This is a big, beautiful loose ruby gemstone, perfect for creating a unique piece of jewelry. It's a natural ruby sourced from Africa, but it's been cut and polished in India. The color is a deep red, and it's been treated with dye to enhance that color (which is pretty common with some rubies). The cut is an excellent grade oval shape. It's opaque, not transparent. The stone is about 24mm long, 12mm wide, and 10mm deep. It's 'eye clean,' meaning you won't see obvious flaws from a normal viewing distance. The brand is Brooklinegems, and they offer a lifetime money back guarantee – pretty confident! Important note: The seller says items are shipped at random, and the photos are just for reference, so the exact stone you get might vary a bit in appearance from the picture. No certification. If you're a jewelry designer or looking for a statement stone for a custom ring or pendant, this could be it.