Cushion citrine, cushion amethyst, cushion prasiollite, cushion blue topaz and round diamond necklace set in 18k yellow gold.  Total weight of the prasiollites is 58.79 carats.  Total weight of the citrines is 45.13 carats.  Total weight of the amethysts is 45.96 carats.  Total weight of the blue topaz is 45.13 carats.