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Radiant|Lab Grown|IGI

1.37ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG784642059

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

Certificate IGI LG784642059

Diamond specifications and retailer prices

From £190 GBP
$255 USD
As of October 30, 2026
Save £1,653 GBP (90%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,288 GBP at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 1.37ct lab-grown radiant diamond

This 1.37ct 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 LG784642059 or 784642059. Listed at 15 retailers as of October 30, 2026, with a 869% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.37
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784642059
Dimensions7.75 × 5.56 × 3.74 mm
L/W Ratio1.39
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
7.75 mm5.56 mm1.37 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784642059
Side View
Table 63.0%Crown 39.6°Girdle: Slightly ThickPavilion 35.9°Culet: NoneDepth 67.3%

Caratlytics Score

How it works →
A+
Exceptional
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: £2,288 GBP|Low: £190 GBP|High: £3,120 GBP|Avg: £1,090 GBP|+12.4%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 6£190 GBP
Retailer 4£334 GBP
Retailer 7£361 GBP
Retailer 10£394 GBP
Retailer 12£410 GBP
Retailer 11£446 GBP
Retailer 3£574 GBP
Retailer 9£726 GBP
Retailer 5£1,051 GBP
Retailer 8£1,694 GBP
Retailer 2£1,843 GBP
Rare Carat£2,288 GBP

29 data points across 12 retailers

15 retailers£190 GBP to £1,843 GBP

A+
Cheapest Retailer
-
£190 GBP
$255 USD
Retailer 2
-
£265 GBP
$355 USD
View
Price last confirmed 30 days ago
Retailer 3
-
£307 GBP
$411 USD
View
Price last confirmed 33 days ago
A
Retailer 4
-
£334 GBP
$448 USD
View
Final sale: no returns
A
Retailer 5
-
£361 GBP
$484 USD
View
A
Retailer 6
-
£394 GBP
$528 USD
View
A
Retailer 7
-
£410 GBP
$550 USD
View
A
Retailer 8
-
£446 GBP
€569 EUR
View
A
Retailer 9
-
£574 GBP
$769 USD
View
B+
Retailer 10
-
£726 GBP
$973 USD
View
B+
Retailer 11
-
£1,051 GBP
View
Retailer 12
-
£1,165 GBP
$1,561 USD
View
Price last confirmed 29 days ago
B
Retailer 13
-
£1,694 GBP
$2,270 USD
View
B
Retailer 14
-
£1,843 GBP
$2,470 USD
View
Most Expensive
Rare Carat
P84I-44 · Oct 21
£2,288 GBP
$3,065 USD
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from £190 GBPSave up to £1,653 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+
1.37ct Radiant
£190 GBP