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Dioptase from the Democratic Republic of Congo (year 2024).
Dimensions: 51mm x 41mm x H: 28mm.
Weight: 63g (with acrylic base)
Density: Approx. 3.3 to 3.4 g/cm³.
Hardness: 5 on the Mohs scale.
Color: Emerald green.
Crystal system: Trigonal.