An East African 9.38-carat spinel is at the centre of the Piaget Sunlight Blazing Sky necklace from which radiate yet more red spinels, spessartite garnets and pink sapphires giving way to cool blue pear-shaped Paraiba tourmalines and diamonds with a detachable pear-shape Mozambique Paraiba tourmaline strung on 175 carats of white opal beads.
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