Here's my 1.58ct F Si1 Ex/Ex/Ex from Union Diamond. Tiffany type 6 prong setting. I'm in Australia and after about a month of research on Pricescope - and scouring Bluenile.com, Jamesallen.com - and the internet, I finally ordered, along with the help of Tony Rixom from Union Diamond. I was very skeptical at first as wiring $13,500 USD (including Australian GST/duties) to the USA is always a risk, especially from half-way around the world. I was worried I'd get double charged duty by Australian customs. And what if I didn't like it when it arrived? I even had nightmares I got sold a dud.These are all the risk I had to weigh up. I had looked at jewelry stores in Melbourne, Australia, but a 1.53ct F or G was about $19,000 USD! Note that import taxes for us in Australia is 15% on jewlery (though Union Diamond charge me 19% import tax) - but it still came to less than what I was to have to pay in Australia. A slight hiccup - Fedex's agent in Cairns (where I live - Great Barrier Reef), sent the package to a completely wrong address, so I had to chase it down 6 hours later!