QuartzChert - cryptocrystalline quartz
Agate - banded variety of chaledony
Amethyst - purple
Avanturine - feebly translucent chalcedony
Carnelian - flesh red chalcedony
Rose Quartz - rose colored
Chalcedony - microcrystalline quartz
Tiger Eye - pseudomorph of asbestos
Chrysoprase - apple green chalcedony
Citrine - yellow
Sapphire Quartz - blue colored
Cat's Eye - chatoyant
Smoky Quartz - brown to black
Flint - microcrystalline quartz
Rock Crystal
Prase - leek green chalcedony
Plasma - green chalcedony
Moss Agate - variety of chaledony
Jasper - red or brown chalcedony
Hornstone - flint
SiO2
Quartz_AmethystChert - cryptocrystalline quartz
Agate - banded variety of chaledony
Amethyst - purple
Avanturine - feebly translucent chalcedony
Carnelian - flesh red chalcedony
Rose Quartz - rose colored
Chalcedony - microcrystalline quartz
Tiger Eye - pseudomorph of asbestos
Chrysoprase - apple green chalcedony
Citrine - yellow
Sapphire Quartz - blue colored
Cat's Eye - chatoyant
Smoky Quartz - brown to black
Flint - microcrystalline quartz
Rock Crystal
Prase - leek green chalcedony
Plasma - green chalcedony
Moss Agate - variety of chaledony
Jasper - red or brown chalcedony
Hornstone - flint
SiO2
Quartz_CitrineChert - cryptocrystalline quartz
Agate - banded variety of chaledony
Amethyst - purple
Avanturine - feebly translucent chalcedony
Carnelian - flesh red chalcedony
Rose Quartz - rose colored
Chalcedony - microcrystalline quartz
Tiger Eye - pseudomorph of asbestos
Chrysoprase - apple green chalcedony
Citrine - yellow
Sapphire Quartz - blue colored
Cat's Eye - chatoyant
Smoky Quartz - brown to black
Flint - microcrystalline quartz
Rock Crystal
Prase - leek green chalcedony
Plasma - green chalcedony
Moss Agate - variety of chaledony
Jasper - red or brown chalcedony
Hornstone - flint
SiO2
Quenselite PbMn+++O2(OH)