Sunburst design originated during 1960s; Show gratitude towards ancient symbol sun and nature; Style symbolic of warmth, energy and brilliance; Metal from under gallery brought upwards to give sunburst effect; Gems are set close together; Creates an illusion of much larger gemstone; Gives a flattering effect, draws attention; Zircon sorted for color, clarity and shape; Selected after strict QC, very time consuming; Tanzanite is one thousand times rarer than diamond; Mining for tanzanite will become extinct in few years; Availability going to be more expensive, difficult; Also pleochroic, color changes with viewing angles; HARDNESS: 6-7; TREATMENT: Heat; COLOR: Blue; SOURCE: Merelani Hills, Tanzania; BIRTHSTONE: Dec; ZODIAC: Sagittarius, Capricorn; ANNIVERSARY: 24th; METAPHYSICAL: Said to sharpen mind;