| Name | Meaning | Gender | Origin |
|---|
| Citrine | | Unisex | Hebrew |
| Clara | bright, clear | Female | Latin |
| Clay | adhere, mortal | Male | English |
| Clifford | Lives by the ford near the cliff
| Male | English |
| Coal | | Male | Hebrew |
| Cobalt | | Male | Hebrew |
| Coby | Supplanter, Representative | Male | English |
| Cole | coal, victory of the people | Male | English |
| Copper | A reddish brown metal - as in copper penny coins. Also slang for a police officer. | Female | Word |
| Copper | A reddish brown metal - as in copper penny coins. Also slang for a police officer. | Female | Word |
| Coral | Greek for small stone. Sincere or from the sea. Marine animal whose skeletons form coral reefs. | Female | Nature |
| Creed | Creed | Unisex | English |
| Crystal | Variant of Christiana. Follower of Christ.
| Female | |
| Crystal | Variant of Christiana. Follower of Christ.
| Female | |
| Cuba | Island country in the Caribbean. | Male | Place-name |
| Cyan | greenish blue color | Male | English |
| Dar | Pearl | Unisex | Hebrew |
| Dark | | Unisex | Hebrew |
| Diamond | In The Rough | Female | |
| Dustin | valiant fighter, dark stone | Male | Norse |
| Eban | stone | Male | Hebrew |
| Ebenezeer | | Unisex | Hebrew |
| Ebenezer | Rock of Help | Male | Hebrew |
| Ebony | A tropical tree of southern Asia with hard, dark wood | Female | English |
| Eden | delightful, adornment, paradise | Female | Hebrew |