Hydroboracite

Unknown Owner

Help improve this recordNo owner is registered for this specimen yet. If it's yours or you know more about it, you can add the owner, provenance, publications and other details.

Many collectors told Alex this was the best thumbnail example of the species, particularly for its superb development, bevelled edges, and gemminess. An exceptional 1.7 x 2.8 x 0.7 cm transparent colorless single crystal. This magnesium calcium hydrate of boron is awesomely rare in fine crystals and came from just a few discoveries, with this 2012 find being the most noted. It is from Cal Graeber (Graeber & Himes, Fallbrook, California) on February 8, 2013. Specimen was collected in 2012 and the collector wrote “weltbeste Kristalle!” [World’s best crystal!] on a label given to Cal at the time. Photo by Jeff Scovil. Photos of this specimen can be found in The Mineralogical Record, Arizona Mineral Collections, 2013; 44(3) (Suppl): 201; and featured in the book, Refined Elegance (Mineralogical Record, Nov. 2022) on page 115.