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OneO2
Strontium atom, with element's symbol, number, mass and element type color.
Strontium atom, with element's symbol, number, mass and element type color.
Jochen
Celestine,gemstone with pleochrism and rainbow colors
Celestine,gemstone with pleochrism and rainbow colors
Jochen
Celestine on turn table on a white background
Celestine on turn table on a white background