In the same model (there are two objects in the file in different colors):
Polys: 652,544 (without smoothing 40,784)
Verts: 652,814 (without smoothing 41,054)

The OpenSubdiv modifier (2 iterations) is open.

Pendant chandelier Brubeck Delightfull D80cm
Number of lighting sources: 21

Version of CoronaRenderer 10.
In CoronaRenderer versions 6 and below, CoronaLegacyMtl is CoronaMtl.
CoronaLegacyMtl requires a version of Corona Renderer at least 1.5, because PBR is taken into account.