I hand cut this freeform shaped focal bead out of genuine jet from Russia and inlaid it with a sunstone from India. The deep black jet makes the flashy orange aventurescence in the sunstone pop! The measurements are shown in the listing title and the bead has a 2.5mm drill hole. It has a high polished finish all the way around. Jet is a kind of gem grade lignite coal that has been used in carvings, beads, and jewelry for over 15,000 years. It reached its greatest popularity during the Victorian era as traditional mourning jewelry. For this reason it is still associated metaphysically with alleviating grief and depression. It is also thought by some to help with financial stability. Genuine jet is hard to come by these days as by the late 1800's and early 1900's it had come to be replaced by cheaper, mass produced, black glass (aka "French Jet"), ebonite, celluloid, bakelite, black onyx, etc. This is natural, genuine jet, a mineraloid made up of fossil organic material that is around 50 million years old.
Here is what June Culp Zeitner of Lapidary Journal fame says about sunstone in her book, "Gem and Lapidary Materials"... "Sunstone is an aventurescent labradorite, microcline, or oligoclase feldspar, distinguished by minute hematite or goethite inclusions which reflect the light." She goes on to say that some microcline sunstones show both aventurescence and adularescence.
Some of the mystic lore that has been said about sunstone is that it is a stone of leadership, dispels fear and stress, increases vitality, encourages independence and originality, warms the spirit and brings good fortune!