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Chrysocolla, a hydrous copper silicate, is often mistaken for turquoise due to its rich blues and blue-greens. It often also occurs with colors of rust, copper, black, white and reddish...

Chinese Turquoise is a blue-green to light yellow-green stone, with inclusions of brown, black and rust. These colors often occur in speckled patterns throughout the stone. Turquoise is one of...

Chinese Turquoise is a blue-green to light yellow-green stone, with inclusions of brown, black and rust. These colors often occur in speckled patterns throughout the stone. Turquoise is one of...

Chinese Turquoise is a blue-green to light yellow-green stone, with inclusions of brown, black and rust. These colors often occur in speckled patterns throughout the stone. Turquoise is one of...

Chrysocolla, a hydrous copper silicate, is often mistaken for turquoise due to its rich blues and blue-greens. It often also occurs with colors of rust, copper, black, white and reddish...

Psilomelane describes a group of hard black manganese oxides, including Hollandite and Romanechite. Psilomelane consists of hydrous manganese oxide with variable amounts of barium and potassium. Psilomelane is erroneously, and...

Chinese Turquoise is a blue-green to light yellow-green stone, with inclusions of brown, black and rust. These colors often occur in speckled patterns throughout the stone. Turquoise is one of...

Chinese Turquoise is a blue-green to light yellow-green stone, with inclusions of brown, black and rust. These colors often occur in speckled patterns throughout the stone. Turquoise is one of...

Chinese Turquoise is a blue-green to light yellow-green stone, with inclusions of brown, black and rust. These colors often occur in speckled patterns throughout the stone. Turquoise is one of...

Chrysocolla, a hydrous copper silicate, is often mistaken for turquoise due to its rich blues and blue-greens. It often also occurs with colors of rust, copper, black, white and reddish...

Onyx is a black and white banded Chalcedony, a cryptocrystalline Quartz. It is often thought of as an all-black stone, and much of the black Onyx on the market has...

Chinese Turquoise is a blue-green to light yellow-green stone, with inclusions of brown, black and rust. These colors often occur in speckled patterns throughout the stone. Turquoise is one of...