Aragonite is a low-temperature, near surface mineral that is colorless to white or gray, can be stained blue, green, red, or violet.  It is colorless in transmitted light.  It has a moh's scale hardness of 3.5-4.  

Objects: Aragonite Export: JSON - XML - CSV Clay Seals and Sealings

Object U Number Museum Number (UPM Date Reg Number) Museum Number (BM Registration Number) Museum Number (UPM B-number) Description (Catalog Card)
11896 30-12-31 (none) (none) Cylinder Seal. Pale green calcite. (1 side decayed) human-headed bulls & heroes fighting.
7916 (none) (none) B16906 Stamp flat seal. One side convex. Calcite. Greyish. Above a reclining beast, possibly a jackal? and below a second beast with big head.
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