
Gemstone guide · Mars
Red coral (Moonga / Munga) is the gemstone of Mars (Mangal), linked with courage, energy, determination, property and siblings.
It is the traditional Rashi Ratan for Aries (Mesh) and Scorpio (Vrishchik), and is often recommended for Mangal dosha.
What is coral?
Coral is an organic gem formed from the skeletons of tiny marine animals. Precious red coral from the Mediterranean, often called Italian coral, has long been the most prized for astrology. All the coral we currently stock is Italian.
Colour
Astrologers usually prefer an even, deep orange-red to blood-red colour without cracks or holes.
Shop Moonga
View all →Triangle or oval?
Both shapes are traditional. The triangle cut is closely associated with Mangal, while the oval suits everyday wear. Choose the one you like.
How much should it weigh?
Most adults choose 5–9 carats, often guided by about 1 ratti per 10 kg of body weight. See the carat to ratti guide.
How to wear Moonga
- Day: Tuesday morning
- Metal: gold, copper or Panchdhatu
- Finger: ring finger of your working hand
- Mantra: “Om Kraam Kreem Kraum Sah Bhaumaya Namah”, 108 times
Care
Coral is soft (3–4 Mohs) and sensitive to acids and heat. Keep it away from perfume and chemicals; wipe with a soft damp cloth.
Not sure which stone is right for you?
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Keep reading
These are traditional astrological beliefs, not guarantees.




Carat to Ratti Conversion: Complete Guide with ChartRead guide →
Gemstone Care Guide: Cleaning and Storing Every StoneRead guide →
Rashi Ratan: Which Gemstone for Your Zodiac Sign?Read guide →