Baltic amber stone with fossil insect - unusual false darkling beetle Melandryidae, probably Hypulini.
It weighs 0.6 grams. Measurements of stone 16x7x5mm, length of insect body and head ~ 5.6mm.
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.