1.51 ct Round D SI2 HRD Certified Diamond

Specifications

Stock No

SH100006

Shape

Round

Carat

1.51

Color

D

Clarity

SI2

Cut

Excellent

Polish

Excellent

Symmetry

Excellent

Fluorescence

None

Depth

63.2%

Table

58%

Measurements

7.25 x 7.30 x 4.60 mm

Laboratory

HRD

Certificate No

260000134398

Verify on HRD ↗

About this diamond

For a buyer who wants a colourless centre stone for a platinum solitaire or a white-gold engagement ring, this 1.51 carat Round D SI2 HRD certified diamond puts colour at the centre of the decision. D is the highest grade on the diamond colour scale, so the appeal here is an absence of body colour rather than a warmer tint. At 1.51 carat, that colourless character accompanies a substantial round outline, making the stone particularly suited to settings that keep its bright face-up appearance in focus. Platinum and white gold offer a neutral backdrop for this D colour round diamond, allowing the centre to read as colourless without a strong surrounding colour contrast. Yellow or rose gold creates a different effect: the metal brings warmth around a stone whose body colour remains D. A white-metal head on a yellow-gold band can separate those roles, framing the diamond neutrally while retaining a warmer ring design. With no fluorescence, this stone has no reported fluorescent response under ultraviolet light; its colourless grade does not depend on blue fluorescence to counter a yellow tint. The measurements of 7.25 x 7.30 x 4.60 mm give this 1.51 carat diamond an almost circular face-up outline, with only 0.05 mm between its two diameters. Its average diameter is approximately 7.28 mm, the dimension that helps you picture its presence across the finger. The 63.2% depth places its proportions on the deeper side for a round brilliant, so some of its weight sits vertically rather than contributing to spread. For a 1.51 carat solitaire ring, that distinction matters: carat weight describes mass, while these measurements describe the visible footprint. A 58% table provides a balanced central facet size rather than an unusually broad window across the crown. Read alongside the 63.2% depth and HRD Excellent cut grade, it describes a round brilliant with a deeper profile but an overall cut assessment at the laboratory’s Excellent level. Excellent polish supports clean reflection at the facet surfaces, while Excellent symmetry records precise facet alignment. Together, those finish grades complement the cut, helping the D colour presentation rely on well-organised reflections as well as an absence of body tint. SI2 clarity is the deliberate contrast within this specification: the highest colour grade is paired with inclusions readily visible under 10× magnification. At 1.51 carat, their visibility without magnification cannot be established from the clarity grade alone. HRD certification covers this diamond’s stated colour, clarity, cut, polish and symmetry, keeping those distinctions clear rather than treating D colour as a promise of flawless clarity. With D colour and SI2 clarity, this HRD certified 1.51 carat round diamond suits a buyer who prioritises a colourless centre, Excellent cut and finish, and a setting that gives its approximately 7.28 mm outline room to stand out.