1.50 ct Round J SI1 GIA Certified Diamond

Specifications

Stock No

SG100024

Shape

Round

Carat

1.50

Color

J

Clarity

SI1

Cut

Excellent

Polish

Excellent

Symmetry

Excellent

Fluorescence

None

Depth

62.7%

Table

58%

Measurements

7.26 x 7.30 x 4.57 mm

Laboratory

GIA

Certificate No

1242019701

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About this diamond

A round diamond’s character depends on more than its outline: in this GIA-certified 1.5 carat Round J SI1 diamond, Excellent polish and Excellent symmetry support an Excellent cut grade. Those three grades describe distinct aspects of the stone’s workmanship, from the finish of its facets to their alignment and the overall quality of the cut. Together, they make precision the central feature of this particular round brilliant, while its J colour and SI1 clarity give that precision a specific visual context. Excellent polish indicates a high standard of facet surface finish, helping light pass through and reflect without significant interference from polishing marks. Excellent symmetry describes the consistency of facet placement and alignment, contributing to an orderly pattern of reflections across the round diamond. Neither grade alone establishes light performance, but here they accompany GIA’s Excellent cut assessment. For a 1.5 carat solitaire, that combination matters: the stone has enough presence for its pattern of bright and dark reflections to become a defining part of its appearance. The proportions add detail to that craftsmanship. A 58% table gives this stone a moderately sized central facet within the range commonly associated with well-proportioned round brilliants, leaving room for the surrounding crown facets that help produce coloured flashes. Its 62.7% depth sits towards the deeper side of familiar Excellent-cut round proportions. These percentages work as part of the complete facet geometry rather than as isolated targets; the GIA Excellent cut grade places their interaction within an overall assessment of brightness, fire, scintillation and cut quality. Measuring 7.26 x 7.30 x 4.57 mm, this 1.5 carat round diamond presents a face-up diameter of approximately 7.28 mm. The difference between its two diameter measurements is just 0.04 mm, consistent with a closely rounded outline and its Excellent symmetry grade. The 4.57 mm height also makes the depth percentage tangible: some of the stone’s weight sits vertically beneath that face-up footprint. For a 1.5 carat diamond ring, these measurements provide a more useful sense of its visible scale than carat weight alone. J colour brings a degree of warmth within GIA’s near-colourless range, potentially more noticeable from the side than through the bright face-up pattern of this Excellent-cut stone. SI1, or Slightly Included 1, means inclusions are noticeable to a skilled grader at 10× magnification; it does not by itself establish whether they are visible without magnification. None fluorescence means no fluorescence was detected under the grading conditions, so there is no fluorescence-related blue effect to modify that warmth. GIA’s report documents this round diamond’s colour, clarity, cut, finish, measurements and fluorescence. For detailed questions about this J SI1 round diamond of 1.5 carat, certified by GIA, Seha Diamond’s team can explain how these specifications relate to your priorities.