The document discusses the different colors that diamonds can appear, from clear white to shades of yellow, brown, blue, pink and more. The color is caused by small amounts of impurities like boron or nitrogen trapped in the diamond's crystal structure during formation. More boron causes a blue diamond, while more nitrogen makes a yellow diamond. Synthetic diamonds can also be colored through high pressure and temperature processes. Brown and pink diamonds were once less valuable but are becoming more popular gemstones. The trends in 2011 included chocolate diamonds, snake and flower-inspired jewelry using diamonds in vibrant colors.