http://i1301.photobucket.com/albums/ag111/BaileySantwire/20130831_171851_zps77665d87.jpg http://i1301.photobucket.com/albums/ag111/BaileySantwire/20130920_164721_zps32fd01c1.jpg

There are quite a lot of Quartz patterns that look similar to that. It is not an uncommon pattern. My advice would be to go to a Cambria showroom, show them that photo, and ask to see a similar one. I say Cambria because I think that brand has a lot of nice patterns. You could also try Silestone or Caesarstone. Really, that sort of pattern and coloration is common in Quartz. If you like that slab pictured, just get it. Also, the back or edge of that slab should say the brand name.

looks like a particularly aggressive Eriosyce? I only have one, an occulta. It is largely bald.

Names for Aglaonema cultivars are inconsistent, to say the least; one often sees the same plant with different names from wholesale growers in the same area of Florida. That said I’ve seen this called ‘Brilliant‘ and ‘Silver Stone’. ’Golden Madonna’ is similar.