I work with cabochons a lot on my side jewelry business, I'd say 6-8mm would be the ball park range for what you need. 14mm is very large haha
and for twinkles, probably around the same. I bought a few different sizes of flatbacks a little while ago, I'll have to go fish out the packages to give you the sizes I have that would probably work.
Alrighty! Perfect! I had ordered the 8mm cabochons by chance before you posted that, and you're right! The 8mm is the perfect size that I needed for my G3 Diva pose!
6mm- G1 babies
8mm- Both male and female G1s(I put them up to my loving families for comparisons). G3 Diva pose.
10mm- G3 poses (other than Diva)
I'll compare other ponies some other time. And here are some photo references for those whom do not know what a cabochon is:
"a gemstone which has been shaped and polished as opposed to faceted. The resulting form is usually a convex top with a flat bottom."
But what I have is just a clear glass. There are many options though.
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