What jewels begin with the letter C?

Coconut Pearl

California Ruby

Calsilica

Canary Diamonds

Cape Amethyst

Cape Ruby

Carborado

Carbuncle

Carnelian

Carneole

Cat's Eye Chrysoberyl

Cultured Fresh-water Pearls

Champagne DiamondCharoite

Chinese Opal

Chrome Diapsido

Chrysocolla

Chrysolite

Chrysoprase

Cinnabar

Citrine

Cognac Diamond

Colorado Ruby

Conch

Contra Luz Opal

Coral

Corundum

Crystal

Cubic Zirconium

Cullinan Diamond

Cupids Darts

Camelian Snowflake Obsidian

Cassiterite

Clinohumite

Cairngorm

Camelian

ChalcedonyCyclop Agate