as evidenced by a scarab beatle carvings found on the mummy of King Tutankhamun. Today they are found in the deep Saharan desert, two days driving into a militarized zone near the border of Libya and Egypt. The leading theory leans towards an aerial burst ten thousand times more powerful than the Hiroshima nuclear detonation (Boslough). Some pieces have dark streaks; chemical analyses of these inclusions show enrichment by meteoritic elements, such as Osmium, with typical chondritic proportions (Koeberl C.). 

This piece is a pleasant, gemmy yellow and shows small white Cristobalite inclusions (a high temperature silica polymorph). It has a neat shape, and weighs 17 grams.




(click on the pictures to enlarge)

Garnet var. Demantoid from Ambanja Dist., Diana Region, Antsiranana Prov., Madagascar [db_pics/pics/demantoid1a.jpg] Garnet var. Demantoid from Ambanja Dist., Diana Region, Antsiranana Prov., Madagascar [db_pics/pics/demantoid1b.jpg] Garnet var. Demantoid from Ambanja Dist., Diana Region, Antsiranana Prov., Madagascar [db_pics/pics/demantoid1c.jpg] Garnet var. Demantoid from Ambanja Dist., Diana Region, Antsiranana Prov., Madagascar [db_pics/pics/demantoid1d.jpg]



DEMANTOID1 - Garnet var. Demantoid
$ 75.00 SOLD
Ambanja Dist., Diana Region, Antsiranana Prov., Madagascar
thumbnail - 1.8 x 1.4 x .8 cm

This relatively new deposit of Demantoid garnets were found in a mangrove swamp, on the northwest coast of Madagascar. As is typical in Madagascar, when a few gem pebbles are found, a massive "rush," happens. In this case miners must dig holes 6 - 30 feet deep, but only at low tide. According to my friend who traveled to the site, the best colors were found early on in the strike. As the deposit has played out and gotten deeper, the colors have shifted to a more brownish shade of green. This piece shows great color, and excellent reflectivity. Some of these pieces have a color variance between daylight and fluorescent lighting. This piece is relatively consistent. The crystals cover 200 degrees around the whitish matrix (seen in "demantoid1d") It weighs 13.40 carats/ 2.68 grams.




(click on the pictures to enlarge)

Garnet var. Demantoid from Ambanja Dist., Diana Region, Antsiranana Prov., Madagascar [db_pics/pics/demantoid2a.jpg] Garnet var. Demantoid from Ambanja Dist., Diana Region, Antsiranana Prov., Madagascar [db_pics/pics/demantoid2b.jpg] Garnet var. Demantoid from Ambanja Dist., Diana Region, Antsiranana Prov., Madagascar [db_pics/pics/demantoid2c.jpg] Garnet var. Demantoid from Ambanja Dist., Diana Region, Antsiranana Prov., Madagascar [db_pics/pics/demantoid2d.jpg]



DEMANTOID2 - Garnet var. Demantoid
$ 175.00 SOLD
Ambanja Dist., Diana Region, Antsiranana Prov., Madagascar
thumbnail - 3 x 2.3 x 1.2 cm

This relatively new deposit of Demantoid garnets were found in a mangrove swamp, on the northwest coast of Madagascar. As is typical in Madagascar, when a few gem pebbles are found, a massive "rush," happens. In this case miners must dig holes 6 - 30 feet deep, but only at low tide. According to my friend who traveled to the site, the best colors were found early on in the strike. As the deposit has played out and gotten deeper, the colors have shifted to a more brownish shade of green. This piece shows great color, and excellent reflectivity. The crystals on this piece are striking, and well 'connected' to one another. Some of these pieces have a color variance between daylight and fluorescent lighting. This one is quite consistent. I demonstrate what the piece looks like with stronger lighting on the third pic. It weighs 32.40 carats/6.48 grams.




(click on the pictures to enlarge)

Garnet var. Demantoid from Ambanja Dist., Diana Region, Antsiranana Prov., Madagascar [db_pics/pics/demantoid3a.jpg] Garnet var. Demantoid from Ambanja Dist., Diana Region, Antsiranana Prov., Madagascar [db_pics/pics/demantoid3b.jpg] Garnet var. Demantoid from Ambanja Dist., Diana Region, Antsiranana Prov., Madagascar [db_pics/pics/demantoid3c.jpg]



DEMANTOID3 - Garnet var. Demantoid
$ 275.00 SOLD
Ambanja Dist., Diana Region, Antsiranana Prov., Madagascar
thumbnail - 1.5 x 1.2 x .9 cm

This relatively new deposit of Demantoid garnets were found in a mangrove swamp, on the northwest coast of Madagascar. As is typical in Madagascar, when a few gem pebbles are found, a massive "rush," happens. In this case miners must dig holes 6 - 30 feet deep, but only at low tide. According to my friend who traveled to the site, the best colors were found early on in the strike. As the deposit has played out and gotten deeper, the colors have shifted to a more brownish shade of green. This piece shows great color, and wonderful transparency. The two crystals are large for this location, each is roughly 1 cm long, and quite bright. Some of these pieces have a color variance between daylight and fluorescent lighting, however this one is consistent and of great quality. My friend paid over $100 US for it in the bush, in Madagascar. For the miner it was equal to several months wages (for a regular job). It weighs 9.73 carats/ 1.95 grams.

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