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1.35ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG577363446

Shape and cutting style on the report: Round brilliant

Certificate IGI LG577363446

Diamond specifications and retailer prices

From $660 USD
As of November 2, 2026
1 retailer carries this diamond
Only listing: $660 USD at Brilliant Earth
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 Brilliant Earth

About this 1.35ct lab-grown round diamond

This 1.35ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG577363446 or 577363446. 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

1.35
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG577363446
Dimensions7.18 × 7.14 × 4.31 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.18 mm7.14 mm1.35 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG577363446
Side View
Table 58.5%Crown 33.1°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.1%

Caratlytics Score

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

Last verified: Nov 2
Current: $660 USD|Low: $337 USD|High: $1,860 USD|Avg: $710 USD|-43.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
June 22, 2026
Retailer 4$348 USD
Retailer 6$419 USD
Retailer 7$528 USD
Retailer 5$529 USD
Retailer 8$570 USD
Retailer 2$638 USD
Brilliant Earth$660 USD
Retailer 3$1,610 USD

58 data points across 8 retailers

1 retailer

B+
Brilliant Earth
7249682Y · Nov 2
$660 USD
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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+
1.35ct Round
$660 USD