| Name: | Sard |
| Derivation: | From Sardis in Lydia (Greek) |
| Description: | Light or dark brown chalcedony. |
| Name: | Onyx |
| Derivation: | From "onyx" (Greek) nail or claw |
| Description: | Striped chalcedony, particularly black and white. |
| Name: | Sardonyx |
| Description: | Striped brown and white chalcedony. |
This natural specimen shows the bands of agate. |
This is a cut and polished specimen. It has been cut to show the layers so it looks like an eye. |