close-up of aragonite polymorphous mineral on a white background

appearance aragonite background beautiful beige bohemia brown calcite calcium carbonate closeup cluster collectable collecting collection crystal crystalline cut czech czechia design detail form gem gemstone geological geology hard hobby hridelec isolated item jewelry mineral mineralogy natural nature nobody nopeople northeast nova object one opaque origin out paka panoramic patch pattern piece polymorphous precious rare raw republic rock rough sample science semiprecious single specimen stain stone structure surface texture uncut uneven white whole wrinkled yellow