| Ruby | Red, Pink | 1.00 – 3.00 | 3.97 – 4.05 | 0.50 – 5.00 | Higher carat sizes are rare. |
| Sapphire | Blue, Pink, Yellow | 1.00 – 5.00 | 3.95 – 4.03 | 0.50 – 10.00 | Various colors available (fancy sapphires). |
| Emerald | Green | 1.00 – 3.00 | 2.67 – 2.78 | 0.50 – 5.00 | Often included (internal fractures). |
| Amethyst | Purple | 1.00 – 20.00 | 2.65 | 0.50 – 30.00 | Large sizes common and affordable. |
| Topaz | Blue, Yellow, Pink | 1.00 – 10.00 | 3.49 – 3.57 | 0.50 – 20.00 | Blue topaz is often treated. |
| Garnet | Red, Green, Orange | 1.00 – 5.00 | 3.1 – 4.3 | 0.50 – 10.00 | Various types like Pyrope, Almandine, etc. |
| Aquamarine | Blue, Blue-Green | 1.00 – 5.00 | 2.68 – 2.74 | 0.50 – 15.00 | Light to dark blue hues. |
| Peridot | Green | 1.00 – 3.00 | 3.2 – 4.3 | 0.50 – 10.00 | Sensitive to temperature changes. |
| Tourmaline | Multicolor, Green, Pink | 1.00 – 5.00 | 3.02 – 3.26 | 0.50 – 10.00 | Wide range of colors available. |
| Opal | Multicolor, White, Black | 1.00 – 5.00 | 1.98 – 2.20 | 0.50 – 10.00 | Sensitive to water and heat. |
| Tanzanite | Blue, Violet | 1.00 – 5.00 | 3.35 | 0.50 – 10.00 | Rare and typically treated. |
| Citrine | Yellow, Orange | 1.00 – 5.00 | 2.65 | 0.50 – 20.00 | Often confused with Topaz. |
| Spinel | Red, Blue, Pink | 1.00 – 3.00 | 3.60 – 4.05 | 0.50 – 5.00 | Often mistaken for Ruby or Sapphire. |
| Alexandrite | Green, Red (color change) | 1.00 – 3.00 | 3.68 – 3.78 | 0.50 – 5.00 | Rare and valuable due to color change. |
| Morganite | Pink, Peach | 1.00 – 5.00 | 2.71 – 2.90 | 0.50 – 10.00 | Often used in engagement rings. |