Baltic amber stone with fossil insect - probably rare false soldier beetle Omethidae, springtail Collembola and part of ant Formicidae.
It weighs 0.2 grams. Measurements of stone 9x8x3mm, length of beetle body and head ~ 2.6mm.
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.