As you can see, quahog pearls come in a wide variety of shapes and quality. © Kojima Pearl. Used with permission.
Opaque Purple Calcareous Concretions Rough
As you can see, quahog pearls come in a wide variety of shapes and sizes. © Kojima Pearl. Used with permission.
Article: Quahog Pearl Buying Guide
Credit: Kojima Pearl
| Gemstone | Calcareous Concretions |
| Natural or man made | Natural |
| Gem State | Rough |
| Color | Purple, White |
| Transparency | Opaque |
| Multi-color | Bi-color |