Baltic amber stone with fossil inclusion - nice looking spider, probably Synotaxidae Acrometa.
It weighs 0.5 grams. Measurements of stone 15x13x5mm, length of spider body ~ 2mm, max ~ 11.5mm.
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.