Cut quality! If I had of realised the importance of this factor when purchasing a diamond I would have saved myself a lot of time. Brian Gavin sells nothing but the best cut quality, so they've got that part covered. I looked locally (here in Australia) and online at the usual diamond sellers (BN, JA, WF) searching for a personalised engagement ring for the right price. I found myself looking at forums such as Pricescope as well as other independent diamond review websites, I kept ending up on the same website, Brian Gavin Diamonds. After being impressed with their customer service both through email and by phone I decided to give them the job to create the ring. I decided to get a 0.611ct F diamond set in a Classic Tiffany Knife Edge yellow gold setting! the final product - nothing short of amazing. It has been a few weeks since I proposed and I still catch my fiancé just staring at the diamond with a huge smile! She has had nothing but compliments on how gorgeous the ring is. I have bought her some nice jewellery in the past, but this just outshines it all. In Australia, any purchase over $1000 incurs a 10% import tax. BUT even adding on this tax, postage and the total cost of the ring, it was still much cheaper than any local manufacturing jeweller could offer. We will definitely be back for our wedding bands and any other diamond jewellery in the future.