Judging by the specific items in the render, I'd guess it may be an older generation genesis, or a Victoria 4 with heavy on the corrective morphing packs that were made for her, and, I'd make another educated guess that it's not an Iray render, but rather a Firefly (Poser older native render engine) one, or a well worked 3Delight render, from the older versions of DAZ Studio.
The hints giving me this, are, in no particular order...
1) the hair, that looks suspiciously like one of the older Neftis hair pieces. The alpha mapping is just blurry, compared to how more recent hair utilize alpha maps on hair, and on how Iray reacts to alphas compared to Poser's Firefly, that was the most used engine at its time.
2) the anklet comes from an older Aeon Soul (at the time they were still calling themselves Aery Soul) outfit. It was mainly for Victoria 4, but you could make it work on Genesis.
3) And, the final thing that gives it away, is the pearls reflection. It's not real raytraced reflections, it's reflection maps. Each individual pearl gives the exact little bright circle, at the exact portion of surface, as if each individual pearl was facing directly against a singular light source. That was the preffered "fake reflections" method at the time, considering we're talking pre Corei7 tech, and with RAM barely ever going past 8 GB, on even some heavy duty workstations. And, you can see it on the eye surface as well.
To conclude, it is technically a DAZ 3D base model (V4 or Genesis), with either a character morph preset, or manually worked morphs, and, probably, additional extra corrective or shaping morphs, or a combination of the above, and, judging by how the skin looks, a Maddelirium, or P3D skin pack for that generation of base models.