Swarovski 2739 Triangle Beta Flat Back Crystal 5.8×5.3mm 7×6.5mm por | ago 8, 2026💎 Swarovski 2739 Triangle Beta Flat Back Crystal. ✔ Model: 2739. • 7×6.5mm – 5 pieces. ✔ Shape: Triangle Beta. Genuine Swarovski crystal made in Austria. Adhesive is required (nail glue, gem gel, epoxy, or jewelry adhesive).