India, Oct. 20 -- Nita Ambani's personal jewellery collection deserves its own exhibition! The philanthropist is often seen wearing exquisite diamond, emerald and gold pieces, which she also lends to her daughter, Isha Ambani, and daughter-in-laws Radhika Merchant and Shloka Mehta.

For the recent Pink Ball in London, co-chaired by her daughter Isha Ambani, Nita Ambani wore an emerald and diamond sautoir, which is a very long necklace that typically has a pendant or tassel on the end. The sautoir is a homage to one of India's most storied jewels: the legendary necklace of the Maharani of Indore.

Designed by Kantilal Chhotalal, the necklace features a 70-carat Colombian emerald, two 40-carat pear-shaped solitaire drops, and another 40-car...