Shop › Otto Necklace Image 1 of 1 Otto Necklace €2,375.00 Otto necklace in 18-karat yellow gold set with London blue topaz princess cut on diamond cut chain Purchase Added! Otto necklace in 18-karat yellow gold set with London blue topaz princess cut on diamond cut chain You Might Also Like Open Square Necklace €3,475.00 Open square necklace €3,420.00 Pod Pendant €2,425.00 Moon Necklace €3,140.00 Chevron necklace €1,245.00