About UsJewelry Collection has been in business since 1985. A family owned and run business, located at Downtown Union Square in San Francisco. We are proud to be in business over 30 years and have been created many unique merchandise and distinctive customer service. We work hard to personally ensure customers are happy with their jewelry of exceptional standard quality and value. And our business is well known for our great selection of unique pieces in Diamonds, extremely rare beautiful colored gem stones.