blackdiamondsnewyork.com

Average
out of 100
Black Diamonds New York has a content-rich page with genuine social proof assets — 19K+ reviews, a UGC story row, and video — but the page is let down by a catastrophic mobile load time (LCP 8.0s, PSI 32) and a variant selector that offers 19 combinations with zero sizing guidance for a $660 item. Social proof is the brand's strongest dimension, but the combination of slow performance and high-friction variant selection will suppress conversion well below what the review volume and UGC should support.
Variant selection is extremely complex: 8 stone-size/color options plus 11 length/item-type options (including a struck-through out-of-stock '45CM | NECKLACE') with no size guide or measurement reference linked. A $660 purchase with this many variants and no guidance creates significant decision paralysis.
purchase friction · critical
+10 more findings in the full teardown
Score breakdown across all 5 dimensions, every finding, prioritized fix list, and category benchmark position.