Sometimes the camera can cause distortion at the extremes of an image, and maybe that is happening here, but the 3 pearls closest to the clasp appear somewhat egg shaped. Are they, or is that distortion? If they are oval that is a sign of freshwaters. If round, they could be Tahitians.
The other 3 pearls I circled seem a bit potato shaped/oblong. We see that with freshwaters more than with Tahitians.
Also, I think the seller used a light box to bring out overtone colors. The necklace is not that colorful in normal light.
If you still like it I'd want to see more photos, including closeups, in normal light.
What is the metal of the clasp? I'd definitely want to see a metal mark indicating it's gold.
Are they returnable?
What is the size range?
Is the price in the range for Tahitians or freshwaters?
Buyer beware on this one.