The 4Cs
Diamond Clarity
From FL to SI2 — how to judge whether a stone will be eye-clean.
Clarity grades run from Flawless (FL) and Internally Flawless (IF) through VVS1, VVS2, VS1, VS2, SI1 and SI2. The grade reflects the size, number, position, nature and relief of inclusions under 10x magnification.
Eye-clean is what matters
For most buyers the practical question is whether inclusions are visible without magnification. VS1 and VS2 are usually eye-clean. SI grades can be, depending on where the inclusions sit. Position matters more than count: an inclusion under the table is far more noticeable than one near the girdle.
Continue reading
Diamond Shapes
How each outline behaves in the light, which proportions matter, and how shape influences perceived size.
The 4Cs
Carat, colour, clarity and cut — what each grade actually measures and where it matters most.
Diamond Certification
Why an independent grading report matters and how to read one with confidence.