Onyx Square Coaster Set 3.75" x 3.75" x .25" Albite though no item at Crystal

though no item at Crystal Joys is exactly the same as every item uses a unique stone that is non-fabricated

Hand carved by the Venturini family

With a variety of colors and sizes available

This formation is the most famous locality for rare

Onyx Square Coaster Set 3.75" x 3.75" x .25" Albite though no item at CrystalBeautiful Onyx Square Coaster Set. Each coaster measures individually 3. 75" x 3. 75" x . 25". Features natural colors of amber, white, and grey. Agate and Onyx are both varieties of layered chalcedony that differ only in the form of the bands. Agate has curved bands and onyx has parallel bands. Onyx primarily refers to the parallel banded variety of the silicate mineral chalcedony and is rated at a 7 on the Mohs hardness scale. The colors of its