Baltic amber stone with perfect preserved great spider probably Synotaxidae, Acrometa.
It weighs 2 grams. Measurements of stone 34x19x6mm, length of spider body and head ~ 3mm spread legs ~ 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.