Big Bang Stacking Rings in 18ct gold.  There are three rings which stack inside each other, and can be worn separately or together:
Ring 1 - 18ct yellow gold set with Amethyst and Diamonds - £1,195
Ring 2 - 18ct white gold set with Blue Sapphires and Emeralds - £1,195
Ring 3 - 18ct white gold set with Blue Sapphires and Emeralds - £1,195

Combined price for all 3 Stacking Rings - £3,395