7 Carat Lab Grown Round Cut Diamonds

A well-proportioned 7 carat lab grown round cut diamond may measure roughly 12.3–12.4mm across. Exact dimensions remain dependent on the proportions of the individual stone.

Review the position, concentration and visibility of inclusions. At this scale, an inclusion in a central viewing area can behave differently from one positioned nearer the perimeter.

Consider the stone itself together with the intended setting metal. The larger physical size can make subtle colour differences easier to observe than they might be at lower weights.

Pricing depends on the specific stone’s cut, colour, clarity and certification. We provide a detailed quotation once we understand your requirements during consultation, as there is no fixed price at this scale.

Platinum is almost always recommended at this weight for its strength, paired with a bespoke, reinforced setting designed specifically around your chosen stone’s proportions.

Typically 6 to 8 weeks from stone confirmation to a completed piece, though sourcing the stone itself may add time depending on your requirements. We agree a realistic timeline together from the outset.

Yes. We are happy to discuss whether HPHT or CVD growth methods suit your preference, and can provide full documentation of the stone’s origin alongside its certification.

Not fundamentally, but the margin for error shrinks. A pavilion angle just outside ideal range causes light to leak out through the base rather than reflect back to the eye, and at 7 carats this effect is far more visible than on a 1 or 2 carat stone, simply because there is more surface area involved.

Symmetry measures how precisely each facet aligns with the others. On a larger stone, even a slightly misaligned facet catches the eye more easily under close inspection, since the facets themselves are bigger. We only work with cutters who can hold Excellent symmetry at this scale.

Yes, on request. A microscopic inscription, invisible to the naked eye, can be added to the girdle, recording the certificate number so the stone’s documentation always stays linked to the physical diamond.