I have provided an opal and diamond engagement ring; set on top of 14k white gold. It is a size 9 and comes with a life time guarantee (documentation still included in the box). The cost has actually been reduced from its initial sales cost of $749 to just $300 dollars. This ring would make the perfect engagement ring or an amazing present. You can also take a look at the ring at this link: /jewelry/opal/rings/24321.aspx