Wearable Art LTD

When it is concentrically banded (often in rather wild patterns) it is called by the subvariety name
"agate". When it is in flat layers/bands it is called by the subvariety name "onyx". [Note: Many
non-banded forms of chalcedony - such as moss agate - are often erroneously called 'agates'.
True agate is concentrically banded. Mottled and included chalcedonies are more properly called
simply 'chalcedony.' Agatized wood is the name given to fossil wood where the replacement of the
wood is by chalcedony, but the banding in this case is due to the wood structure - not concentric
deposition of the chalcedony - and the material is chalcedony, not true agate.]

They are found in all parts of the globe, including all 50 states of the USA., in many colors
and color combinations, and in sedimentary, igneous, and metamorphic rocks. Chalcedony
includes:

sard, plasma, prase, bloodstone, onyx, sardonyx, chrysoprase, thundereggs,
agate, flint, chert, jasper, petrified wood, and petrified dinosaur bone ,
Abakusz-kö, Agate-Jasper,Amarillo Stone, Amberine,
Azurchalcedony,Binghamite, Blue Lace Agate,Botswana Agate,Brecciated
Agate, Buhrstone, Carnelian, Cloud Agate,Crazy lace
Agate,Cubosilicite,Damsonite,Dendritic Agate,Enhydro Agate,Eye
Agate,Fairburn Agate,Fire Agate,Fortification Agate,Fossil Agate,
Haema-ovoid-agates,Iris Agate, Keystonite Chalcedony ,Laguna Agate,Lake
Superior Agate, Landscape Agate,Mexican Lace Agate,Moss
agate,Mtorodite,Myrickite,Nipomo Agate,Pigeon Blood Agate, Plume Agate,
Quartzine,Riband Agate, Seftonite,Tigers Eye,Vogelaugenachat .

19th Century Jewish amulet,
made of Carnelian(red
Chalcedony).This material was
used by royalty & high officials in
ancient times for seal rings, since
it does not tend to stick to bees
wax, the type they used for
sealling documents, and stamping
it.