An egg-sized diamond fetches over $21 million at the Geneva sale
The Rock, an egg-sized white diamond billed as the largest of its kind to be auctioned, sold for more than CHF21.6 million ($21.75 million), including fees – at the low end of what Christie’s expected. As reported by AP, the 228-carat pear-shaped G-Color stone has a gross weight of 61.3......