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Psilomelane Slabs
Psilomelane is actually manganese oxide. Silver Tree, or Psilomelane in Quartz and Silver Crown Psilomelane are manganese oxide in cryptocrystalline quartz. It is a very hard agate material that is easy to cut and polish. However, Psilomelane tends to gum up saw blades. So make sure your blades are well dressed before and after slicing.

Psilomelane in Quartz (Silver Tree Psilomelane) came from the Golden Crown Mine, which was close to the long closed Silver Crown Mine. The Golden Crown Mine produced a tiny small amount of golden and red agate with whisps of psilomelane, as well as Psilomelane in Quartz (Silver Tree Psilomelane). Sadly, both mines were closed years ago and this material has become more difficult to obtain.

Psilomelane cuts like any other agate and takes a high polish with tin oxide, cerium oxide or diamond. It cuts very attractive gems. Mohs hardness 7.


Example of Psilomelane in Quartz (Silver Tree Psilomelane) Cabochon

Example of Silver Crown Psilomelane Cabochon

 Item number: Slab701R - Psilomelane in Quartz (Silver Tree Psilomelane) Slabs - $18.00
Locality: Chihuahua, Mexico

Two slab parcel measures approximately
1 at 1/4" thick
1 at 7/32" thick.

Ruler is in inches.


 Item number: Slab702R - Psilomelane in Quartz (Silver Tree Psilomelane) Slabs - $22.00
Locality: Chihuahua, Mexico

Two slab parcel measures approximately
1 at 9/32" thick
1 at 9/32 to 1/4" thick.

Ruler is in inches.


 Item number: Slab703R - Psilomelane in Quartz (Silver Tree Psilomelane) Slabs - $25.00
Locality: Chihuahua, Mexico

Two slab parcel measures approximately
1 at 9/32 to 5/16" thick
1 at 9/32" thick.

Ruler is in inches.


 Item number: Slab704R - Psilomelane in Quartz (Silver Tree Psilomelane) Slab - $25.00
Locality: Chihuahua, Mexico

Measures approximately 7/32" thick.

Ruler is in inches.


 Item number: Slab705R - Psilomelane in Quartz (Silver Tree Psilomelane) Slab - $25.00
Locality: Chihuahua, Mexico

Measures approximately 1/4" thick.

Ruler is in inches.


 Item number: Slab706R - Psilomelane in Quartz (Silver Tree Psilomelane) Slab - $25.00
Locality: Chihuahua, Mexico

Measures approximately 3/16" thick.

Ruler is in inches.


 Item number: Slab707R - Psilomelane in Quartz (Silver Tree Psilomelane) Slab - $25.00
Locality: Chihuahua, Mexico

Measures approximately 1/4" thick.

Ruler is in inches.


 Item number: Slab708R - Psilomelane in Quartz (Silver Tree Psilomelane) Slabs - $25.00
Locality: Chihuahua, Mexico

Two slab parcel measures approximately
1 at 7/32" thick
1 at 1/4 to 7/32" thick.

Ruler is in inches.


 Item number: Slab710R - Psilomelane in Quartz (Silver Tree Psilomelane) Slab - $30.00
Locality: Chihuahua, Mexico

Measures approximately 1/4" thick.

Ruler is in inches.


 Item number: Slab711R - Silver Crown Psilomelane Slab - $10.00
Locality: Chihuahua, Mexico

Measures approximately 9/32 to 1/4" thick.

Ruler is in inches.


We also have ROUGH of this material.

Assortments     Agates    Alunite    Angelite    Aventurine    Calcite    Cacoxenite    Charoite    Chrysocolla    Clam Chowder Stone    Coprolite    Crinoid Marble    Dalmatian Stone    Dinosaur Bone    Dolomite    Fossil Coral    Fossil Stone    Goldstone    Hypersthene    Indian Paint Rock    Jade    Jaspers    Lapis Lazuli    Lepidolite    Montana Bark    Mookaite    Nunderite    Obsidians    Petrified Wood    Pietersite    Pink Elephant Stone    Pink Lace Rosetta Stone    Printstone    Psilomelane    Quartz    Rhodochrosite    Rhodonite    Rhyolites    Ruby in Fuchsite    Ruby in Zoisite    Ruby with Hornblende    Selected Materials    Seraphinite    Serpentine    Sodalite    Thulite     Tiffany Stone    Tiger Eye    Tiger Iron    Turquoise    Unakite    Variscite   
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