Intarsia 419 20 Its chemical formula is Be3Al2(Si16O18)

Its chemical formula is Be3Al2(Si16O18)

These flats are "B" grade Amethyst with coloring ranging from light to deep purple

It can have mossy and banded agate

Displays a blue-green green color with red ruby inclusions

as well as the degree of shrinkage they indicate

Intarsia 419 20 Its chemical formula is Be3Al2(Si16O18)This polished intarsia contains multiple layers of stone, with the center containing Montana Moss Agate, Del Norte Plume Agate, Peruvian Blue Opal, and Turquoise; completed with a double border frame and black backing. The cabochon is constructed from 13 individual pieces. A complex and detailed scene is created through the multiple layers and colors that overlap in this intarsia cabochon. The turquoise backing adds saturation to the semi translucent