Louis Vuitton 18K White Gold Berg Lockit Diamond Ring Louis Vuitton Unisex Rings. SKU: 66376. Color: White. Metal Type: Gold. Metal Stamp: 18k. Metal Weight: 7.6g. Gem stone type: Diamond. Stone weight: 0.4ct. Stone clarity: VS1. Stone color: F. Ring style: Fashion. Pre-Owned Louis Vuitton 18K White Gold Berg Lockit Diamond Ring.