The Givenchy necklace features a black-tone, hybrid spiga/rolo chain, approximately 18 inches in length, embellished with blue rhinestones. It showcases a Y-drop or lariat style with round, oval, and pear-shaped blue crystals. The necklace is signed by Givenchy and has a lobster claw clasp with a 1.5-inch extender, allowing the total length to reach 18 inches. The design incorporates light sapphire rhinestones and a teardrop-shaped jewel at the end of the drop. It is considered vintage, possibly from the 1990s, and combines darkened metal with light and medium blue stones, offering an elegant and luxurious touch.