| Month | Birthstone | Japanese reading |
|---|---|---|
| JAN | Garnet | Zakuroishi |
| FEB | Amethyst | Murasakizuisho |
| MAR | Bloodstone/Aquamarine | Kesseki/Rangyoku |
| APR | Diamond | Kongouseki |
| MAY | Emerald | Suigyoku |
| JUN | Pearl/Moonstone/Ruby | Shinju/Gecchouseki/Kougyoku |
| JLY | Sardonyx | Benishimamenou |
| AUG | Peridot | Sardonyx/Kanranseki |
| SEP | Sapphire | Seigyoku |
| OCT | Opal/Tourmaline | Tanpakuseki/Denkiichi |
| NOV | Topaz | Ougyoku |
| DEC | Turquoise/Zircon | Torukoishi/Fushinshikou |