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occurring in shades of blue
fluorite specimens have been prized since ancient times and are now among the most popular minerals in the collecting world
Azurite has been sought after since ancient times as a gem and for use in blue pigment
Natural copper is relatively soft and often found in intricate and unique structures
Sphalerite Goethite occurring in shades of blue
US$ 33.99
US$ 164.50
US$ 169.50
US$ 197.50
US$ 34.99
US$ 6650.00
US$ 324.50
US$ 135.00
