1.00 ct Round H SI2 GIA Certified Diamond

Specifications

Stock No

SG100018

Shape

Round

Carat

1.00

Color

H

Clarity

SI2

Cut

Excellent

Polish

Very Good

Symmetry

Excellent

Fluorescence

Strong

Depth

63.4%

Table

57%

Measurements

6.30 x 6.35 x 4.01 mm

Laboratory

GIA

Certificate No

2467957232

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About this diamond

Confidence begins with a clear grading record. For a buyer seeking a GIA certified 1 carat Round H SI2 diamond, this stone offers a documented combination of colour, clarity, cut and proportions. Its GIA grading provides an independent reference for understanding the H colour and SI2 clarity alongside the Excellent cut grade. These are distinct assessments, allowing you to consider the diamond’s appearance through several specific, complementary measures rather than relying on carat weight alone. The measurements, 6.30 x 6.35 x 4.01 mm, give that 1 carat weight a physical context. The two face-up dimensions are closely matched, with a length-to-width ratio of approximately 1.01, describing a near-circular outline. For a 1 carat solitaire, the visible diameter is therefore about 6.3 mm. The 63.4% depth places a relatively substantial portion of the weight vertically, so this round diamond’s face-up spread is more restrained than that of a shallower stone of the same weight. A 57% table sits within a commonly favoured range for round brilliant proportions. Here, it accompanies the deeper 63.4% profile and an Excellent cut grade: the table and depth are useful reference points, while the cut assessment considers the broader relationship between proportions and optical performance. The relatively moderate table leaves room for the surrounding crown facets to contribute dispersion, or coloured flashes. Taken together, these specifications describe a stone whose assessed cut quality should not be reduced to its depth percentage alone. Excellent symmetry and Very Good polish add further detail to that picture. Symmetry assesses the precision of facet arrangement and alignment, while polish concerns the smoothness of the facet surfaces. For this Excellent cut round diamond, Excellent symmetry supports an orderly facet pattern, and Very Good polish indicates a high standard of surface finish. The distinction is worth noting: its finish grades are strong, but they are not identical, giving a more precise account than simply describing every aspect as Excellent. At 1 carat, H colour sits in the near-colourless range, with subtle warmth more readily discernible under controlled comparison than in everyday face-up viewing. SI2 clarity means inclusions are readily noticeable to a trained grader at 10× magnification; the grade alone does not establish whether they are visible unaided. Strong fluorescence records a pronounced response to ultraviolet light, not constant brightness in ordinary lighting. For this H colour stone, that response may influence its appearance in UV-rich conditions. For buyers comparing a round 1 carat diamond with H colour, SI2 clarity and GIA certification, these documented details provide concrete points of comparison: near-circular dimensions, a 57% table, Excellent cut and symmetry, and Strong fluorescence. Seha Diamond’s team can answer detailed questions about this stone and help you understand how its specifications work together.