Blumenthal Jewelers has re-opened as BLUMENTHAL & Co. Our new location is 4685 Date Avenue, La Mesa, Ca. 91942. The focus of our new design studio will be custom design,special orders, estate jewelry buying and selling, trunk shows, as well as jewelry repair and watch batteries Hours are Tuesday, Wednesday, and Thursday 11:00-4:00. Monday, Friday and Saturday hours are available for appointments only. Free parking in the rear of the store.