Mariah Gabrielle Collection - JTI Diamond Co




Mariah Gabrielle Andell is a contemporary and distinct jewelry designer based in San Antonio, Texas. She has transformed her passion for design and color into a signature line, the “Mariah Gabrielle Collection.” The collection features an array of handcrafted pieces that reflect elegance and eternal love. Inspired by travel, art, and nature, she creates designs with fascinating shapes and hues. Customized engagement rings and personalized fine jewelry are the signature pieces of the Mariah Gabrielle Collection. The fine jewelry collection will launch in Fall 2019 and will be available exclusively at JTI Diamond Co. Sign up for our newsletter for updates!






Chris & Stacy

Del Frisco’s Steakhouse, Houston, TX

I want to thank Mariah, Jim and everyone involved in helping find the perfect diamond and creating such a special ring to surprise my wife Stacy for our 10th
 wedding anniversary!

From start to finish I was impressed by the excellent service! The entire process was all done through emails, videos and phone calls and every detail was explained and shown with precision and care. Through every conversation, Mariah’s sole focus was on crafting the perfect ring for Stacy and always listened to my vision every step of the design process.  Your efforts to personally travel to deliver the ring in person goes above and beyond after sale service!

My wife Stacy is in love with her ring and can’t stop smiling! Thank you so much again!!

Louis & Royce

800 Congress Venue, Austin, TX

Picking out our rings was such a special experience and knowing they were made JUST for us was important to us. We gave Mariah an idea of what we wanted in each of our rings, and after handpicking my diamond, she truly brought our vision together! The whole process was so enjoyable and very exciting to see your dream ring come to life. Our rings couldn’t have been more perfect! I look at it daily and still am in awe of how gorgeous it is! We are very thankful for everyone involved in making sure our rings came out perfect! “

Josh & Pam

Stinson Municipal Airport, San Antonio, Texas

I always pictured my ring to be something that describes not only who I am as a person, but a true symbol of our love and commitment to each other. Mariah took my fiance’s vision and created something truly magical. It is absolutely beautiful and elegant. Its simplicity describes not only who I am, but who we are as a couple and everything our relationship signifies. “

Justin & Kristin

Kendall Plantation, Boerne, Texas

We want to give a huge thank you for making the diamond selection and design of the engagement ring seamless and enjoyable! It was truly an unforgettable experience to hand pick our diamond from a spectacular selection specifically curated for us!

It was a pleasure working with Mariah on designing my dream ring. She was brilliant at every step of the process from start to finish. The service was flawless! The final product was beyond my greatest expectations and I’m so thankful I was able to work with Mariah on designing my ring! I absolutely LOVE my ring!!!

Thank you for turning our inspiration into a reality! We look forward to working with you again in the future! “


All Mariah Gabrielle designs are traditionally handcrafted to be one of a kind, every time. Engagement rings are custom-made to order and based on the precise measurements of the stone you choose while working with us. We work closely with our workshop in Los Angeles, CA to craft your design. Rings take 2-3 weeks; special request and accommodations may be accommodated. Submit a design request form to start your success story!