A Superb gem quality and SHARP diamond crystal in matrix from Russia. The crystal is a single octohedron with intricately stepped faces. The diamond has been estimated to be nearly 1.5 carats. The diamond is gemmy and read-through, absolutely facetable. It measures 5 mm across. Although it might seem small, it has wonderful visual impact because of the clarity and perch on contrasting matrix. Embedded nearly 50% in the matrix, so you know it is real. Additionally, around the diamond is a thin white layer you sometimes see in these pieces. This indicates not glue but rather an alteration in the surrounding rock due to the chemical heat of formation of the crystal; and is a good indication of its origins as natural. Andreas Graw collection.Joe Budd Photos