Diopside -single crystal
Orford Nickel Mine, Brompton Lake, Sherbrooke
5 x 1.6 x .8 CM (miniature)
Exceptional, perfect, partly gemmy and with glassy luster this is a great Orford Diopside. There were larger crystals found years ago but few were so well defined. This has the desirable honey yellow color and looks better in person. A modern classic with top quality, perfectly undamaged and looks fine from every angle.
A fine old DeKalb, New York Diopside crystal with exceptional transparency and color. This has a "crown" of altered Tremolite that adds a nice accent. These encrustations were usually removed by mechanical means but this is still intact and I think gives an nice touch to the crystal. Some typical contacting on the rear and one side, overall the condition is excellent with far better than usual luster.
The so called Chromian Diopsides from the famed Orford Nickel mine are quite prized. We are told that the color may be due to Nickel and not Chrome but either way these are very attractive and uncommon. This one has unusually fine apple green hue. The largest crystal is 1.7 CM and all are gemmy with very glassy luster. Normally the larger crystals are opaque, and a yellowish to grey color. Such bright green clear crystals are usually only microscopic. Tiny deep green Grossular are also present as are Calcite crystals. The tiny crystals add a lot of sparkle in person.
Diopside with Grossular
Jeffrey Mine, Asbestos
2.6 x 2.2 x 1.8 CM (thumbnail)
Late Summer 2018
Mostly a Diopside thumbnail but with some bright orange Grossular tucked between the crystals. A waxy yellow-green color that is not very common at the Jeffrey mine. The central area of the piece is undamaged and well formed, only the outer edge has some chipping. A very affordable but well crystalized piece.
A very big blocky Diopside crystal that is a perfectly formed, has a good color and some translucence. Ex Steve Chamberlain, A. Edwards, and Canning collections, this is remarkably perfect, undamaged and about as clean as can be. Several faces show complex growth patters and have a nice silky luster. Choice for the specie and excellent for the locale.
Diopside on Graphite
Merelani, Umba Valley, Lelatama Mountains, Arusha Region
2.9 x 2.2 x 2.3 CM (small miniature/ large thumbnail (toenail))
Pre Holiday 2017
The gem Diopside crystals from Merlani are modern classics and can have brilliant form as seen here. The color is a yellow to pale greenish hue and the crystals are complete all around, undamaged and statuesque. The contrast with the Graphite adds a nice balance and the complex modified terminations are very distinctive. Good luster with gem clear areas but more translucent than transparent overall.
Bright green Diopside with emerald green micro Grossular in an esthetic cluster from the famed Orford Mines. The Orford Nickle mines produced some excellent Diopside crystals but mostly grey or pale green in color. These very bright green crystals were often called "Chromian" for the color, but now are considered to be colored by Nickle instead. No matter the source these are an especially rich green and this specimen has many well formed, sharp and esthetic prisms to 1.5 CM tall. Very attractive and quite rare.
Diopside -Gem crystals, classic locale
Calvin Mitchell Prospect, Dekalb, St Lawrence County
5.7 x 4.7 x 4.5 CM (cabinet)
Pre Holiday 2017
A spray of gemmy green Diopside crystals (to 1.4 CM) stand on a matrix of Quartz from famed Dekalb, NY locale. The Diopsides are undamaged and glassy, terminated and a few show fibrous areas inside. Not often available and usually quite expensive.