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1.20ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG502139883

Shape and cutting style on the report: Round brilliant

Certificate IGI LG502139883

Diamond specifications and retailer prices

From $1,615 USD
As of November 6, 2026
1 retailer carries this diamond
Only listing: $1,615 USD at B2C Jewels
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 B2C Jewels

About this 1.2ct lab-grown round diamond

This 1.2ct lab-grown round sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG502139883 or 502139883. Listed at a single retailer as of November 6, 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

1.20
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG502139883
Dimensions6.79 × 6.71 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.79 mm6.71 mm1.20 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG502139883
Side View
Table 58.5%Crown 35.7°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.4%

Caratlytics Score

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C
Average
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Price History

Last verified: Nov 6
Current: $1,615 USD|Low: $1,538 USD|High: $2,658 USD|Avg: $1,962 USD|-39.2%
September 23, 2026
B2C Jewels$1,615 USD

4 data points across 1 retailer

1 retailer

C
B2C Jewels
20034600 · Nov 6
$1,615 USD
View

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C
1.20ct Round
$1,615 USD