Uwe Koetter Diamonds and Gemstones. With a De Beers Trained Diamond Grading Expert on site, Uwe Koetter Jewllers guerentees perfection. In-house diamond expert, Eileen Wium says, "Proportion is vital. Without good proportions Colour, Clarity and Caratage the value becomes negligible – which is why we guarantee that every stone bought from Uwe Koetter is perfectly proportioned: to maximise its brilliance and value."
Uwe Koetter Tanzanite. At Uwe Koetter, we have a stunning selection of loose tanzanite gemstones and jewellery, which we craft into our world-renowned unique designs. The deeper the intensity of blue, the more valuable the stone – however, specific skin tones complement lighter or darker Tanzanite colours. http://www.uwekoetter.co.za