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29 specimens listed
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Mcguinnessite
stock #0888-JM-3125
Miners Ridge, Red Mountain, Mendocino County
California, United States
7.2 x 4.9 x 3.3 CM (cabinet)
price: $90
new year 2021

A good sized blocky matrix with Mcguinnessite in rich crystalline crusts on several faces. Ex John Marshall collection, this is from the type locality area of Red Mountain. Close exam shows there are many tiny spheres and cups of blue green mineral, as well as some massive zones. A nice example of this unusual Copper mineral.

Neptunite with Benitoite on Natrolite
stock #AC-368
San Benito Peak, San Benito County
California, United States
10.6 x 6.4 x 5.7 CM (cabinet)
price: $490
new year 2021

Cabinet sized matrix specimen covered with a dense mass of lustrous black Neptunite on the display face. A single blue Benitoite is tucked away in the mix so this is really all about the Neptunites. Several crystals are doubly terminated and all contrast well with the white matrix. This is an older piece from the Immer Cook collection, dating to the late 1960 era. Choice piece with the Neptunite well-exposed and displaying very well.

Elbaite (Rubellite) with Lepidolite
stock #AX-7-233-(646)
Himalaya Mine, Gem Hill,Mesa Grande District, San Diego County
California, United States
2.1 x 1.5 x 1.2 CM (thumbnail)
price: $650
new year 2021

A fine, super colorful thumbnail Tourmaline from the Larry White collection. Great condition, gemmy transparency and vivid pink to red color that contrast with the purple Lepidolite. This is currently mounted on one of Larry's handmade wooden bases but it can easily be removed if desired. A slight bend near the termination and some color zoning add extra interest. In addition the crystal shows a very good dichroic color shift in polarized light. Choice small thumbnail. A classic USA gem crystal, esthetic, and even nicer in person.

Benitoite - gemmy crystals on Natrolite
stock #AC-107
Benitoite Gem Mine, Iridia, San Benito Co.
California, United States
7.4 x 6.9 x 3.3 CM (cabinet)
price: $480
new year 2021

An older, choice Benitoite specimen with several deep inky blue gem crystals contrasting with the matrix. There is certainly more good Benitotite within the Natrolite but as is this has a nice display. The color on several crystals is super. A few tiny transparent orange Joaquinite crystals are also seen on close exam. The old Schortmanns label for this piece gives a late 1940's vintage though this is possibly a pre-WW2 specimen. This is from the type locality for both Benitoite and Joaquinite. Top Benitoites have become incredibly expensive, this is not a top piece but it is not a four to six figure price either, a very good value for the quality.

Mercury (native) with Tiemannite and Cinnabar
stock #18-AX 10-406
Sonoma County
California, United States
5.7 x 3.4 x 2,9 CM (cabinet)
price: $330


A rarely seen native element, Mercury sometimes is found in oxidized parts of Cinnabar deposits. This is an incredibly rich piece with dozens of globules partly protruding from the matrix, The silvery globs are in some cases over 2-3 mm and very dense so easily seen on display, not like most pieces which are rather subtle. As is the case with all such specimens it has been sprayed with a non visible fixative to keep the droplets from shedding. There are a few tiny spots of silvery metallic Tiemannite which is a rare Mercury Selenide. The matrix is a shale with a few zones of bright red Cinnabar. Choice and not often available, this is a 1960's vintage specimen, the original label only gives the county as a locale but this looks like a perfect match for specimens from the Socrates Mine.

Axinite - Gemmy crystals
stock #20.111
New Melones Spillway (Dam site), Calaveras County
California, United States
3.8 x 2.3 x 2.3 CM (small miniature/ large thumbnail (toenail))
price: $300


A very glassy cluster of transparent Axinite crystals from the collection of Brett Keller (Mineral wines). The new Melones Spillway of Calaveras county had a small but exceptional find in the 1970's. The Axinite (Ferro-Axinite) are considered to be among the best ever found in the USA. This piece is A choice small miniature that could perhaps be trimmed to thumbnail size. It has choice color, luster and transparency. No damage seen by naked eye but with a good loupe a few micro rough bits can be found. This is in far better condition than most, very close to full perfect.

Lawsonite - ex Vaux, type locality, exceptional
stock #19.1-803
Tiburon Peninsula, Marin County
California, United States
6.8 x 4 x 3.1 CM (cabinet)
price: $2950
Spring 2020

A superb specimen with exceptional provenance. From the famed Vaux collection this specimen from the original find has a 1897 date on the reverse of the label. Lawsonite is a fairly rare mineral and these are huge crystals for the specie. This old find was also the source of the best Lawsonites ever found, and this specimen is superb, one of the very best. Vaux was a very selective collector famed for his taste and care in selecting for his personal collection which was one of the best of his era. These Lawsonite crystals have sharp striated faces, choice luster, excellent blue color and reach 2 CM. I have only ever seen one specimen with larger crystals, it was the piece from the Roebling collection at the Smithsonian, but on this Vaux specimen the crystals are more perfect with better color and form. The matrix is mostly Glaucophane, in micaceous form, the whole specimen displays very well. Original handwritten Vaux label included which also notes this piece is 64.6 grams. An important piece, this is a true classic.

Axinite
stock #20.1-113
New Melones Spillway (Dam site), Calaveras County
California, United States
4.3 x 3.2 x 1 CM (miniature)
price: $290
Spring 2020

A small, super clean matrix plate of perfect, gem clear Axinite crystals. A modern classic from the best find ever made in the USA. Close inspection shows very sharp glassy crystals with several habits many of which are free standing prisms. Smokey red-brown color with fine transparency. Ex collection of Brett Keller, a choice miniature.