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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:  36x28x24  mm / 1.3x1.2x1.0 inches
Weight:  17.9 grams / 0.6 ounces
Origin: Found in White Desert, Farafra Oasis, Egypt

Although this sphere is included, it has a beautiful iridescence.

Name: Smoky Quartz sphere
Dimensions: 71 mm / 2.8"
Weight: 476 grams / 1.08 lbs
Origin:  Brazil

Here we have for you a nice looking tumbled individual of a Sahara Desert NWA unclassified meteorite weighing 9.5 grams. Its dimensions are 22x18x13mm.  This never classified North West Africa stone was found in the Sahara desert around 2000.

It's a good quality individual NWA meteorite specimen. Would be a beautiful addition to any new or existing collection. Comes with a Canagem Collection specimen card.

Product Type: Moldavite (Impactite Green Melt Glass)

Approx Weight (per piece): 2.55ct

Size: 10mm

Shape: Trilliant Cut

Color: Rich Green

Clarity: VSI

Origin: Chlum Region, Czech Republic

Product Type: Sapphire
Approx Weight (per piece): 2.2ct
Size: 8mm
Shape: Round Cut
Color: Midnight Blue
Clarity:  Nice crystal
Origin:  Madagascar
Treatment: Diffusion*

*This gemstone was heated and surface diffused to improve its appearance.  This is a routine and safe treatment that is accepted worldwide.

Product Type: Ruby
Approx Weight (per parcel): 10.25tcw
Size: Mixed Size
Shape: Mixed Cuts
Color: Red
Clarity: SI Slight Inclusion
Origin: Madagascar 

NOTE: Treatment by Lead Glass Filling

Product Type: Silky Aquamarine

Approx Weight (per piece): 5.8ct

Size:    12x10mm

Shape: Oval Cabochon

Color:   Light Blue

Clarity:  Translucent

Origin:  Africa

Product Type: Sunstone
Approx Weight (per piece): 1.26ct
Size: 8mm
Shape: Round Cut
Color: Orange Red
Clarity: Semi Translucent - fine schiller
Origin: India

Sunstone is a type of feldspar, its color is often attributed to the presence of tiny copper platelets or hematite inclusions within the stone.  The most common color of sunstone is a warm and vibrant orange or reddish-brown, often referred to as "Heliolite" due to its association with the sun. However, it can also occur in shades of yellow, pink, peach, and even green.

Sunstone is renowned for its unique optical phenomenon called adularescence. This effect creates a shimmering or glowing appearance on the surface of the stone, caused by the reflection of light from within the inclusions.  It is relatively durable, with a hardness ranging from 6 to 6.5 on the Mohs scale. While it's suitable for jewelry, care should be taken to avoid rough handling and exposure to extreme conditions.

Sunstone is associated with warmth, positive energy, and leadership qualities. It's thought to bring joy, vitality, and encourage independence and originality.

Product Type: Silky Aquamarine

Approx Weight (per piece): 5.1ct

Size:    12x9.7mm

Shape: Oval Cabochon

Color:   Light Blue

Clarity:  Silky

Origin:  Brazil