New York's City's diamond district produces the finest quality jewelry in the world! Generations of skilled jewelers have come to NYC's jewelry district to earn a living and proudly craft beautiful fine jewelry. Shop Made in America
Purchasing American-made fine jewelry should not cost you a fortune!
Thomas Cooper Jewelry bypasses wholesalers and retail stores, saving you money, and delivering high quality fine jewelry straight from our workshop to your front door. Shop Online
About Thomas Cooper
Thomas Cooper's jewelry career started in high school as a part-time retail jewelry salesperson in his hometown of Cherry Hill, NJ. Inspired by the experience, Thomas moved to New York City to study jewelry design at the world-renowned Fashion Institute of Technology. Read More...
Aquamarine & Diamond Ring
Aquamarine and diamond ring handcrafted in white gold
Sapphire & Diamonds
Ceylon Sapphire and Diamond ring handcrafted in 18k white gold
Spinel & Diamond Rings
Spinel and diamond rings handcrafted in 18k white gold
Ruby & Diamonds
Burma ruby and diamond halo ring handcrafted in 18K white gold
Sapphire & Diamonds
Ceylon Sapphire and Diamond ring handcrafted in 18K white gold
Diamonds
Classic diamond ring handcrafted in platinum
Aquamarine & Diamond Ring
Aquamarine and diamond ring handcrafted in white gold
Sapphire & Diamonds
Ceylon Sapphire and Diamond ring handcrafted in 18k white gold
Spinel & Diamond Rings
Spinel and diamond rings handcrafted in 18k white gold
Ruby & Diamonds
Burma ruby and diamond halo ring handcrafted in 18K white gold
Sapphire & Diamonds
Ceylon Sapphire and Diamond ring handcrafted in 18K white gold
Diamonds
Classic diamond ring handcrafted in platinum
Learn the Diamond 4Cs
1. Color:The amount of a diamond's color, on a scale of D-to-Z
2. Clarity:The relative absence of inclusions and blemishes
Responsive seller, easy to work with. Ruby is as listed and looks even better than a photo can show. Delivery was swift and received before Christmas. Highly recommended shop. Thank you. 5 out of 5 stars
Richard
My wife LOVED these earrings and hasn’t taken them out since she received them weeks ago. I was also very impressed with the way they were shipped and the great care that went into it. It felt like I was receiving a package from a friend; not a stranger I bought something from on the internet. Thanks so much. These earrings are cherished and they really are well made.
5 out of 5 stars
elliscollado
Great, great, great! Extremely responsive seller sent exactly what I hoped for very quickly. Is there a 6 star review? 5 out of 5 stars
Quality craftsmanship, exact description, fast ship, AAA+professionalism/rapport
lokoher
Emerald stud earrings are beautiful! Awesome seller, A+++++. My 3rd purchase!
304strawberryman
Beautiful stones and as described! Thanks! :)
kentandjosh
Love this Red Spinel stud! More beautiful in person. Thank you Thomas! 5 out of 5 stars
Steve
Beautiful earrings! Very happy with this purchase. Awesome seller, A+++++
304strawberryman
What's Your Birthstone?
Your Birthstone is personal and affordable to collect! Birthstones offer a cherished gifting experience and the perfect opportunity to introduce someone to the world of gemstone collecting!
Click to find your birthstone and learn why it's so precious!
Ethically Sourced Diamond & Gemstone Fine Jewelry
Handcrafted in New York City
Our diamonds, gemstones, and precious metals are sourced in a responsible and sustainable manner. Gemstones are sourced directly from small independent mines and gemstone cutters and dealers in gem regions around the world. Wherever possible, we utilize raw materials and alloys that have been recycled.
“Buying diamonds and gemstones directly from the source guarantees my clientele peace of mind, quality, and value” —Thomas Cooper
