The magnesite that's dyed such a pleasing color, with the interesting crazing, fools people all the time - even stores and dealers. A customer in my workplace was wearing some such beads. A co-worker brought me over to show me "the beautiful turquoise necklace this lady bought on eBay (from a dealer in Thailand) for only 18.00!" I politely informed her that it was dyed magnesite and that this material is also available in hot pink and purple, but she obviously stopped listening with the word "magnesite".