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Radiant|Lab Grown|IGI

2.56ct F SI1 Radiant Lab Grown Diamond

EX • F/SI1 • IGI LG678579380

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG678579380

Diamond specifications and retailer prices

From $894 USD
£704 GBP
As of November 2, 2026
1 retailer carries this diamond
Only listing: $894 USD at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 2.56ct lab-grown radiant diamond

This 2.56ct lab-grown radiant sits in the two to three carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG678579380 or 678579380. Listed at a single retailer as of November 2, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.56
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.2°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678579380
Dimensions9.64 × 6.84 × 4.51 mm
L/W Ratio1.41
Top View
9.64 mm6.84 mm2.56 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG678579380
Side View
Table 65.0%Crown 45.2°Girdle: MediumPavilion 35°CuletDepth 65.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 2
Current: $894 USD|Low: $894 USD|High: $894 USD|Avg: $894 USD
September 26, 2026
Diamond Quarter$894 USD

1 data point across 1 retailer

1 retailer

B+
Diamond Quarter
2.56SI1FLG80D1BBN · Nov 2
$894 USD
£704 GBP
View

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
2.56ct Radiant
$894 USD