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Radiant|Lab Grown|IGI

1.39ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG804649569

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG804649569

Diamond specifications and retailer prices

From £273 GBP
As of October 30, 2026
Save £2,813 GBP (91%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,086 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.39ct lab-grown radiant diamond

This 1.39ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804649569 or 804649569. Listed at 9 retailers as of October 29, 2026, with prices from £273 to £3,086, a £2,813 spread on the same certified stone. Brilliant Earth lists it at £3,086. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.39
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.1°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804649569
Dimensions7.68 × 5.67 × 3.76 mm
L/W Ratio1.35
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
7.68 mm5.67 mm1.39 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804649569
Side View
Table 64.0%Crown 45.1°Girdle: MED-STKPavilion 34.9°Culet: NoneDepth 66.3%

Caratlytics Score

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A+
Exceptional
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 30
Current: £3,086 GBP|Low: £222 GBP|High: £3,086 GBP|Avg: £964 GBP
Brilliant Earth
Retailer 2
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October 30, 2026
Retailer 5£222 GBP
Retailer 6£248 GBP
Retailer 2£273 GBP
Retailer 15£400 GBP
Retailer 12£417 GBP
Retailer 4£541 GBP
Retailer 18£618 GBP
Retailer 7£621 GBP
Retailer 3£639 GBP
Retailer 14£736 GBP
Retailer 8£780 GBP
Retailer 16£877 GBP
Retailer 11£1,065 GBP
Retailer 10£1,213 GBP
Retailer 9£1,266 GBP
Retailer 13£1,712 GBP
Retailer 17£2,335 GBP
Brilliant Earth£3,086 GBP

18 data points across 18 retailers

9 retailers£273 GBP to £3,086 GBP

A+
Cheapest Retailer
-
£273 GBP
A
Retailer 2
-
£400 GBP
$533 USD
View
A
Retailer 3
-
£417 GBP
$555 USD
View
B+
Retailer 4
-
£736 GBP
$980 USD
View
B+
Retailer 5
-
£877 GBP
$1,167 USD
View
B+
Retailer 6
-
£1,065 GBP
View
B+
Retailer 7
-
£1,712 GBP
$2,280 USD
View
Retailer 8
-
£2,335 GBP
$3,110 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
21730812Y · Oct 29
£3,086 GBP
$4,110 USD
View
8 more retailers have this diamond
Prices start from £273 GBPSave up to £2,813 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 Radiant
£273 GBP