Reliance Industries on Tuesday announced its first oil discovery in its exploration block in the Cambay Basin off Gujarat. It holds 100% participating interest in the block which covers an area of 635 sq km, it said in a statement. This block was awarded to Reliance under the fifth round of the New Exploration Licensing Policy. At 11:50 am, the share was quoting at Rs 2,067.85, up Rs 43.30, or 2.14%