Ross-Simons is the authority on fashionable must-haves. True blue style. Our sparkling necklace features a gentle curve of 3.50 ct. t.w. marquise sky, Swiss and London blue topaz in sunny 18kt yellow gold over sterling silver. Suspends from a rope chain with a 2" extender. Springring clasp, tonal blue topaz necklace. Each Ross-Simons item arrives in a fine jewelry presentation box. Shop Ross-Simons jewelry risk-free as all items include a 30-day, 100% money-back guarantee.Stone InformationGem Type 1 - TopazStone Cut 1 - Good-CutStone Color 1 - BlueStone Clarity 1 - BlueStone Shape 1 - Marquise-ShapeStone Creation Method 1 - NaturalStone Treatment Method 1 - Heat-Treated,IrradiatedStone Weight 1 - 1.60 CaratsNumber Of Stones 1 - 2Gem Type 2 - TopazStone Cut 2 - Good-CutStone Color 2 - BlueStone Clarity 2 - BlueStone Shape 2 - Marquise-ShapeStone Creation Method 2 - NaturalStone Treatment Method 2 - Heat-Treated,IrradiatedStone Weight 2 - 1.20 CaratsNumber Of Stones 2 - 1Gem Type 3 - Top