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1.18ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG623494620

Shape and cutting style on the report: Round brilliant

Certificate IGI LG623494620

Diamond specifications and retailer prices

From €537 EUR
$600 USD
As of November 2, 2026
1 retailer carries this diamond
Only listing: €537 EUR 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 1.18ct lab-grown round diamond

This 1.18ct 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 LG623494620 or 623494620. 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

1.18
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623494620
Dimensions6.71 × 6.68 × 4.20 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.71 mm6.68 mm1.18 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623494620
Side View
Table 60.0%Crown 35.5°Girdle: Slightly ThickPavilion 41.4°Culet: NoneDepth 62.7%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 2
Current: €537 EUR|Low: €285 EUR|High: €904 EUR|Avg: €478 EUR|-40.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
April 14, 2026
Retailer 8€307 EUR
Retailer 5€422 EUR
Retailer 4€438 EUR
Retailer 2€452 EUR
Retailer 6€481 EUR
Brilliant Earth€537 EUR
Retailer 7€548 EUR
Retailer 3€559 EUR

51 data points across 8 retailers

1 retailer

B+
Brilliant Earth
14285041A · Nov 2
€537 EUR
$600 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+
1.18ct Round
€537 EUR