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Round|Lab Grown|IGI

1.39ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG800679970

Shape and cutting style on the report: Round brilliant

Certificate IGI LG800679970

Diamond specifications and retailer prices

From £373 GBP
HK$3,900 HKD
As of October 30, 2026
Save £1,180 GBP (76%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,552 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800679970 or 800679970. Listed at 12 retailers as of October 29, 2026, with prices from £373 to £1,552, a £1,180 spread on the same certified stone. Brilliant Earth lists it at £1,552. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.39
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800679970
Dimensions7.20 × 7.15 × 4.39 mm
L/W Ratio1.01
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
7.20 mm7.15 mm1.39 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800679970
Side View
Table 58.0%Crown 34.3°Girdle: MediumPavilion 41°Culet: NoneDepth 61.1%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £1,552 GBP|Low: £373 GBP|High: £1,605 GBP|Avg: £784 GBP|-3.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 8£373 GBP
Retailer 12£452 GBP
Retailer 9£507 GBP
Retailer 2£520 GBP
Retailer 5£568 GBP
Retailer 4£586 GBP
Retailer 10£647 GBP
Retailer 7£730 GBP
Retailer 3£919 GBP
Retailer 11£1,060 GBP
Retailer 6£1,256 GBP
Brilliant Earth£1,552 GBP

43 data points across 12 retailers

12 retailers£373 GBP to £1,552 GBP

A
Cheapest Retailer
-
£373 GBP
HK$3,900 HKD
A
Retailer 2
-
£452 GBP
$605 USD
View
A
Retailer 3
-
£507 GBP
$679 USD
View
A
Retailer 4
-
£520 GBP
€663 EUR
View
A
Retailer 5
-
£568 GBP
View
A
Retailer 6
-
£586 GBP
A$1,208 AUD
View
A
Retailer 7
-
£647 GBP
$867 USD
View
B+
Retailer 8
-
£730 GBP
$979 USD
View
B+
Retailer 9
-
£919 GBP
$1,231 USD
View
B+
Retailer 10
-
£1,060 GBP
$1,420 USD
View
B+
Retailer 11
-
£1,256 GBP
View
Most Expensive
B
Brilliant Earth
21143623A · Oct 29
£1,552 GBP
$2,080 USD
View
11 more retailers have this diamond
Prices start from £373 GBPSave up to £1,180 GBP

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
£373 GBP