Ahh yes, per the amazing Three Graces site - a crescent moon in diamonds. Interesting that it wasn’t a popular motif but not unheard of. Good.
That brooch is exactly what I want for my Queen of the Night. Except I want two. And I don't have $3650.00 to spend on it.
*weeps bitter tears*
So if you find a similar crescent moon for less than 3-grand do let me know! :P