At Soletterre, we reject 98% of the world’s lab-grown diamonds. To be selected for our collection, a stone must surpass these 20 rigorous parameters, ensuring that your diamond isn't just "certified," but extraordinary.
Authentication & Origin
The Foundation
1. Only Gemological Institute of America or International Gemological Institute certified diamonds.
2. Diamonds 0.30ct and above feature a microscopic laser-engraved serial number on the girdle.
3. No post-growth treatments, ensuring the diamond’s beauty is 100% natural and permanent.
4. We analyze the "Comments" section of every lab report to filter out stones with hidden structural or aesthetic issues.
Color & Clarity
The Elite Grade
5. We only use the highest color grades D, E, and F. These stones are icy white, with zero hint of yellow or brown.
6. Strictly flawless (FL) to VVS2. They are not only "eye-clean" but are structurally perfect even under 10x magnification.
7. Zero fluorescence only. We ensure your diamond never appears "milky" or "cloudy" in natural sunlight.
The "Triple Excellent" Performance
Certified by GIA & IGI
8. Only excellent cut. The most critical factor for "fire" and brilliance.
9. Only excellent polish. Ensuring a mirror-smooth surface for maximum light return.
10. Only excellent symmetry. Perfect alignment of facets for a balanced, harmonious sparkle.
"Most jewelers stop at the 4Cs of diamond. At Sōl et terre, that is where we begin."
The "Golden Ratio"
Precision Engineering
We go beyond the 4Cs to inspect the mathematical "DNA" of the diamond
11. Strictly curated ratio. We curate the length-to-width ratio to ensure the diamond shape looks elegant and intentional, never "stubby" or "too long."
12. The most optimized table size to balance internal "fire" with external "brilliance."
13. Calculated for perfect total depth to prevent light from "leaking" out the bottom of the stone.
14. The perfect crown angle to catch and disperse light into a rainbow spectrum.
15. Best angle for crown height to ensure the top of the diamond provides the necessary "lift" for light performance.
16. The calculated pavilion angle, known as the "engine" of the diamond, is precisely angled to bounce light back to your eye.
17. Optimized pavilion depth to eliminate "dark spots" in the center of the stone.
18. Girdle thickness measured to be durable enough for daily wear without adding unnecessary "hidden" weight.
The Visual Masterpiece
19. Only Perfect Pointed Culet to ensure a perfect point at the base of the stone to prevent light leakage.
20. No Bow-Tie Effect allowed. For fancy shapes (Ovals, Pears, Marquise), we manually inspect every stone to ensure there is no dark "bow-tie" shadow across the center, guaranteeing a clear, radiant window into the heart of your diamond.
The Sol et terre Manufacture Standard: 10 Points of Excellence
At Sōl et terre, we believe the quality of the metal must match the brilliance of the stone. Our manufacturing process combines traditional artistry with precision engineering to create pieces that are as durable as they are beautiful.
Each Item is Unique
Precision Engineering
1. Bespoke 3D Engineering. We do not use "all-fit" settings or mass-produced molds. Every piece is bespoke; we create a unique 3D model for each specific stone. This ensures the proportions are mathematically perfect and the setting is tailored exclusively to your diamond’s unique measurements.
2. Hand-Seated Precision. Every center stone is hand-fitted by a master setter. We don't just "drop in" a stone; we sculpt the prongs to the specific silhouette of your diamond, ensuring a secure, custom fit that maximizes light entry.
3. Exclusively with 18K Solid Gold and 950 Platinum. These premium, high-purity metals provide the luxurious weight and enduring strength required for a piece that will be worn every day for a lifetime.
4. Microscopic Quality Control. Every piece undergoes a final inspection under 20x magnification. This ensures your jewelry is flawless even under the macro lens of a wedding photographer, catching details invisible to the naked eye.
5. Micro-Pave Consistency. Our accent diamonds are meticulously sorted to match the center stone’s color and clarity. Each tiny stone is set under a microscope to create a level, "wall of light" finish that feels smooth to the touch and never snags.
Perfection In Every Detail
a promise of integrity
6. Reinforced Structural Integrity: We strategically reinforce our designs—the areas that take the most impact. This hidden engineering ensures your ring maintains its perfect circle and doesn't warp over time.
7. 5-Stage Mirror Polishing: Our pieces undergo an intensive multi-step buffing process. We polish every surface, including the hidden interior galleries, to ensure the piece reflects light from every angle, even the parts only you can see.
8. Laser-Welded Joins: We use precision laser technology for assembly rather than traditional soldering. This creates a molecular bond that is virtually invisible and significantly stronger, resulting in a seamless, "liquid metal" look.
9. High-Density Casting: We utilize advanced high pressure casting to eliminate microscopic air bubbles. This results in a metal that is denser and more scratch-resistant than standard jewelry, providing a superior foundation for your stones.
10. Premium Finish & Hypoallergenic Care: Our 950 Platinum is naturally white and hypoallergenic, while our 18K White Gold is finished with high-micron Rhodium. This provides that signature "Soletterre Icy Glow" that is gentle on sensitive skin and resistant to tarnish.
"From a unique 3D blueprint to the final hand-polish, your Soletterre piece is the only one of its kind in the world."
About Diamonds
A lab-grown diamond is a real diamond. It shares the same chemical composition, crystal structure, and optical properties as a mined/natural diamond. Under professional gemologist testing, it is identified as a diamond.
The only difference is origin: mined diamonds are formed beneath the Earth over billions of years; the other is grown by science in a controlled environment. Both are diamonds.
Instead of developing deep within the earth over billions of years, lab-grown diamonds are created using technology in highly controlled environments to replicate natural diamond-growing conditions.
Same structure, same brilliance, same durability.
Origin, Not Appearance
Mined (Natural) diamonds form over billions of years beneath the earth’s surface. Lab-grown diamonds are created in controlled environments that mirror those conditions. Visually, structurally, and chemically, they are indistinguishable without specialized equipment.
Quality Control
Because lab-grown diamonds are created under precise conditions, they offer exceptional consistency in cut, clarity, and brilliance—qualities highly valued in fine jewellery.
Modern Value Perspective
For many modern buyers, lab-grown diamonds allow greater freedom: investing in design, craftsmanship, and personal priorities without compromising social elegance or aesthetic standards.
So, yes. Lab grown diamonds are real diamonds.
As real as it's meaning, values and how something makes you feel, it's beyond rarity. It's choosing intentionally. It's identity.
Choose Based on the Values You Hold
Ultimately, diamonds aren't just about sparkle, but about the story you want to tell. Natural diamonds offer a classic narrative of natural rarity and a long history, while lab-grown diamonds represent a more conscious, innovative, and relevant modern luxury.
Sol et Terre presents lab-grown diamond jewelry designed with a thoughtful approach to luxury, combining elegant design and craftsmanship, highest quality diamonds, and a commitment to transparency.
Each Diamond Collection is created not just to be worn today, but to accompany life's journey with values that feel personal and responsible.
Using advanced HPHT or CVD technology, scientists replicate the natural diamond‑growing conditions with precision.
This allows for exceptional control over clarity, cut, and quality — resulting in diamonds that often surpass traditional expectations of perfection.
The 4Cs: What Truly Determines Diamond Beauty
Cut
Cut defines brilliance. A well-cut diamond reflects light with precision, creating sparkle that feels alive rather than excessive.
Color
From icy whites to warmer tones, color selection is a matter of taste and harmony with metal choice.
Clarity
Clarity speaks to purity. At Sol et Terre, inclusions are evaluated not only by grade, but by how they appear to the naked eye.
Carat
Carat is presence—not just size. Proportion and balance matter more than numbers alone.
At Sol et Terre, our role is not to overwhelm, but to guide you—so each diamond feels right, not just impressive.
Diamond cut has the greatest impact on brilliance because it determines how light reflects within the stone, making it more important than clarity or color.
Do Lab-Grown Diamonds Sparkle the Same?
It is Science meets beauty.
Brilliance is determined by cut; not by origin. A well-cut lab-grown diamond displays the same fire, scintillation, and light performance as a natural diamond. They have the same brilliance, hardness and durability as mined diamond.
In fact, the controlled growing process often allows for higher clarity and precision, enhancing the diamond’s ability to reflect light beautifully.
For an elegant look that emphasizes classic simplicity, Sol et Terre's Round Diamond Stud Earrings are the ideal choice. Their round cut reflects light in a balanced way, creating a clean shine that feels both serene and timeless.
Meanwhile, for those seeking a soft, modern take, the Round and Pear Diamond Pendant offers the harmony of two contrasting yet harmonious diamond cuts. Its minimalist, effortless, and personal design embodies the balance between beauty and mindfulness.
Never. A lab-grown diamond is a permanent stone. It will not fade, change color, or lose its brilliance. It is as durable as any diamond on earth (a 10 on the Mohs scale), making it a true modern heirloom.
Are Lab-Grown Diamonds Certified?
Yes. Reputable lab-grown diamonds like Sol et Terre are graded and certified by internationally recognized laboratories using the same 4C standards—Cut, Color, Clarity, and Carat Weight; applied to natural diamonds.
Certification matters because it provides transparency and protects the buyer. It ensures that what you see, what you are told, and what you receive are aligned.
At Sol et Terre, certification is not optional. It is fundamental.
Learn more about how lab-grown diamonds are certified
Both lab-grown and natural diamonds of high quality are always certified by international gemological organizations such as the IGI or GIA. These certifications ensure transparency regarding the diamond's origin, formation method, and quality, based on global standards.
For lab-grown diamonds, certification also clearly states that the diamond was created in a laboratory, so there is no ambiguity about its authenticity or origin.
Sol et Terre presents lab-grown diamond jewelleries designed with a thoughtful approach to luxury, combining elegant design and craftsmanship, highest quality diamonds, and a commitment to transparency through certification.
Are Lab-Grown Diamonds Ethical?
It is Science meets beauty.
Lab Grown Diamonds are considered a more ethical choice they avoid environmental damage and reduce many social concerns linked to traditional mining.
Conscious Luxury
True beauty cannot exist without respect for the world that sustains it.
By choosing lab-grown diamonds, we reduce environmental impact and increase traceability. With every purchase, we contribute to sustainability initiatives and animal welfare—ensuring that beauty gives back.
Conscious luxury is not about perfection. It is about responsibility, carried with grace.
Sol et Terre explores and commited to many environmental initiatives, supported by local and global NGOs and moves beyond industry trends towards Earth-specific strategies.
It ensures confidence by allowing size or design adjustments, post-proposal.
Why Modern Luxury Chooses Lab-Grown Diamonds
Conscious Without Compromise
Lab-grown diamonds align with a growing desire for transparency and responsibility, while maintaining the refinement expected in luxury spaces.
Socially Fluent Luxury
For those accustomed to natural diamonds, lab-grown diamonds offer a way to remain aligned with social standards—while choosing to prioritise experiences, growth, or future plans.
Design Freedom
With lab-grown diamonds, clients often explore bolder designs, custom settings, or meaningful collections—such as everyday bangles or personal symbol jewellery.
Why Gen Z prefers lab grown diamonds ?
Because Gen Z values sustainability, transparency and self expression. And luxury today isn't just about rarity. It's about meaning, values, and how something makes you feel. That's why Lab Grown Diamonds feel right for the future.
Your Vision Perfected
Contact us
Choosing or designing a piece of fine jewelry is more than a purchase—it is the creation of a future heirloom. At Soletterre, we believe the experience should be as flawless as the diamond itself. Our private consultations are designed to take the pressure out of the process, providing you with a dedicated expert to guide you through our 20-Parameter Diamond Standard and our Bespoke 3D Manufacture process. Talk to an expert and find your perfect piece