Source for melee diamonds

Hello all, I am a jewelry designer in the San Francisco Bay Area
looking for a reliable and reasonable source for melee white and
yellow diamonds. Since I am just starting out, I can only afford
average quality stones, eye clean face up is OK. I will be using
these small diamonds in flush and tube settings. Any suggestion will
be of a great help to me.

Thanks,
Marguerite Chiang
@guerite57