The Los Angeles Jewelry Mart is about a block long cluster of vendors, almost like stalls (or an indoor swap meet).  If you haven’t been - it is wild to see so much expensive jewelry in one place.  And there are discounts on everything!  Even, Cartier, etc.

Parking is expensive (probably $20+), which is the only drawback.  Over the years, I have purchased many different pieces here, and have never had a problem with authenticity.  If you have time, stop at Clifton’s Cafeteria for lunch, their food is fairly priced, fresh and prepared “from scratch”; another Los Angeles Landmark!