3.6" Polished Green Opal Freeform - Madagascar

This is a 3.6" tall, polished green opal freeform from Madagascar. This specimen has been polished into a smooth, free formed sculpture with a cut base to allow for stable display. The coloration in this specimen contains primarily green with sporadic red-brown.

Green opal is an amorphous variety of quartz, with the chemical composition of SiO2 · nH2O. This hydrated silicate mineraloid has the associated chemical composition and lack of crystal structure that terms this mineral conglomerate as an opal.

During formation, microscopic holes form within the silica, forming secondary silica lamellae-like strings throughout, giving the rock its inner web-like appearance.

DETAILS
SPECIES
Amorphous Quartz
LOCATION
Madagascar
SIZE
3.6" tall
SUB CATEGORY
ITEM
#59730