John Giannakopoulos founded GIANNA JEWELERS in 2009 with a vision to offer the Cleveland/Akron area high quality, creative jewelry in a warm and inviting atmosphere. John is a graduate of the Gemological Institute of America in California. He is a Graduate Gemologist and Appraiser and is Certified in Diamonds, Diamond Grading, Colored Gemstones, Colored Gemstone Grading and Gem Identification. John has been in the jewelry industry for over 25 years.

The foundation of GIANNA JEWELERS is Service. GIANNA JEWELERS continues to set the standard for quality and service to all our valued customers. Our staff can accommodate every request whether it is a simple jewelry repair or a custom designed piece made especially for you. Our certified Watchmaker can provide our customers with superior service and reliability. Big or small, simple or complex, we provide the same level of care, expertise and courtesy to all. At GIANNA JEWELERS, we put the highest value on developing a long term relationship with our clients, and treating them fairly is always our first priority. We always strive to deliver unparalleled service while offering an exceptional selection of loose diamonds and gemstones as well as fine jewelry and watches. We realize the importance of earning your trust and we are committed to maintaining the highest levels of professionalism and integrity. One of the highest compliments we receive at GIANNA JEWELERS is a referral from a parent to their son or daughter to come to us to custom design or select an engagement ring. This level of trust is an honor and we make every effort to exceed expectations.

Insight into the Gemological Institute of America

Established in 1931, the Gemological Institute of America is the world’s foremost authority on diamonds, colored stones, and pearls. GIA is where students from all over the world learn the intricacies of the gem and jewelry field. The GIA exists to protect all purchasers of gemstones by educating Graduate Gemologists to provide their expertise needed to accurately and objectively determine gemstone quality.

Since the Gemological Institute of America was established 79 years ago, there have been only 200,000 graduates from 13 schools in 10 countries. The Graduate Gemologist (G.G.) diploma, which focuses on gem grading and identification, is the industry’s highest professional credential. Most notably, the GIA is the author of the 4Cs and the International Grading System-the worldwide standard for evaluating diamond quality.







Buyers Guide

About Us



Store Hours:   Tuesday - Friday: 12:00 pm - 7:00 pm  
                                 Saturday: By Appointment Only           

Phone 216-767-5700: Fax 216-767-5703   ----      15201 Detroit Ave. Lakewood Ohio, 44107




Gianna Jewelers is a full service retail jewelry store located in Lakewood, Ohio. Our new Cuyahoga County store location has a full selection of women's and men's jewelry. We offer a wide variety of rings, necklaces, bracelets, pendants for your shopping experience. Our Bridal styles range from modern to traditional. Your retail Cleveland jewelry shopping experience should be the best. Come in today and experience a calm and relaxing atmosphere with top quality creations and staff. We provide watch repair, jewelry repair, diamond and gem appraisals, custom jewelry creation, remounting, and more. Gianna Jewelers is a jewelry store in Cleveland serving the greater Cleveland area.. Our Cleveland Jewelry store specializes in diamonds and watches for the discriminating Greater Cleveland customer .