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Radiant|Lab Grown|IGI

1.38ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG840633231

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

Certificate IGI LG840633231

Diamond specifications and retailer prices

From £263 GBP
$352 USD
As of October 30, 2026
Save £1,752 GBP (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,314 GBP at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 1.38ct lab-grown radiant diamond

This 1.38ct 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 LG840633231 or 840633231. Listed at 13 retailers as of October 30, 2026, with a 667% 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

1.38
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.8°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840633231
Dimensions7.60 × 5.61 × 3.75 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
7.60 mm5.61 mm1.38 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840633231
Side View
Table 69.0%Crown 44.8°Girdle: Slightly ThickPavilion 36.4°Culet: NoneDepth 66.8%

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 30
Current: £2,314 GBP|Low: £263 GBP|High: £3,060 GBP|Avg: £912 GBP|-0.5%
Rare Carat
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 4£263 GBP
Retailer 6£282 GBP
Retailer 10£429 GBP
Retailer 11£447 GBP
Retailer 9£470 GBP
Retailer 7£483 GBP
Retailer 3£507 GBP
Retailer 13£735 GBP
Retailer 12£840 GBP
Retailer 8£1,101 GBP
Retailer 5£1,140 GBP
Retailer 2£2,015 GBP
Rare Carat£2,314 GBP

23 data points across 13 retailers

13 retailers£263 GBP to £2,015 GBP

A
Cheapest Retailer
-
£263 GBP
$352 USD
Final sale: no returns
A
Retailer 2
-
£282 GBP
View
A
Retailer 3
-
£429 GBP
$575 USD
View
A
Retailer 4
-
£447 GBP
$599 USD
View
A
Retailer 5
-
£470 GBP
ZAR 10,167 ZAR
View
A
Retailer 6
-
£483 GBP
View
A
Retailer 7
-
£507 GBP
€647 EUR
View
B+
Retailer 8
-
£735 GBP
$985 USD
View
B+
Retailer 9
-
£840 GBP
$1,125 USD
View
B+
Retailer 10
-
£1,101 GBP
View
B
Retailer 11
-
£1,140 GBP
$1,528 USD
View
B
Retailer 12
-
£2,015 GBP
$2,700 USD
View
Most Expensive
Rare Carat
PD-251763 · Oct 21
£2,314 GBP
$3,100 USD
View
Price last confirmed 9 days ago
12 more retailers have this diamond
Prices start from £263 GBPSave up to £1,752 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
1.38ct Radiant
£263 GBP