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Round|Lab Grown|IGI

1.39ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG766644620

Shape and cutting style on the report: Round brilliant

Certificate IGI LG766644620

Diamond specifications and retailer prices

From €351 EUR
As of November 2, 2026
Save €615 EUR (64%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €967 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 1.39ct lab-grown round diamond

This 1.39ct 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 LG766644620 or 766644620. Listed at 9 retailers as of November 1, 2026, with prices from €351 to €967, a €615 spread on the same certified stone. MOH London lists it at €967. 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

1.39
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG766644620
Dimensions7.13 × 7.08 × 4.47 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
7.13 mm7.08 mm1.39 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG766644620
Side View
Table 57.0%Crown 36.1°Girdle: MediumPavilion 41.2°Culet: NoneDepth 63.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: €967 EUR|Low: €334 EUR|High: €995 EUR|Avg: €488 EUR|-2.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 3€351 EUR
Retailer 7€363 EUR
Retailer 4€374 EUR
Retailer 8€424 EUR
Retailer 6€434 EUR
Retailer 5€443 EUR
Retailer 2€550 EUR
Retailer 9€590 EUR
MOH London€967 EUR

34 data points across 9 retailers

9 retailers€351 EUR to €967 EUR

A
Cheapest Retailer
-
€351 EUR
B+
Retailer 2
-
€363 EUR
$406 USD
View
A
Retailer 3
-
€374 EUR
£329 GBP
View
A
Retailer 4
-
€424 EUR
$474 USD
View
A
Retailer 5
-
€434 EUR
$485 USD
View
A
Retailer 6
-
€443 EUR
$495 USD
View
B+
Retailer 7
-
€550 EUR
$615 USD
View
B+
Retailer 8
-
€590 EUR
$660 USD
View
Most Expensive
B
MOH London
LG766644620 · Nov 1
€967 EUR
£851 GBP
View
8 more retailers have this diamond
Prices start from €351 EURSave up to €615 EUR

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.

A
1.39ct Round
€351 EUR