Baltic amber stone with fossil insect - mayfly Ephemeroptera.
It weighs 0.3 grams. Measurements of stone 21x10x4mm, length of mayfly body and head ~ 5mm, wingspan ~ 10mm.
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.