The Medusa pendant S size model for 5-Axis CNC and SLA, Micro-SLA, DLP, SCP, MJM 3D printing.

Diameter - 35 mm / 1.377 inches
Loop hole - 4.5 x 3.5 mm / 0.177 x 0.137 inches
Z axis height ~10 mm / ~0.393 inches
Аverage thickness ~0.8 mm / ~0.031 inches

Please, pay attention. The 3DM file contains the Medusa's head as a mesh,
but there is an additional file in which there is only the Medusa's head as solid NURBS

Also in the 3DM file there is an additional round base with a pattern without two mounting holes.

Besides STP (solid), OBJ and ZTL files, I attached the TSM file of solid Medusa to adjust with T-Splines.

The Pendant will well look in Rose Gold, White Gold, Silver or Platinum, and Yellow 18K Gold.
STL files are healed and ready to prototype.

I will be glad for your feedback. Thank you! )

Best wishes, JWORX.