Martin Katz has gathered a collection of rare Black Australian Opals, each one with its own kaleidoscope of colors that surprise and delight. Here is the rarest of all, an oval-shaped Red Opal of 6.48 carats. Surrounded by 234 white diamonds and held by a swirl of red and orange sapphires, tsavorite garnets and green tourmalines. Call (310) 276-7200 for details, or email firstname.lastname@example.org.
By Robb Report Staff on October 18, 2013