Loose Blue Diamonds
What are blue diamonds, and why are they special? Natural blue diamonds are rare and valuable, the most conspicuous of which is the Hope Diamond. They come in several intensities, in ascending order: Light Blue, Fancy Light Blue, Fancy Blue, Fancy Dark Blue, Fancy Deep Blue and Fancy Vivid Blue. This color is the result of minor amounts of boron. If a blue diamond is greenish or teal, this additional natural coloring is due to small amounts of nitrogen.