Our Story
“Built on a single conviction.”
Every diamond should feel as extraordinary as the moment it marks.
Where exceptional diamonds meet timeless craftsmanship.
We founded Tessera Diamonds on the belief that the finest diamonds shouldn’t require a trip to a jewelry district or a relationship with a private broker. Every stone we carry is GIA- or IGI-certified, graded to Triple Excellent standards — cut, polish, and symmetry all at the highest level the industry recognizes.
Our name comes from the tessera, the individual tile in a Roman mosaic — small, precise, and essential. Each diamond we curate is exactly that: a single perfect element that, in the right setting, creates something unforgettable.
We’re based in Texas, and built for the modern buyer — someone who values transparency, quality, and a seamless experience over the theater of a traditional jewelry store.
We source through a global network of vetted diamond suppliers, giving us access to thousands of certified stones at any given moment. Every diamond listed on our site is available and verified. Once you choose your setting, your ring is made to order and ships in 4–6 weeks.
The result is a store where you never wonder what you’re buying. The GIA report arrives with your ring. The grades are real. The price reflects the stone, not the storefront.
Our Mission
“To make exceptional diamonds accessible —
without ever compromising on what exceptional means.”
Our Vision
The future of fine diamonds
is transparent.
Every buyer leaves knowing exactly what they purchased — the grade, the certification, the stone’s full story. No guesswork, no trust-me.
No industry jargon, no pressure, no markups hidden behind glass cases. A store that respects your intelligence and your investment equally.
A standard so consistent and public that “Tessera quality” means something specific — and something you can verify independently before you spend a dollar.
Why We Started
“We built the store we wished we'd had.”
We're Dzmitry and Olga Parkhimovich, and we started Tessera Diamonds in 2026 from Texas. Like most people, our own diamond search left us frustrated — opaque pricing, pressure in the showroom, and the constant sense that we were being sold to rather than helped. We were certain that buying something this meaningful could feel better than that.
So we built the store we wished we'd had. Every diamond we list is independently graded by the GIA or IGI, held to a Triple Excellent standard, and confirmed eye-clean — and we publish exactly what we accept and reject so you never have to take our word for it. Most of the stones offered to us don't make the cut. That filter is the whole point — and it's the same one we'd use buying a ring for our own family.
See exactly what we accept and reject →
Dzmitry & Olga Parkhimovich
Founders
The Tessera Standard
“We only carry what we’d buy ourselves.”
01
GIA & IGI Certified, Every Stone
Every diamond on our site comes with a GIA or IGI grading report. No exceptions, no estimates, no “similar grade” substitutions.
02
Triple Excellent Only
We filter our entire inventory to Excellent or Ideal cut, Excellent polish, and Excellent symmetry. If it doesn’t hit all three, it doesn’t make our collection.
03
Full Transparency
You see the grade, the measurements, the fluorescence, and the cert number before you buy. We believe that knowledge is part of the luxury.
What We Stand For
Four principles.
Every decision.
Precision
We measure quality in microns, not marketing language. Every grade, every measurement, every specification is independently verified by the GIA.
Transparency
You see everything we know about a stone before you buy it. The cert number, the fluorescence, the exact measurements. Nothing is withheld.
Integrity
We only carry what we’d buy ourselves. That filter isn’t a tagline — it’s the reason most available stones never make it into our collection.
Accessibility
World-class diamonds shouldn’t require a world-class contact list. We built Tessera so that anyone, anywhere, can buy with the same confidence a private broker gets.
100%
GIA & IGI Certified
3EX
Cut Standard
30
Day Returns
∞
Year Warranty
See the difference
for yourself.
Browse our collection — every stone GIA- or IGI-certified, every cut Triple Excellent.