The ring that Kevin Jonas gave to his girlfriend Danielle Deleasa, when he asked for her hand in marriage, has 210 diamonds in it.

It is ornamented with a three-carat, cushion-cut diamond set in double shake platinum band with round pave diamonds.

The pop star gave special instructions to Jacob and Co to get it done.

"He had done his homework, He knew exactly what he wanted," the New York Daily News quoted the company's president, Angela Arabo, as having told People magazine.

The Jonas Brothers member was very satisfied with the jeweler's work.

Arabo added: "When he got the ring, he called me and said it was the most beautiful ring and it was exactly how he imagined. He was really excited. He couldn''t wait to propose to her."

The 21-year-old proposed Deleasa when he made a surprise visit to her New Jersey home the day after his concert at Vancouver.

She said: "I didn''t see the ring for a while because I couldn''t believe what he just asked me, I was looking at him, like, `Are you serious?'' When he pulled out that ring, I was like `Oh gosh.'' I said something like `Oh my god,'' and then I started crying."

However, the wedding date is still not fixed.