Kyanite on Quartz
Barra do Salinas Mining District, Coronel Murta
9 x 6.4 x 2.2 CM (cabinet)
Intense bright blue crystals of Kyanite are clinging to a small matrix of Quartz and Kyanite. These crystals are transparent to translucent, they glow an intense blue with just a little backlight. The specimen is shown with a mild backlight in these photos. In excellent condition these have sharp terminations and some slight color zoning. Kyanite is not a rare mineral and quite a lot comes from Brazil, but such fine, complete undamaged crystals that are so well-positioned are quite rare. Far better impact in person, a very choice Kyanite from the find a few years ago at Barra do Salinas in Minas Gerais, Brazil.
A choice, flawless crystal that is fully transparent and has complex internal crazing. Incredibly lustrous. A competition level thumbnail that is undamaged on all sides. The color of this Vesuvianite is unlike nearly all greens from the Jeffrey Mine, it is a dark asparagus green with yellow highlights. Jeffrey Mine Vesuvianites are thought by many to be by far the best in the world. The locality has produced many habits and vivid colors, this will be a fine addition to any Jeffrey suite or just as a fine quality thumbnail.
Jeffrey Mine, Asbestos
3 x 2.2 x 1 CM (thumbnail)
Very esthetic 360 degree thumbnail specimen of perfect radiating crystals of Pectolite and no matrix. These crystals are transparent and in person the luster is bright and glassy. Pectolite is not often a pretty mineral and is most often seen as needle like crystals in radiating balls. This blocky prismatic style is quite different and one of the classic fine minerals from the Jeffrey Mine. I have not seen another Pectolite thumbnail this well-composed. Also vividly fluorescent with an orange response. Choice.
Thumbnail specimen of fine transparent Garnet. These are well-defined, isolated and brilliantly lustrous. The Garnets are perched on a very thin plate of matrix, all show glassy striations on the larger faces. From the great Jeffrey Mine, this thumbnail is a fine but scaled-down version of larger specimens that can cost a fortune when available.
Quartz - optically clear
Peñas Blancas, San Pablo de Borbur
5.3 x 3.7 x 2.2 CM (small cabinet/ large miniature)
Some of the world's clearest and most perfect Quartz has come from the finds in the ridge above the Peñas Blancas Emerald Mines in Boyacá, Colombia. This is an incredibly clean highly lustrous example, one of a small carefully selected suite we obtained at the mine. The luster is brilliant and almost impossible to see in a photograph. This zone has recently produced a lot of good to fine Quartz but very close exam finds that there are very few truly perfect examples, nearly all have at least some chips or rough spots on terminations. This is a remarkably limpid and flawless piece that can act as a prism to make rainbows. Nothing like the average material from here, this is textbook perfect. As is sometimes seen at this locale this piece has some extra faces in corners adding some nice modifications.
A chain of linked line of apple-green Garnets on a Rodingite/Serpentine matrix. The specimen is from the old locality of Val Malenco and was collected prior to 1905. The form and color of these Andradites are classic and immediately recognizable. In very good condition as seen, just one very small chip is noted, the crystals reach up to 1.3 CM in a 4.7 CM line. The luster is waxy and the crystals are all transparent to translucent. In person the color is close to a good deep Peridot hue.
Krennerite - rare Gold Telluride
3.4 x 1.7 x 1.5 CM (small miniature/ large thumbnail (toenail))
Small crystals in aligned clusters with some larger masses of Krennerite in several spots on a greenish matrix, from Western Australia. Krennerite is a quite rare Gold and Silver Telluride that is only known in decent specimens from a small number of localities, most all being old and no longer productive. This is a very good reference grade specimen best appreciated with Magnification. The famed one time find of larger crystals many years ago in Fiji stands as the greatest of all time. This specimen is not in that class, but it is also not priced in the six figures either!
12.5 grams weight for this small specimen indicates a rather rich Gold content. Although this is not a "display grade" specimen it is a a good reference piece for collectors of Gold and Gold Tellurides.
Carnelian - red Quartz nodule
Fassa, Val de Fassa, Trentino -Alto Adige
4.6 x 4.3 x 2.8 CM (miniature)
A half nodule of bright red Quartz (crypto-crystaline variety Carnelian) from Fassa which is now in Italy (since 1919) but at the time this was found was in Austria. From the Phil Scalisi collection and also was in the John Marshall collection Translucent to transparent, an excellent example of an old European Carnelian gem that is just not often seen for sale.