Khan Diamonds is a sole proprietor jeweler in the heart of downtown Boston, located in the historical jewelry exchange building at 333 Washington St., Suite #516, across from the elevator. We help you create the custom-designed engagement ring and wedding bands of your dreams. We have a large selection of Lab Grown and Earth Mined diamonds and offer the best prices on loose GIA diamonds, guaranteed to beat online retailers prices. All Conflict-free diamonds. Never any pressure. Please read from our past and present customers on Google and Yelp. Located in Boston, MA, Khan Diamonds is a stellar choice for sparkling wedding jewelry.