Gemstones
- Agate
- Alexandrite
- Amber
- Amethyst
- Aquamarine
- Aventurine quartz
- Bloodstone
- Carnelian
- Cat's eye
- Chrysoberyl
- Chrysoprase
- Citrine
- Coral
- Demantoid garnet
- Diamond
- Emerald
- Garnet
- Iolite
- Labradorite
- Lapis lazuli
- Mandarin garnet
- Moonstone
- Onyx
- Opal
- Peridot
- Rock crystal
- Rose quartz
- Ruby
- Rutile quartz
- Sapphire
- Smoky quartz
- Spinel
- Sunstone
- Tanzanite
- Tiger's eye
- Topaz
- Tourmaline
- Tsavorite
- Turquoise
- Zircon
NewsletterAgate
(ag'-ate)
13th c.; lat. acathes, gr. akhatês
A variety of chalcedony with colored bands or irregular clouding used in jewelry and also to make fine cameos, bowls, etc.
13th c.; lat. acathes, gr. akhatês
A variety of chalcedony with colored bands or irregular clouding used in jewelry and also to make fine cameos, bowls, etc.
Color
Translucent , all colors in bands or layers
Family
Chalcedony - Cryptocristalline quartz
Chemical composition
SiO2
Crystal system
Hexagonal
Hardness (Mohs scale)
6,5 - 7
Specific gravity
2,60 ±0,05
Refractive index
1,537 ±0,02
Birefringence
Invisible
Optical character
None (aggregate)
Consult list of gems available on the Chanthaburi market...
Consult list of gems available on the Jaipur market...
