| Month | Traditional | Alternative | Other suggestions | Relevant colour(s) |
| January | Garnet | Rose quartz | Red / pink | |
| February | Amethyst | Amethyst quartz | Purple | |
| March | Aquamarine | Bloodstone | Malachite | Pale blue / deep green |
| April | Diamond | Rock crystal | Cubic zirconia (CZ) | Colourless |
| May | Emerald | Aventurine quartz | Mid green | |
| June | Moonstone | Pearl | Mother of Pearl | Soft whites |
| July | Ruby | Carnelian | Red / orange | |
| August | Peridot | (Sardonyx)* | Banded Carnelian | Lime green / (red/white stripe)* |
| September | Sapphire | Lapis lazuli | Sodalite | Royal blue |
| October | Opal | Paua shell, Abalone** | Multicoloured | |
| November | Golden topaz | Citrine | Tiger's eye | Golden yellow |
| December | Blue zircon | Turquoise | Amazonite | Pale blue |
* Sardonyx is a dyed agate which was very popular in Victorian times but is hardly seen now.
**Paua shell and abalone are now sometimes known as marine or sea opal.