“6 x 5 x 4.5 cm. This is a stunning crystal with a color, lustre, and gemminess that is beyond anything you normally see for this species. It is robust and, I believe, twinned. It has an intense yellow-citrine color to it. Steve Smale had owned this for some time, and got it directly from the eminent dealer Carlos Barbosa (now deceased). Note that this piece was analyzed to be sure it is in fact Montebrasite, and not Amblygonite. This specimen was featured in the exhibition "MINERAL DREAMS: Brazilian Gem Treasures" at the Munich show of 2010. Joe Budd photo. ”