Demilune

Demilune
A demilune (meaning "half moon") stone is shaped like a half (or smaller) moon.

demilune
A gemstone that is shaped like a half moon
demi-parure
A small matching set or suite of jewellery, usually comprising a necklace and a bracelet, or a pair of earrings and a brooch ...

Demilune
A stone or piece of jewellery shaped like a half moon
Demiparure
A matching set of two or three pieces jewelry, usually containing a necklace, earrings, bracelet and/or a brooch or pin ...

Demilune: A stone shaped like a half-moon.
Demi-Parure: The term for two items of matching jewelry.
Schreiner Demi Parure of Brooch and Earrings ...

See also: Gemstone, Drop, Silica, Gold, Gemstones