Ian Rosenberg Jewellery NecklacesThis regal sapphire and diamond necklace is truly a work of art. With no less than 22 round cut sapphires all encased in a frame of diamond clusters, this Rosenberg necklace is one of the most luxurious pieces available in store. With each sapphire and diamond cluster linked by a gold chain and another smaller diamond, this staggeringly beautiful design will never fail to impress.