| In Hindu Astrology, there are 9 planets considered for analysing a horoscope, and therefore, there are nine different gemstones assigned to them. These gem stones are called Nav-ratnas or "Nine Gems. The planets and their stones are: | ||
PLANET | GEMSTONE | SUBSTITUTE |
| Sun (Surya) | Ruby (Manik) | Red Garnet |
| Moon (Chandra) | Pearl (Moti) | Moonstone / Opal |
| Mars (Mangal) | Red Coral (Moonga) | Carnelian |
| Mercury(Budha) | Emerald (Panna) | Peridot |
| Jupiter (Guru) | Yellow Sapphire | Topaz (Golden) |
| Venus (Shukra) | Diamond (Heera) | Crystal |
| Saturn (Shani) | Blue Sapphire (Neelam) | Lapis Lazuli / Turquoise |
| Dragon's Head (Rahu) | Gomedha | Zircon |
| Dragon's Tail (Ketu) | Cat's Eye (Lahsunia) | Alexandrite |