Baltic amber stone with fossil inclusion - moth or caddisfly larval case for which construction insects parts where used.
It weighs 0.7 grams. Measurements of stone 19x10x5mm, length of case ~ 3.7mm.
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.