| Added by |
 Alain Martineau
|
| General Description : | Agate is a microcrystalline variety of silica, chiefly chalcedony, characterised by its fineness of grain and brightness of color. Although agates may be found in various kinds of rock, they are classically associated with volcanic rocks and can be common in certain metamorphic rocks. |
| Face value | 7 Cents |
| Catalog code (Michel) | AU 531 |
| Catalog code (Scott) | AU 559 |
| Catalog code | Yvert et Tellier AU 504 Stanley Gibbons AU 550 Seven Seas Stamps AU 587 Brusden-White AU 64 |
| Series | Australian Marine Life & Gemstones |
| Place in series | 6 |
| Stamp colour | Multicoloured |
| Watermark | None |
| Stamp use | Definitive stamp |
| Print run | 688.541.500 |
| Issue date | 11/07/1973 |
| Designer | John Mason |
| Print technique | photogravure |
| Printed by | Note Printing Branch, Reserve Bank of Australia |
| Perforation | COMB 15:14 |
| Height | 24.00 mm |
| Width | 20.00 mm |
| Catalog prices | Used stamp $0.20 Unused stamp $0.25 |
