What term refers to gems found away from their primary source?

What term refers to gems found away from their primary source?

• A. Rhinestone
• B. Rough Girdle
• C. Selective Absorption
• D. Secondary Deposit

Answer: (D)

Gems found away from where they originally formed are described by the term secondary deposit. This captures the idea that the stone has been transported from its primary source—eroded from its original rock and carried by water or other means to a new location where it can be deposited. In diamonds, for example, the primary source is often a kimberlite pipe, while the stones that end up in riverbeds or other sediment become part of secondary deposits. The other options refer to different concepts: rhinestone is an imitation stone, rough girdle relates to a feature of the stone’s edge or rough form, and selective absorption describes how a gem’s color is perceived.

Gems found away from where they originally formed are described by the term secondary deposit. This captures the idea that the stone has been transported from its primary source—eroded from its original rock and carried by water or other means to a new location where it can be deposited. In diamonds, for example, the primary source is often a kimberlite pipe, while the stones that end up in riverbeds or other sediment become part of secondary deposits. The other options refer to different concepts: rhinestone is an imitation stone, rough girdle relates to a feature of the stone’s edge or rough form, and selective absorption describes how a gem’s color is perceived.