set of stone eggs

egg oval stone rock calculus scale concretion gum semiprecious stone mineral gem jewel precious geodes finishing turquoise malachite lapis lazuli azure stone azure lapis lazuli aluminosilicate diopside violan calcite dolomite sodalite agate azurite labradorite charoit afghanite marble marmoreal jasper onyx sardonyx spar springhalt stringhalt aluminosilicate silicate chalcedony set kit