This mineral's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of fool's gold. This material is considered to be medium to fine, ranging between 2 millimeters to 0.25 millimeters (between sieves #10 - #60). This product is NOT man-made, mixed with resin, or stabilized. Stone authenticity is extremely important to all artisans; therefore, we strive to validate the source of all our minerals before they are processed. As with any naturally occurring minerals, there can be some matrix or host rock mixed in with the product. Please see product images for color, size, and quality. Picture taken in full sun - material is dry.