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23 specimens listed
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white Prehnite casts
stock #7.AE-239
Malad Quarry, Malad, Mumbai District
Maharashtra, India
9.6 x 4.2 x 2.5 CM (cabinet)
price: $320
Spring 23

Really unusual hollow casts of sparkling white crystalline Prehnite sprinkled with small clear Apophyllite crystals. From Malad (Deccan Plateau of India) It looks like this has grown over Anhydrite crystals (and not Laumontite) that are now gone. The backside of the specimen is hollow, the void of the original crystals is clearly seen. No damage or bruises, this is a perfect and complete replacement unlike anything we know from India. Such replacements are well-known in the Northeastern USA trap-rock zones, but never in such elongated, slender fingers and always with typical green color. White Prehnite is surprisingly uncommon, this piece also has very distinct small crystal bundles of flattened stacks of lath-like Prehnite crystals best appreciated with magnification. Although the Deccan Plateau produces many mineral specimens, this habit and style is really unusual and comes from a find more than 16 years ago.

Prehnite with Epidote - classic USA locality
stock #13.1-237
Fairfax Quarry, Fairfax County
Virginia, United States
2.9 x 2.3 x 2 CM (thumbnail)
price: $290
Spring 23

Remarkable smooth ball of Prehnite sprinkled with sparkling crystals of Epidote. This is unusual as it is a 360 degree piece and the ball is complete. This habit has been referred to as a "Roman helmet" and is distinctive from this locale as is the dark green hue that is attributed to Chlorite inclusions. In fine condition and a killer thumbnail for the locality.

Prehnite - crystallized ball/rosette cluster
stock #19.1-650
Merelani Hills, Lelatama Mountains, Simanjiro District
Manyara Region, Tanzania
6.7 x 5.6 x 5.7 CM (cabinet)
price: $380
new year 2021

A large, complete Prehnite ball that is well-crystallized on all sides. The radiating crystals are quite lustrous, mostly a dark blue- green and with a few scattered clear Calcites adding extra contrast. The largest individual Prehnites are almost 2 CM, though most are about 1 CM. The condition is exceptional, undamaged and the overall esthetics are impressive from many angles. This piece is from the major find in 2018 and well above average for quality.

Prehnite on Epidote
stock #AX-12-261
Djouga Diggings, Bendougou Village, Arrondissement of Daikon, Bofoulabe
Kayes Region, Mali
7 x 5.9 x 5.4 CM (cabinet)
price: $320
new year 2021

The Prehnites from Mail have been one of the best newer discoveries of recent years. The various diggings have produced tons of specimens but the top percentage of esthetic and undamaged pieces is quite small. This is a very choice piece with fine, lustrous undamaged Epidote crystals that are the matrix for two complete Prehnite balls. A neat sculptural specimen that looks great from several angles.

stock #19.1-652
Merelani Hills, Lelatama Mountains, Simanjiro District
Manyara Region, Tanzania
5.9 x 3.7 x 3.4 CM (cabinet)
price: $300

"Cockcomb" habit spray of well defined Prehnite crystals from the recent finds at Merlani. The individual crystals are flattish blade type with distinct individual terminations, up to 2.6 CM tall. The Prehnite is all translucent, has a bright luster and a pleasing green to yellow hue. The white clusters are Calcite (fluorescent) with a few Pyrite cubes scattered about . These Tanzanian Prehnites are a very good value and can have outstanding form. This is a choice example.

Prehnite and Apophyllite - classic locale
stock #17.1-649
Loanhead Quarry, Beith
Strathclyde, Scotland
5.9 x 4.7 x 3.4 CM (cabinet)
price: $290

Yellow Prehnite in a crystalline ball from the Loanhead Quarry, Scotland. A single gem clear Apophyllite crystal is a fine contrast. From the Les Hitchings collection, this was collected by him in 1974 during an extended trip to Scotland where he spent weeks digging in the Glasgow area. This was the best Prehnite he obtained.

Prehnite- gemmy large crystals
stock #19.1-651
Merelani Hills, Lelatama Mountains, Simanjiro District
Manyara Region, Tanzania
5.8 x 4.6 3.4 CM (cabinet)
price: $520
Spring 2020

A large rosette of sharp Prehnite crystals that are translucent to transparent, lustrous and colorful. Green exterior with a more yellow core area, a fine example from the amazing finds at Merelani, Tanzania. This area is incredibly rich mineral wise, it is best known of course as the source of Tanzanite but also incredible fine Diopside and these unusual but beautiful Prehnites. Most of the Merelani Prehnites have considerable damage or bruising, this piece is a more choice example, far better than average, with esthetic and distinct crystals. In excellent condition except at the bottom where this was attached.

Prehnite - sharp gemmy crystals
stock #AX-24-495
Jeffrey Mine, Asbestos (now Val-des-Sources, Estrie,
Quebec, Canada
3.4 x 2.7 x 2 CM (small miniature/ large thumbnail (toenail))
price: $780
Spring 2020

Prehnite crystals which are unusually sharp, clear and distinct with textbook perfect form. An older specimen from the Jeffrey Quarry in Quebec which was at one time an incredible source of fine and often unique Prehnites. This is in flawless condition damage-wise. The matrix is a mix of needle crystals of Pectolite and micro Natrolite. The matrix is fluorescent as well. Very much a three dimensional specimen that displays well from almost any angle, the overall esthetics are impressive.