Picking your perfect diamond
Choosing a diamond is simpler than the industry makes it seem. This guide explains what the grades mean, and what actually matters.
Every diamond is graded on the same four scales. This is how to read them.
Cut
Cut determines how a diamond returns light. It is the grade the eye reads first, and the only one of the four that depends entirely on human skill rather than on what the stone arrived with.
- Excellent Maximum brilliance and fire, the full measure of light performance
- Very Good Nearly indistinguishable from Excellent in ordinary light
- Good Noticeably less light return, acceptable in smaller stones
- Fair / Poor Visibly diminished brilliance. We do not set these grades
Choose Excellent or Very Good, nothing below. If the budget asks for a concession, give up carat before brilliance.
Color
Diamonds are graded on a color scale from D (colorless) to Z (light yellow or brown). The less color present, the rarer and more desirable the diamond, though the difference is often invisible to the naked eye.
- D – F Colorless, the highest grade, commanding premium pricing
- G – J Near Colorless, minimal color, visible only side by side
- K – M Faint Color, noticeable tint in larger stones
- N – Z Very Light to Light Color, visible yellow or brown tint
G–H reads colorless to nearly every eye. Pay for what you can see, not for the letter on the report.
Clarity
Clarity refers to the presence of internal inclusions or external blemishes. Most inclusions are microscopic and do not affect the diamond's beauty, and are invisible to the naked eye.
- FL – IF Flawless to Internally Flawless, extremely rare
- VVS1–2 Very Very Slightly Included, an excellent choice
- VS1–2 Very Slightly Included, great value, eye-clean
- SI1–2 Slightly Included, good value if eye-clean
- I1–3 Included, inclusions visible to the naked eye
VS1–VS2 is eye-clean. The difference from VVS exists under a loupe, not across a table.
Carat weight
Carat refers to the diamond's weight, not its physical size. One carat equals 200 milligrams. Two diamonds of the same carat weight can appear different sizes depending on their cut and shape.
- 0.50–0.99ct Delicate and refined: ideal for everyday elegance
- 1.00–1.49ct Classic size: timeless appeal and presence
- 1.50–1.99ct Statement piece: an impressive, noticeable presence
- 2.00ct+ Bold luxury: unmistakable brilliance
Weights just under the round numbers, 0.90 rather than 1.00 carat, look identical on the hand and price very differently.
The Miorenée diamond
This is the specification we hold every Miorenée piece to, set by a team with 30 years of experience selecting stones for visual clarity. Prefer to choose your own diamond? Tell us your preferences and we will source stones to your exact requirements, for your review before setting.
What matters most to you?
Every stone we craft carries the same brilliance, with a clear conscience.
Ethically sourced
No mining. No conflict. Our diamonds are grown in controlled, transparent environments, ensuring every gem is created responsibly.
Environmentally responsible
With a minimal ecological footprint compared to traditional mining, our process preserves natural landscapes for generations to come.
Exceptional value
Up to 40% more affordable than mined diamonds. Superior quality at accessible prices, because luxury should not demand compromise.
Certified quality
Every stone is accompanied by full IGI/GIA certification, ensuring complete authenticity, quality assurance, and peace of mind.
Identical brilliance
Chemically, physically, and optically identical to mined diamonds, with the same fire, sparkle, and durability you expect from the finest stones.
Complete transparency
From origin to your hands, every step of our process is open and traceable. Honest luxury: no hidden costs, no hidden practices.
Ready to find your perfect diamond?
Explore our curated collection of certified lab-grown diamond jewelry, or speak with our team for a personalised consultation.
