Red Coral Moonga

Natural Red Coral (Moonga) — the Navratna traditionally associated with Mangal (Mars).
AllRuby Emerald Blue Sapphire Yellow Sapphire White Sapphire Pitambari Sapphire Pearl Red Coral White Coral Hessonite Cat's Eye Amethyst Citrine Peridot Moonstone Opal Fire Opal Aquamarine Iolite Lapis Lazuli Turquoise Zircon Morganite Blue Topaz