Spectrum Gems Inc. was established in 2002 at New York city by entrepreneur Dhananjay Sett, popularly called DJ. 

The company was founded with the philosophy of offering people the best gemstones in the world at an affordable price. DJ’s idea was to work hard and grow with the customers - and in just over a year this philosophy put Spectrum Gem in orbit, with an integrated network of major cutters and key industry players worldwide 

After dominating trade in loose gemstones, DJ's zeal to design and his passion to create exclusive and unique pieces inspired him to make elegant and sophisticated ready-to-wear jewelry - exclusively for those who wish to tastefully indulge in the finest jewels and most beautiful design that money can buy. His muse with jewelry deṣign was complimented by rare and exquisite gemstones he had accumulated over the years from various parts of the globe: from the treasures of India to the assets of Thailand and Africa. The debut of DJ's jewelry design was heralded by one of his signature pieces appearing on the cover of Vogue magazine (August 2003) and winning first place in the evening wear category of A.G.T.A.'s coveted SPECTRUM AWARDS 2004.

From 2004 onward, DJ brands his designs under the name of Esha. “It’s just our first step in the journey we have undertaken”, says DJ.

The latest expansion that DJ has implemented, which culminated with membership of the National Pawnbrokers Association, puts him in a position to offer the best rates to people who wish to pawn or sell their diamonds and jewelry. Esha Diamonds & Jewelry L.L.C. is today the best destination in NYC for buying, selling and trading in diamonds.