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Pair your little black dress with a lot of sparkle and shine. This square-cut onyx (5-1/5 ct. t.w.) and diamond accent pendant by Effy Collection adds extra drama to your look. Set in sterling silver. Approximate length: 18 inches. Approximate drop: 1 inch.

Pull your look together with vintage-inspired design. This ornate pendant from Balissima by Effy Collection features sparkling round-cut diamonds (1/4 ct. t.w.) set in a filigree-pattern sterling silver setting with 18k gold accents. Approximate length: 16 inches. Approximate drop length: 11/16 inch. Approximate drop width: 1/4 inch.

An alluring shape and three brilliant round-cut diamonds (1/2 ct. t.w.) makes Sirena's 14k gold pendant necklace absolutely stunning. Approximate length: 18 inches. Approximate drop: 1 inch.