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Acanthite
Acanthite
Imiter, Atlas Mountains, Morocco
Beryl var. Aquamarine
Beryl var. Aquamarine
Quy Chau District, Nghe An Province, Vietnam
Heulandite with Stilbite
Heulandite with Stilbite
Jalgon, Maharashtra State, India
Olmiite on matrix
Olmiite on matrix
N Chwanning II Mine, Kuruman, Republic of South Africa
Opal var. Hyalite
Opal var. Hyalite
San Luis Potosi, Mexico
Zoisite Var. Tanzanite
Zoisite Var. Tanzanite
Arusha, Merelani, Tanzania
Boytroidal Opal

Boytroidal Opal

sold
Locality
Durango, Mexico
Minerals
Opal
Dimensions
2.9 x 2.5 x 1.5 cm
Size class
Thumbnail
SID
OPAL9

This comes from a recent discovery of a small-scale mining operation around Durango, Mexico. Some of the pieces I looked at still had roots on them, indicating a deposit relatively close to the surface. the opal itself is remarkably clear and intact. The fluorescence is extreme under both long wave and short wave (short wave pictured). 

This piece is a neat miniature, where the opal seems to have "percolated," up on the chalcedony matrix. Mounted on black acrylic base. Pictures show both sides.

Without damage.

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