Baltic amber stone with fossil inclusions - spider probably attacking fly Dolichopodidae.
It weighs 0.6 grams. Measurements of stone 16x10x4mm, length of fly body and head ~ 3mm.
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.