Since every dial is a sliver of a piece of stone that is polished down to a thin, flat layer, every dial will look slightly different, and there is no better example in the group than the Pietersite dial, which Baltic has illustrated with the above image featuring a variety of different dial examples.
They have the swirling galaxy-like effect of a marble, with colors ranging from mostly blue to browns, oranges, reds, and yellows. The bloodstone dials look mostly red and green, the dumortierite are mostly blue and white, and the pink albite have an intense bubblegum hue. All of these are delivered in a 36mm by 9.2mm case in a mix of stainless steel (for bezel, lugs, and caseback) and grade 5 titanium. The lug width is 20mm, and the lug-to-lug is 44mm.