These are some of the most classic Apatites out there. This material is well known for it's unique greenish-yellow color. This particular stone is a surprisingly clean gem for the size. This stone has a Cushion cut and eye clean clarity. These stones are a lot less common to find on the market today than they were 10-15 years ago and it seems that the material has "dried up." A great collectors stone with excellent size, cutting, clarity and color.