Baltic amber stone with fossil insect - extremely rare aquatic leaf beetle Chrysomelidae, Donaciinae probably Donacia.
It weighs 0.5 grams. Measurements of stone 17x10x4mm, length of insect body and head ~ 9mm.
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.