1-2. Alloy ratio and name of type
Gold leaf is generally alloyed by mixing silver and copper in a certain ratio, and the name is determined by the ratio.
The names and ratios of gold, silver, and copper are shown below.
| Type | Gold (Unit: %) | Silver (Unit: %) | Copper (Unit: %) | Color |
| Gomoiro | 98.912 | 0.495 | 0.593 | Redness |
| No. 1 color | 97.666 | 1.357 | 0.977 | Redness |
| No. 2 color | 96.721 | 2.602 | 0.677 | Redness |
| No. 3 color | 95.795 | 3.535 | 0.670 | Redness |
| No. 4 color | 94.438 | 4.901 | 0.661 | Standard |
| Nakairo | 90.900 | 9.090 | 0.000 | Bluish |
| Sanbushoku | 75.534 | 24.466 | 0.000 | Bluish |
| Light blue | 59.740 | 40.250 | 0.000 | Bluish |
| Sadairo | 58.680 | 41.310 | 0.000 | Bluish |
| White gold | 50.000 | 50.000 | 0.000 | White Taste |