Designer Sevan does intriguing carvings with large semi-precious stones mounted in elaborate settings. This is one of those purchases for the person with fearless style and a well-cushioned bank account.
Crafted in 24k yellow gold and sterling silver, set with a hand-carved smoky quartz and white, black and yellow diamonds, it has a face width of 25mm. Available at Barneys for USD $31,585.
IntoTemptation.....jewellery musings 
I’ve followed Sevan’s work for years, and I know members of his family. The work is indeed amazing. Unfortunately, peers of his in Istanbul are accurately, and more economically, recreating the look. His Theodora Collection is more affordable, more wearable, and still quite lovely. Look for it at http://www.shopatchurchill.com. They have a nice selection.