Lady's Platinum Emerald and Diamond Ring. Ring Size: 6.75 Contains 2 Pear-Shaped Diamonds and 4 Marquise-cut Diamonds weighing 0.79cttw Color: F-H, Clarity: VS(1) - SI(2) Contains 1 Oval-Cut Natural Colombian Emerald weighing 4.61ct. Most of you that are regular clients must know of my pension for colored stones and I must say that this emerald is the benchmark for Colombian green emeralds. Trust me on this, green just doesn't get any better. Not to mention that it's in an elegantly handmade platinum and diamond mounting. "A thing of beauty is a joy forever." Whoever said that must have been looking at this ring Chairman's Comment: Only a laboratory can certify that an emerald is Colombian. It is a term analogous to a blue-white diamond. Unless a gemologist has certified it, it is nothing. Unfortunately in recent years, Colombian emeralds have been few and far between. In better years, I would have given this to my wife to save for her old age. This year, instead, I gave her a building. You win some, you lose some.