Malachite Slice of stalactitic nodule
Katanga, Central Area, Katanga Copper zone
Democratic Republic of Congo (Zaire)
5.4 x 4.5 x .5 CM (small cabinet/ large miniature)
Sharp and colorful pattern is well presented on both sides of this cross section of Malachite. Good polish and fine contrast in the banding that is "cauliflower" in form. This sort of quality slice was at one time more common but now is quite scarce. A modern classic.
A large, somewhat crude red Cuprite octahedron (3.5 CM) with some unusual growth features and complex faces sets nicely on Malachite matrix. Two of the faces have odd holes (one circular, one triangular) and several parts of the crystal show stepped regrowths. Great color contrast, with backlighting the Cuprite glows a brilliant cherry red. We have not backlit the specimen as that can be misleading, but the cuprite is fully translucent and seems to be facet grade clear red inside. Ex John Marshall collection (his label and card are included) acquired in 1990 from G. Gauthier.
Sections of stalactitic Malachite can be quite esthetic, especially when the form is more complex and with good color banding. This is an excellent example cut from materials collected in the 1990s. This style is now becoming rare with the "cauliflower" form. Complete edge rind all around, and polished on both sides.
Sections of stalactitic Malachite can be quite esthetic, especially when the form is more complex and with good color banding. This is an excellent example cut from materials collected in the 1990s. Far better quality and form than average for this sort of slab. The double eye on this piece is especially striking. Polished on both sides but the "back" as seen was near to top knob of the malachite form and so has much more rind. Complete with great form and contrast.
One of the most exciting new finds this year are these very colorful pseudomorphs from the Congo. This specimen is especially well-formed with big (up to 6.2 cm) sharp crystals showing Azurite form. The crystals are now hollow casts with a small amount of residual Malachite seen inside with magnification. The entire specimen is covered with tiny, sharply terminated crystals of deep blue Chrysocolla. In fine condition esthetic and eye-catching.
Striking, esthetic and unusual, this is a fine, undamaged piece with an "odd" color hue. The Shaba Dioptase can be quite impressive but rarely this delicate and sculptural, with no matrix. The color, in person, looks almost a Malachite green but with a brilliant glassy luster, there is good transparency too as seen in some of the best Tsumeb Dioptase. A fine specimen from any place this is especially nice for Katanga area.
A fine, fibrous crystallized primary malachite from the prolific mines of Katanga. Excellent color, satin sheen and luster, no damage. Malachite crystals over 3 CM abound. The recent finds of this material have been well appreciated, affordable and very attractive. Not all fine minerals are expensive!