Step 1: Understanding Samudra Manthana.
Samudra Manthana, or the churning of the ocean, is a famous episode in Hindu mythology described in the Vishnu Purana and Bhagavata Purana.
It involved Devas (gods) and Asuras (demons) churning the ocean of milk using Mount Mandara as the churning rod and Vasuki (the serpent) as the rope.
Step 2: Treasures obtained.
During this process, many divine objects and beings emerged, such as Lakshmi (goddess of wealth), Halahala (poison), Amrita (nectar of immortality), Airavata (elephant), and the Kaustubha gem.
Step 3: About Kaustubhamani.
The Kaustubha gem is regarded as the most precious of all jewels. It was worn by Lord Vishnu on his chest, symbolizing supreme wealth and divine energy.
Step 4: Analysis of options.
- Chandrakantamani: Associated with moonstone, but not from Samudra Manthana.
- Kaustubhamani: Correct, obtained during Samudra Manthana and worn by Vishnu.
- Suryakantamani: Linked with the sun, but not part of Samudra Manthana.
- Naagmani: Mythical serpent gem, but not from Samudra Manthana.
Step 5: Conclusion.
Thus, the stone obtained during Samudra Manthana is Kaustubhamani.