Little cubes abut 8mm side looking like dice! (they even roll well!) rare mineral essentially sodium niobium oxide
$45ea.
10102
Julimes, Chihuahua, Mexico
Melikaria, var of quartz
These are mud cracks that were filled with quartz... maybe millions of years ago
Another view of these strange things
we have a few of these typically 4 or 5 cm. . . even sophisticated collectors want one of these because they are considered quite unusual
$48
10103
Tehachepi, California
Orthoclase var Carlsbad Twin
From old collection:various available, crystals to 2 cm, excellent shape,
$24ea.
10104
Katanga, Republic of Congo
Malachite
Highly crystallized, and very affordable 5 to 8cm
Have various from $20 to $40
10105
Corocoro, Bolivia
Copper pseudomorphs after Aragonite
Surprising pseudos because copper has none of the constituents of aragonite. The substitution accurred because the aragonite provided the slight basicity needed in reduction of copper ions to the metal and in so doing the aragonite got itself dissolved! 2cm.
$48
10106
Tanzania, Africa
Ruby in Zoisite
5 to 6 cm pieces with green zoisite crust.; cleaved and carefully selected for color. Good for lapidary work too
$25/piece
10107
South Africa
Diamond crystals
Crystals to 1mm, of natural diamond in vials. Each vial has a range of crystalline shapes and color, all very relevant to diamond; in fact it represents quite a study if one wants to; some even fluoresce in UV. This is gem-grade diamond, not the black industrial bort diamond. Contents are about 0.20g diamond (1 carat) ; needs magnificaton for best observation; very affordable as most of the production costs have already been shouldered by the jewelry industry. Presently we have a good supply: we purchased all that was available. Actual natural crystals ... not broken fragments.
$25 each vial
10108
Silver Crystals in little flasks
These are very high purity (over 99.999%) manmade silver crystals carefully selected for quality. If you like to look at things under the lens or microscope they are something to see: they redefine brilliance! Flasks are 3 cm high. We are the primary supplier. Very affordable, make excellent gifts!
We can also provide these crystals in screw-cap vials for those who want to take them out more easily. Those wanting them for scientific purposes usually prefer them in vials...please enquire for quantities