• Center Sapphire is 1.33 carats, 6mm from flat to flat, 6.8mm from corner to corner and 4.3mm in depth. • I personally faceted this gem in my own fantasy square cushion design • Untreated naturally occurring sapphire. Gem rough sourced from the Umba Valley in Tanzania • Gem Notes: This gem is greenish blue with a medium tone and strong saturation. Slight imperfections typical of sapphire from this locality are visible under magnification.