Properties & Information
Green Tourmaline
Green TourmalineSCIENCE / MINERALOGYGreen Tourmaline, often called verdelite in the gem trade, is a color category within the tourmaline group rather than one species. Much gem green tourmaline is elbaite,...
Green Tourmaline
Green TourmalineSCIENCE / MINERALOGYGreen Tourmaline, often called verdelite in the gem trade, is a color category within the tourmaline group rather than one species. Much gem green tourmaline is elbaite,...
Green Tanzurine
Green TanzurineSCIENCE / MINERALOGYGreen Tanzurine is a trademarked name for green quartz-rich material from northern Tanzania. Published gemological work has described green Tanzurine as quartz or aventurescent quartzite colored by...
Green Tanzurine
Green TanzurineSCIENCE / MINERALOGYGreen Tanzurine is a trademarked name for green quartz-rich material from northern Tanzania. Published gemological work has described green Tanzurine as quartz or aventurescent quartzite colored by...
Green Sardonyx
Green SardonyxSCIENCE / MINERALOGYSardonyx is a banded chalcedony variety composed of alternating sard-colored and lighter onyx-like layers. 'Green Sardonyx' is a commercial color term for green-and-white banded chalcedony, but much...
Green Sardonyx
Green SardonyxSCIENCE / MINERALOGYSardonyx is a banded chalcedony variety composed of alternating sard-colored and lighter onyx-like layers. 'Green Sardonyx' is a commercial color term for green-and-white banded chalcedony, but much...
Green Opalized Wood
Green Opalized WoodSCIENCE / MINERALOGYGreen Opalized Wood is fossil wood in which original plant tissue has been replaced or infilled primarily by opal rather than fully crystalline quartz. The replacement...
Green Opalized Wood
Green Opalized WoodSCIENCE / MINERALOGYGreen Opalized Wood is fossil wood in which original plant tissue has been replaced or infilled primarily by opal rather than fully crystalline quartz. The replacement...
Green Opal
Green OpalSCIENCE / MINERALOGYGreen Opal is a green variety of opal, a hydrated amorphous silica mineraloid commonly represented as SiO₂·nH₂O. Most green material is common opal without play-of-color. Its color...
Green Opal
Green OpalSCIENCE / MINERALOGYGreen Opal is a green variety of opal, a hydrated amorphous silica mineraloid commonly represented as SiO₂·nH₂O. Most green material is common opal without play-of-color. Its color...
Green Onyx
Green OnyxSCIENCE / MINERALOGYGreen Onyx is a commercially ambiguous name. True onyx is parallel-banded chalcedony, a microcrystalline quartz material with a hardness near 7, but much decorative 'Green Onyx' on...
Green Onyx
Green OnyxSCIENCE / MINERALOGYGreen Onyx is a commercially ambiguous name. True onyx is parallel-banded chalcedony, a microcrystalline quartz material with a hardness near 7, but much decorative 'Green Onyx' on...