polished azure turquoise pebble

semiprecious mineral gem stone jewel precious geodes pebble shingle beach boulder nodule oval rounded round rotund brushed faceted polished burnished bright brilliant shiny shining glossy pattern turquoise aluminum phosphate copper halkosiderit arizonite agapit agapitus arabic stone aztec genvudit ionite kala callan kallais azure spar heavenly stone sinai turkiz henwood blue cyan azure cerulean skyey skiey sky-blue