Visit Best Collateral Mission District between September 17 – 23, 2017 for a great BOGO deal. Buy 1 piece of jewelry and get a 50% DISCOUNT on a second piece! 50% off is on an equal or lesser valued item. 1st item must be purchased at full price and cannot be combined with any other promotions or offers. 2nd item must be of equal or lesser value. Offer cannot be combined with any other offer. Discount not available on previously sold merchandise. Excludes all 3rd party appraised/certified jewelry. Rolex, gold and other high end watches excluded.