Fancies? Yes. Diamonds come in colors.

Think of diamonds and you think of breathtakingly clear stones, clear as water, pure as ice. But diamonds do come in colors. Diamonds are normally graded from colorless or rare white, to brown. Colors deeper than light yellow are not usually used in jewelry making, although on occasion, champagne diamonds or cognac diamonds appear. These are really, in most cases, white diamonds of an inferior color grade, rather than fancy diamonds.

The colorless is the most expensive of the white diamonds. Diamonds with a faint tint of yellow are less valuable and a yellow color visible to the naked eye are the least valuable.

Fancies are the term used for colored diamonds. Diamonds can be found in every color and intensity: red, blue, yellow, green, and lavender. The intensity of the colors can range from palest pink to red, lightest blue to sky blue and so forth. Fancy diamonds are rarer than white diamonds. The most common fancy colors are yellow ranging from canary yellow, orange, and brown. Colors such as pink, lavender and light green occur much more rarely than the yellow colors. Most valuable of all are the deep reds, greens and blues.

One word of caution: colored diamonds can be created artificially by subjecting inexpensive yellowish and brown stones to radiation or heating. Fancy diamonds, other than green, can be tested to see if the color is natural or the color has been induced.

The Hope diamond is an example of a fancy blue diamond. The Argyle Mine in Australia produces a small number of red diamonds and is the world's largest producer of pink diamonds. Several of their pink diamonds have sold for over $1,000,000 per carat.
The Dresden diamond is an apple green diamond weighing 40.70 carats. The Tiffany diamond is orange.

At certain times of the day the sky is colored. At sunrise you have what colors? Yellow, orange, and red. Suppose your diamonds take shape at these moments. They are reflecting the yellow or the red, and it becomes a part of them. Or if it is not sunrise or sunset, but the middle part of the day when the sky is blue, they reflect the blue. Just at the moment they turn hard they take on the color of the sky. If they are formed at night when there is no color for them they become pure and colorless, what we call white.