Mineral Specimens with Grossular

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MD-83303 - Grossular, Diopside - - Archived
Jeffrey mine (Jeffrey quarry; Johns-Manville mine), Asbestos, Les Sources RCM, Estrie, Québec, Canada
thumbnail, 0.8 cm

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Grossular, Diopside from Jeffrey mine (Jeffrey quarry; Johns-Manville mine), Asbestos, Les Sources RCM, Estrie, Québec, Canada [db_pics/mdpics/MD-83303a.jpg]

Grossular, Diopside from Jeffrey mine (Jeffrey quarry; Johns-Manville mine), Asbestos, Les Sources RCM, Estrie, Québec, Canada [db_pics/mdpics/MD-83303a.jpg]

There has been a scramble to scoop up any Jeffrey Mine pieces remaining on the market since the closing of the mine. What I like about this specimen is not just the flashing, gemmy grossulars (to 0.8 cm), but the nice mix of green diopside crystals scattered amongst them. 5 x 4.5 x 1.9 cm

MUN05-1 - Garnet var. Hessonite - SOLD
Kaiiado District, Rift Valley Province, Kenya
small cabinet, 5.6 x 4.6 x 3.6 cm

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Garnet var. Hessonite from Kaiiado District, Rift Valley Province, Kenya [db_pics/pics/mun05-1a.jpg]

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Garnet var. Hessonite from Kaiiado District, Rift Valley Province, Kenya [db_pics/pics/mun05-1b.jpg]

This is the single best Hessonite garnet we have yet seen from the finds new in Kenya, a monster compared to other crystals found!

MUN05-50 - Garnet var. Grossular - SOLD
Kaiiado District, Rift Valley Province, Kenya
small cabinet, 7.1 x 4.8 x 4.2 cm

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Garnet var. Grossular from Kaiiado District, Rift Valley Province, Kenya [db_pics/pics/mun05-50a.jpg]

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Garnet var. Grossular from Kaiiado District, Rift Valley Province, Kenya [db_pics/pics/mun05-50b.jpg]

A sharp, very bright, 1.5 cm crystal perched in matrix from thse new finds!

MUN05-52 - Garnet var. Grossular - SOLD
Kaiiado District, Rift Valley Province, Kenya
small cabinet, 6 x 4.2 x 2.8 cm

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Garnet var. Grossular from Kaiiado District, Rift Valley Province, Kenya [db_pics/pics/mun05-52a.jpg]

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Garnet var. Grossular from Kaiiado District, Rift Valley Province, Kenya [db_pics/pics/mun05-52b.jpg]

This is the single biggest Grossular garnet we have yet seen from the finds new in Kenya, a monster compared to other crystals found! It is huge, complete, and beautiful, with a neat peachy color. It has some natural fracturing, but is complete.

ORDWAY-68 - Grossular Garnet with Diopside - $ 500
Crestmore Quarry, Riverside County, California, USA
cabinet, 14.3 x 8.2 x 3.7 cm

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ex. Al Ordway

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The Crestmore quarry was one of the favorite collecting sites for Al Ordway and this specimen is a good example of the kind of rare material he put away. It features many lustrous and translucent, cinnamon-colored grossular crystals to 1.5 cm across, associated with a few prismatic, lustrous and slightly translucent, diopside crystals (to 2 cm in length). Obtained by collecting it in 1969, according to the label.

RLKG10-136 - Grossular - $ 100
Sri Lanka
thumbnail, 8.4 x 6.9 mm ; 1.76 carats

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Grossular from Sri Lanka [db_pics/new2010/rlkg136a.jpg]

Grossular from Sri Lanka [db_pics/new2010/rlkg136b.jpg]

Garnet comes in virtually every color of the rainbow. These gems remind me somewhat of the great "Cinnamon" Grossulars from the Jeffrey Quarry in Quebec, Canada. I've seen this material for a few years now and it is very impressive for Grossular both from the standpoint of clarity AND color. This gem is virtually eye clean and has a great light orange color with a slight peach overtone and an Oval cut. I think that this is a very underappreciated gem, and this color is not seen very often in Grossular so don't miss out.

RLKG10-250 - Grossular - $ 115
Kenya
thumbnail, 8.7 x 5.7 mm ; 1.34 carats

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Grossular from Kenya [db_pics/new2010/rlkg250a.jpg]

Grossular from Kenya [db_pics/new2010/rlkg250b.jpg]

Garnet comes in virtually every color of the rainbow. A few years ago, Mali was producing some very attractive light green Grossulars (along with yellow, golden and brown gems), but it seems as though this material has disappeared from the market in recent years. This stone looks very similar to the material from Mali, but came labeled to me as being from Kenya from a very reliable source. This gem is virtually eye clean and has a nice green color with a Pear cut. I think that this is a very underappreciated gem, and this color is not seen very often in Grossular so don't miss out.

RWHIT-21 - Grossularite (Garnet) - SOLD
Jeffrey Mine, Asbestos, Quebec, Canada
small cabinet, 5.9 x 4.5 x 2.0 cm

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ex. Robert Whitmore

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Colorless grossular from this locality is actually, it seems, less common than the colored varieties it is better known for - and colorless grossular is actually quite rare overall. Ths is a sparkling, solid plate of colorless grossular garnet, with crystals to 1 cm. Collected by Bob Whitmore in 1968.

RWHIT-25 - Grossular Garnet with Diopside - SOLD
Lowell Quarry, Eden Mills, Vermont, USA
small cabinet, 9.5 x 9 x 3 cm

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ex. Robert Whitmore

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Grossular Garnet with Diopside from Lowell Quarry, Eden Mills, Vermont, USA [db_pics/new09mix/2-edenmillsbig.jpg]

The Whitmore collection was especially well-known for his superb suite of Eden Mills minerals, the product of decades of self-collecting at this remote locality near the Canadian border. Many pieces from this suite were featured in the American Treasures case in Tucson 2008, on exhibit. This specimen , however, was NOT featured there because he had never exposed the crystals fully from the overlaying calcite, and so it lurked relatively unappreciated in his collection for the 30 years until my purchase. It was good, even unprepped...but now it is a killer with the largest complete, robust crystals of this habit that he or others I have shown it to, know of. As Bob said, it SHOULD have gone in the case, but it just got missed. Self-collected by Bob in 1978, this remains a unique specimen. The well-trimmed size of the plate and association with diopside really add interest. Bob considered this among the most important pieces he found in 40 years of collecting at Eden Mills

RWHIT-28 - Grossular Garnet - SOLD
Pitts-Tenney Quarry, Minot, Androscoggin Co., Maine, USA
cabinet, 13 x 7 x 5 cm

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ex. Robert Whitmore

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Grossular Garnet from Pitts-Tenney Quarry, Minot, Androscoggin Co., Maine, USA [db_pics/new09mix/5-mainegarnet.jpg]

This is a very desired old locality with uniquely colored garnets of an amber-reddish mix in color. They are VERY attractive in person! This specimen features aesthetic sharp xls in matrix, to 3.5 cm in size. It is a major example for the location and for a NE garnet. Whitmore's garnet suite, built by collecting and trading for 50 years, was particularly notable.

RWHIT-41 - Grossular Garnet - SOLD
Lowell Quarry, Eden Mills, Vermont, USA
small cabinet, 8 x 5 x 2.5 cm

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ex. Robert Whitmore

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Grossular Garnet from Lowell Quarry, Eden Mills, Vermont, USA [db_pics/new09mix/3-amt-edenmills.jpg]

The Whitmore collection was especially well-known for his superb suite of Eden Mills minerals, the product of decades of self-collecting at this remote locality near the Canadian border. Many pieces from his suite were featured in the American Treasures case in Tucson 2008, on exhibit. This is a sparkling and relatively large plate, that was prominent in that exhibition for this locality case. Additionally, THIS SPECIMEN ALSO WAS ONE OF THE FEW FROM EACH LOCALITY CASE, THAT MADE THE BOOK (American Mineral Treasures), and is prominently illustrated in that seminal text. Self-collected by Bob in the late 1970s, this remained one of his best specimens. The richness and quality of the garnets overall are hard to surpass.

T06-147 - Grossular Garnet on Tanzanite - SOLD
Merelani Mines, Arusha, Tanzania
miniature, 3.5 x 2.7 x 2 cm

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Grossular Garnet on Tanzanite from Merelani Mines, Arusha, Tanzania [db_pics/pics/t06-147a.jpg]

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Grossular Garnet on Tanzanite from Merelani Mines, Arusha, Tanzania [db_pics/pics/t06-147b.jpg]

This superb miniature is from a rare, small find of about 6 years back. It features mint-green grossular garnets ON tanzanite matrix! The garnets are good in and of themselves, and of quite high quality for the location. The combination, though, is just unique so far as i know.

T06-63 - bicolor Grossular Garnet - SOLD
Eden Mills, Vermont, USA
small cabinet, 7.1 x 6.4 x 3.1 cm

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ex. Ken Hollman

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bicolor Grossular Garnet from Eden Mills, Vermont, USA [db_pics/pics/t06-63a.jpg]

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bicolor Grossular Garnet from Eden Mills, Vermont, USA [db_pics/pics/t06-63b.jpg]

A truly unusual piece the likes of which I have not seen before, with multiple colors within the same crystal. Most larger crystals, over 1 cm, show green edges around pink-orangey cores. The garnets are perched on thick diopside crystals. There is admittedly some minor damage, but in context to the other qualities of the piece, its not important in context. Its very weird, and I have never seen one like it....

T07-40 - Grossular Garnet - SOLD
Jeffrey Mine, Asbestos, Quebec, Canada
miniature, 5.5 x 4.8 x 2.9 cm

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With the Jeffrey Mine now closed, fine grossular garnet specimens, like this one, are becoming even more scarce than before. This matrix specimen has several, gemmy, lustrous, cinnamon colored crystals to almost 2.00 cm across. The defining characteristics of these garnet crystals, are the incredible striations which modify the main dodecahedral faces. Truly fine and getting much harder to find! This is a very aestheic miniature, by any standard.

T08-72 - Hessonite Garnet with mg-Epidote - $ 3000
Giu Margone, Piemont, Italy
small cabinet, 6.3 x 4.7 x 4.6 cm

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ex. Dr. Edward David
ex. Martin Zinn

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When I first saw this labelled as spessartine garnet with vesuvianite, I thought something was odd from the habits and color of the combination. I took it to show a number of European collectors to confirm its oddity, since I had never had a similar specimen before, and the consensus was that this is a superb example, worth $2500-5000 range, of a rare variety of magnesium-rich epidote from a famous find in the 1970s. This is an important locality specimen, but its also a superb piece aesthetically for the contrast of crystal forms and colors. The largest mg-Epidote is 3 cm tall and the largest garnet is 2 cm tall, both finely crystallized. While there are some little spots of damage or contact, the major crystals are in good shape and the piece overall presents well enough that two very serious collectors owned it anyways, even without knowing (as I did not!) exactly how rare and desirable the piece was with the full identification now on it. From the Marty Zinn collection to Ed David through purchase, and then recently from the Ed David Collection to me in an exchange.

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Rob Lavinsky, rob@irocks.com

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