Baltic amber stone with fossil insect - probably marsh beetle Scirditae with well preserved elongated genitalia.
It weighs 0.4 grams. Measurements of stone 13x9x6mm, length of beetle max ~ 5mm.
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.