The reason for this is that most jewelry is worn in a way that it rests directly on the skin. If you are relatively ignorant as to whether a 1-carat circle diamond ring will suit you, we are here to help. Determining your Skin Tone To find out your skin tone and figure out what kind of diamond jewelry suits it, all you need to do is look at the veins in your wrist. It goes without saying that this has to be done under natural light. If the veins are purple or blue in color, then your skin tone is a cool one. If the veins are greenish, the skin tone is warm. Under the sun, people with a warm skin tone will see their skin color deepen without burning. For people with cool skin tones, the skin burns in the sun, without tanning much. There is another skin tone besides that, called the neutral tone. People with this cannot see the color of their veins from outside the skin, which burns in the sun and tans afterwards. Almost everything looks good on people with neutral skin tones, such as silver and gold.