Baltic amber stone with fossil insect - are dung midge Scatopsidae, probably just emerged with unformed wings.
It weighs 0.2 grams. Measurements of stone 13x6x2mm, length of insect body and head ~ 1mm.
I can send digital high resolution picture by e-mail for personal (not commercial) use. Contact me concerning it.
If you which stone can be made into pendant for free. Please check if stone measurements are suitable for you.