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1.39ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG786642414

Shape and cutting style on the report: Round brilliant

Certificate IGI LG786642414

Diamond specifications and retailer prices

From $188 USD
As of October 29, 2026
Save $911 USD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,099 USD at MOH London · As of October 29, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG786642414 or 786642414. Listed at 14 retailers as of October 29, 2026, with prices from $188 to $1,099, a $911 spread on the same certified stone. MOH London lists it at $1,099. 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
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786642414
Dimensions7.21 × 7.17 × 4.40 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
7.21 mm7.17 mm1.39 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786642414
Side View
Table 58.0%Crown 31.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,099 USD|Low: $181 USD|High: $1,125 USD|Avg: $479 USD|-2.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 11$188 USD
Retailer 13$211 USD
Retailer 5$234 USD
Retailer 6$396 USD
Retailer 3$411 USD
Retailer 2$423 USD
Retailer 7$458 USD
Retailer 4$476 USD
Retailer 12$487 USD
Retailer 9$510 USD
Retailer 10$615 USD
Retailer 8$680 USD
MOH London$1,099 USD

34 data points across 13 retailers

14 retailers$188 USD to $1,099 USD

A
Cheapest Retailer
-
$188 USD
A
Retailer 2
-
$211 USD
View
Final sale: no returns
A
Retailer 3
-
$234 USD
View
A
Retailer 4
-
$396 USD
€377 EUR
View
B+
Retailer 5
-
$411 USD
View
A
Retailer 6
-
$423 USD
£333 GBP
View
A
Retailer 7
-
$458 USD
£360 GBP
View
B+
Retailer 8
-
$476 USD
View
B+
Retailer 9
-
$487 USD
View
B+
Retailer 10
-
$510 USD
View
B
Retailer 11
-
$615 USD
View
B+
Retailer 12
-
$680 USD
View
Retailer 13
-
$690 USD
View
Price last confirmed 45 days ago
Most Expensive
B
MOH London
LG786642414 · Oct 29
$1,099 USD
£865 GBP
View
13 more retailers have this diamond
Prices start from $188 USDSave up to $911 USD

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
$188 USD