Pearl is the primary gemstone recommended for Cancers. This is because it’s the main gemstone for the Moon.
A Cancer in Vedic Astrology is commonly prescribed the following Jyotish gemstones: Pearl (or Moonstone), Red Coral, or Yellow Sapphire. These are the gemstones for Moon, Mars, and Jupiter respectively. Why are these considered the best gemstones for this sign? Let’s review the astrological nature of a Cancer to better understand why these are best, which are neutral, and which should be avoided.