Rectangular Cufflinks With Tanzanite Stones 2 Year Product Guarantee An ideal gift for birthdays, anniversaries & other special occasions Our dolphin swivel cufflink fittings provide ease of wearing as they slip neatly through the cuff. Made with strong, nickel free, non-tarnish materials Dispatched from UK within 24 hours. Estimated delivery 6-10 working days (USA & Canada).