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You will receive one of the Pseudomorphs pictured.

Pseudomorphs are mineral specimens that have the external shape of one mineral but are composed of another.  The pseudomorph goethite after marcasite forms when marcasite is exposed to oxidizing conditions and starts to oxidize and break down. As the marcasite breaks down, goethite replaces it in the crystal structure, preserving the shape of the original marcasite crystal. The resulting specimen appears as a marcasite crystal, but is actually composed of goethite.

The Farafra Oasis, in the White Desert, has been known for a number of years to deliver incredible pseudomorph specimens. The pseudomorphs occur within the Cretaceous Khoman Chalk, from which the White Desert derives its name.

These specimens are remarkable for their relatively sharp marcasite crystal forms in aesthetic crystal clusters. They are in excellent condition.  This collector's specimen is unique, of great quality and ready for display.

Name: Goethite After Marcasite Pseudomorph
Specimen Size:  Miniature-Sized Specimen
Dimensions:  23-28x20-23  mm / 0.9-1.1x0.8-0.9 inches
Weight:  17-23 grams / 0.6-0.8 ounces
Origin: Found in White Desert, Farafra Oasis, Egypt

Product Type: Natural Quartz Cats Eye
Approx Weight (per piece):  1.18ct
Size:  10x5mm
Shape: Marquise Cabochon 
Color: Brown
Clarity: Opaque
Origin: Brazil 
Treatment:  Untreated

NOTE: There is a small imperfection on the base; see picture #4

Quartz Cats Eye is a type of gemstone that exhibits an optical phenomenon called chatoyancy, which  creates a luminous band resembling a cat's eye. It is caused by fibrous inclusions within the quartz that reflect light in a concentrated manner. The gemstone comes in various colors, with golden yellow to brown being the most common.

Product Type: Rhodonite
Product ID: RHPK3078
Approx Weight (per piece): 1.60ct
Size: 8x6mm
Shape: Oval Cabochon
Color: Pink
Clarity: Fine Crystal
Origin: Africa