Baltic amber stone with fossil inclusion - probably parasitic mite on long-legged fly abdomen Dolichopodidae.
It weighs 3.1 grams. Measurements of stone 25x24x7mm, length of insect body and head ~ 2.3mm.
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.