Rajya Sabha is the upper house of the Indian Parliament, with a maximum strength of 250 members. Its role in India's polity is significant as it plays a crucial role in influencing legislative and executive decisions in the country. Here are some of the unique features of Rajya Sabha:

• Representation: Members of Rajya Sabha are indirectly elected by the members of state legislatures. This provides an opportunity for the states to be represented in the central decision-making process.
• Stable House: As only one-third of its members retire every two years, it provides a level of stability and continuity to the legislative process.
• Special powers: Rajya Sabha has some special powers such as approving bills that deal with states, impeaching the President and removal of judges.
• Expertise: It comprises individuals with expertise in different fields which helps in enriching the legislative debates.
• Checks and balances: Rajya Sabha acts as a check on the powers of the Lok Sabha and ensures that decisions are not taken in haste.

In a nutshell, Rajya Sabha plays a crucial role in India's political system by providing representation to the states, balancing powers and ensuring that the legislative process is informed and deliberative.