The History of JTI Diamond Co.
The History of JTI Diamond Co.
A Legacy of Craftsmanship, Integrity, and Timeless Design
Our Journey Through the Years
From humble beginnings to becoming a trusted name in fine jewelry, JTI Diamond Co. has evolved through decades of craftsmanship, expertise, and lasting relationships. Built on the values of trust, quality, and personalized service, our journey reflects a deep commitment to helping clients celebrate life’s most meaningful moments. Explore the milestones that have shaped our legacy.
JTI Diamond Co. Timeline
1978
Turner’s Fine Jewelers
Jim Turner opens his first jewelry store in San Antonio, Texas, in partnership with NBA legend George Gervin.
The store earns the nickname "Diamonds and Ice."
1980
Riverside Fine Jewels
Jim expands his business, opening a second location in downtown San Antonio.
1982
Graduate Gemologist Certification
Jim earns his Graduate Diamonds and Diamond Grading certification, a milestone that solidifies his expertise in diamonds and gemstones.
1991
JTI Diamond Co. is Founded
Jim and Yolanda Turner open JT International Diamond Company in San Antonio’s Koger Shopping Center, offering fine diamonds, engagement rings, and custom jewelry.
JTI quickly becomes known as the “best-kept secret in diamonds.”
1993
Sourcing Diamonds Worldwide
Jim begins traveling internationally to source diamonds directly from the world's most renowned markets.
Establishes global connections in:
- Guinea – Purchases his first rough diamond.
- South Africa – Sorting through rough diamonds.
- Australia – Expands sourcing efforts to include rare gemstones.
1999
H-E-B Fine Jewelry
JTI Diamond Co. partners with H-E-B Market Place to launch a jewelry department concept in San Antonio.
2004
The Next Generation Joins
Jonathan Turner attends the Gemological Institute of America (GIA) and earns his Diamond Graduate certification.
Specializes in diamond sourcing, fine watches, and investment-grade timepieces.
2009
A New Chapter: Park North Shopping Center
JTI relocates to its current location at 726 N.W. Loop 410, Suite #105, in Park North Shopping Center, offering a more central and convenient location for clients.
The company officially rebrands as JTI Diamond Co.
2014
Mariah Joins the Business
Mariah Turner begins her GIA education in Diamonds, Diamond Grading, and Colored Stones.
Brings fresh creativity, a passion for design, and an expertise in rare gemstone sourcing to the company.
2025
Celebrating 34 Years in Business
The Turner family continues to grow their legacy, celebrating over three decades of excellence in fine jewelry.
Plans for future store renovations and brand evolution are on the horizon to enhance the client experience while staying true to the family’s traditions and values.
A new family portrait will be included to commemorate this milestone.
The Future of JTI Diamond Co.
Looking Ahead
As JTI Diamond Co. celebrates over 35 years in business, we remain dedicated to innovation, craftsmanship, and creating meaningful jewelry. Our future includes exciting developments, including an enhanced store experience and an expansion of our bespoke jewelry collection.
With Mariah stepping into a leadership role, she envisions a future that honors JTI’s foundation while introducing a modern, elevated aesthetic. The Turner family looks forward to continuing their **commitment to quality, trust, and personalized service, ensuring that JTI Diamond Co. remains a cornerstone in the fine jewelry industry for generations to come.
A Legacy of Trust & Excellence
"Jewelry is more than just beautiful—it’s a reflection of history, love, and legacy. We’re honored to be part of our clients’ most meaningful moments."–Jim Turner
For over 50 years, JTI Diamond Co. has been built on relationships, integrity, and artistry. As we move forward, we remain committed to crafting exceptional jewelry that tells a story, celebrating the past, present, and future with every piece we create.