Crystal sunflash opal, brightness of less than 1 to 1. Flash is not strong, but still beautiful! This stone is 2.04 carats, resembling a couple of blue tones, and some red in the right light. You really have to play with lighting to "unghost" the color. Still a very clean cut, originally double sided. This stone was cut from a very rough sandy black piece of potch that I had no idea there was any color inside at all. Stone is 8X10 mm. Chain is an 18 inch stainless steel snake chain. Bezel is 925 sterling silver. Comes in a little gift box!