Amethyst casts after rhombic Calcite crystals. The former Calcite crystals have dissolved away leaving angular, hollow casts of sparkling purple Quartz.

Unusual pseudomorph of Quartz that has replaced a floater cluster of Gypsum var. Selenite.

Two connected crystals of Malachite after Azurite pseudomorphs. Rich green with a velvety surface luster. Comes with an old Al McGuinness label.

Undamaged crystals group of Hematite pseudomorphs after octahedral magnetite crystals from the 2002 find in Argentina. Fascinating, highly sculptural specimen with bright, silvery metallic luster. Largest crystals is 2.5cm in size. Ex. Chuck Trantham collection.

Rare and unusual pseudomorph of Sulfur that ahs replaced a well formed, terminated Selenite crystal. Ex. Chuck Trantham collection.

Achtaragdite is a rare pseudomorph of a hydrogrossular-chlorite-carbonate mineral after what is believed to be Helvite. This is a little understood psuedo likely found many decades ago at the type locality for Grossular garnet in Siberia. It is a fine example with a well formed tetrahedron of the form of the former Helvite crystal. 

Sharp crystals of blue Azurite intermixed with green crystals of Malachite after Azurite pseudomorphs on a light matrix with additional yellow/green mineralization. Undamaged crystals with pseudomorphs that reach 2.2cm, some of which are double-terminated.

Large, complete dodecahedral crystal of Chlorite after Garnet. There is an indentation on the back face, otherwise it has perfect flat faces all around. Ex. Chuck Trantham collection acquired from Dyck's Minerals in 1987.

Old speciemn of Malachite pseudomorphs (presumably after Azurite) with areas of Turquoise. Seldom seen specimen that comes with two old labels, one 'the Masimer collectiion' and the other is the "Schneider's' of Poway, California.

A 3.2cm crystal of the double pseudomorph of Chrysocolla that has replaced a crystal of Malachite after Azurite. Scattered crystals of orange Wulfenite are present on the matrix.

12 mirror lustrous cubes of Bixbyite to 3mm grown atop a 1cm pseudomorph of Hematite after Garnet, all grown atop a gemmy Topaz crystal.

Cluster of prismatic Azurite and Malachite after Azurite crystals with Arsentsumebite and Cerussite. I just the love the highly colorful specimens from this mine and this is a prime example of such a specimen. A very colorful mixture of blue, deep green Malachite, lighter green Arsentsumebite, and small crystals of Cerussite scattered about. Comes with an old Phil Scalisi label.

Wreath-like formation of Malachite pseudomorphs after Azurite. Large, blocky undamaged crystals. A floater covered by velvety Malachite all around.

Fine quality, complete pseudomorph of Limonite after Pyrite. Striations on the surface from the original Pyrite are evident. From the Judy & Chris Cook pseudomorph collection.

Scalenohedral Calcite crystals that have been pseudomorphed to golden colored Smithsonite. These are unusual specimens that are no longer being found. A high quality, undamaged example of this find.