Our Types of Diamond
Lab-Grown Diamonds
At De Éternel, our lab-grown diamonds are the zenith of crafted perfection. In pristine, controlled environments, our master artisans replicate—and elevate—nature’s genius. Chemically and visually identical to mined diamonds, these gems are the exclusive domain of those who value both artistry and conscience. Each stone is a bespoke marvel, reserved for connoisseurs of luxury who demand beauty with purpose.
Natural DiamondsForged by the Earth over eons, these treasures are nearly 99.95% carbon, prized for their scarcity and primal allure.
Shape
A diamond’s shape is its overall outline or form (viewed from above). Each shape features unique attributes—like facet count and placement—that define its appearance and style.
ROUND BRILLIANT CUT
The King of Diamonds
The Round Brilliant is the most popular and most researched diamond shape in history. It’s not just “round” — it’s a precisely engineered optical machine designed to maximize brilliance (white light return), fire (colored flashes), and scintillation (sparkle when moved).
PRINCESS CUT
The Square Sparkler
The princess cut is the most popular non-round diamond shape in the world (especially in the US). It’s a modern, square (or very slightly rectangular) brilliant-cut that combines razor-sharp corners with explosive fire.
EMERALD CUT
Rectangular with cropped (beveled) corners → creates an elegant octagonal silhouette.
Classic hallmark: Long, rectangular step-cut facets that run parallel to the girdle, creating broad flashes of light and a “hall-of-mirrors” effect instead of the fiery sparkle of brilliant cuts.
OVAL CUT
The Elegant, Elongated Sparkler
The oval brilliant is essentially a round brilliant that has been stretched into an elliptical shape. It combines the fiery sparkle of a round with a more distinctive, slender silhouette.
RADIANT CUT
The Fiery Rectangle
The radiant cut is the only fancy shape that combines:
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Trimmed (cut-off) corners like an emerald cut
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Brilliant-style faceting like a round → Result: massive fire + modern octagonal outline + built-in corner protection
ASSCHER CUT
Perfectly square with deeply cropped (beveled) corners → an octagonal silhouette, just like emerald but strictly square.
Invented 1902 by the Asscher brothers in Amsterdam (the same family that cut the Cullinan diamond).
PEAR BRILLIANT CUT
The Teardrop
The pear shape is a hybrid: one rounded end like an oval, one pointed end like a marquise. It’s romantic, dramatic, and one of the most finger-flattering shapes available.
CUSHION CUT
The Pillow cut
Because of its soft, rounded corners and sidesSquare or slightly rectangular with rounded corners and curved sides. The length-to-width ratio usually falls between 1.00–1.09 for a true square look; anything 1.10+ starts looking noticeably rectangular (sometimes called “cushion rectangular”).
MARQUISE CUT
Elongated football (navette) shape with two pointed ends. One of the most dramatically lengthening shapes on the finger.
HEART SHAPE CUT
Shape outline A modified pear with a cleft (notch) at the top – the ultimate symbolic, romantic cut.
Key visual features
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Perfectly symmetrical lobes and wings (the two rounded halves must be identical)
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Distinct cleft in the center top
4C's of Diamond
Les 4 C des diamants
Si vous vous demandez ce qu'il faut rechercher dans un diamant, le mieux est de commencer par comprendre les 4 C : taille, couleur, pureté et carat. Créés par le Gemological Institute of America (GIA) dans les années 1940, les 4 C constituent une échelle universelle pour décrire et déterminer la qualité des diamants.
CARAT
La couleur désigne l'absence de couleur dans un diamant. L'échelle va de D (incolore) à Z. Les diamants situés en dehors de cette plage sont considérés comme « de couleur fantaisie ».
CUT
La couleur désigne l'absence de couleur dans un diamant. L'échelle va de D (incolore) à Z. Les diamants situés en dehors de cette plage sont considérés comme « de couleur fantaisie ».
CLARITY
As one of the Diamond 4Cs (Carat, Color, Clarity, Cut), Clarity refers to the absence of internal flaws (inclusions) and external blemishes in a diamond. Formed deep underground over billions of years, diamonds often develop natural “birthmarks” — tiny minerals, air bubbles, or fractures trapped inside (inclusions) or surface imperfections (blemishes) from mining or cutting. Clarity grading measures how visible these flaws are, as they can affect a diamond’s transparency, brilliance, and rarity.
De Éternel's diamonds only provide grades of "FL" , "IF", "VVS1":
COLOR
In the Diamond 4C standard, Color mainly evaluates the degree of colorlessness of white diamonds (colored diamonds are classified separately beyond this system). The globally recognized grading is based on the GIA’s D - Z scale, which divides white diamonds into 23 color grades. This grading directly affects the diamond’s rarity, appearance, and market value. Here is a detailed introduction:
De Éternel's diamonds only provide grades of "D" , "E", "F" & "G":
CERTIFICATION
All De Éternel diamonds hold certification from either the Gemological Institute of America (GIA) or the International Gemological Institute (IGI)—two globally respected leaders in diamond grading, renowned for their strict standards, thorough testing protocols, and unwavering commitment to impartial evaluations. Beyond their trusted certification, our diamonds are sustainably sourced and 100% conflict-free, aligning with ethical practices that prioritize responsibility.
Each GIA or IGI certificate serves as a detailed, authoritative record of a diamond’s key attributes: it outlines the core 4Cs (cut, color, clarity, and carat weight) and supplements this with critical additional metrics like symmetry and polish. For an extra layer of authenticity and traceability, every HauteCarat diamond weighing over 1 carat features a unique laser-inscribed serial number on its girdle—directly matching the information on its corresponding GIA or IGI certificate.
