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Radiant|Lab Grown|IGI

1.38ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG766669517

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

Certificate IGI LG766669517

Diamond specifications and retailer prices

From £252 GBP
$338 USD
As of October 30, 2026
Save £2,054 GBP (89%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £2,306 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 LG766669517 or 766669517. Listed at 23 retailers as of October 30, 2026, with a 814% 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.6°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG766669517
Dimensions8.25 × 5.67 × 3.59 mm
L/W Ratio1.46
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
8.25 mm5.67 mm1.38 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG766669517
Side View
Table 62.0%Crown 41.6°Girdle: MediumPavilion 34.1°Culet: NoneDepth 63.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £2,306 GBP|Low: £252 GBP|High: £3,045 GBP|Avg: £998 GBP|-1.3%
Rare Carat
Retailer 2
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October 31, 2026
Retailer 3£252 GBP
Retailer 11£282 GBP
Retailer 22£293 GBP
Retailer 6£313 GBP
Retailer 12£313 GBP
Retailer 18£356 GBP
Retailer 20£425 GBP
Retailer 15£430 GBP
Retailer 13£435 GBP
Retailer 5£500 GBP
Retailer 23£581 GBP
Retailer 19£593 GBP
Retailer 2£623 GBP
Retailer 7£916 GBP
Retailer 4£1,109 GBP
Retailer 9£1,215 GBP
Retailer 16£1,226 GBP
Retailer 14£1,250 GBP
Retailer 10£1,342 GBP
Retailer 21£1,350 GBP
Retailer 8£2,239 GBP
Rare Carat£2,306 GBP
Retailer 17£2,306 GBP

38 data points across 23 retailers

23 retailers£252 GBP to £2,306 GBP

A
Cheapest Retailer
-
£252 GBP
$338 USD
A
Retailer 2
-
£282 GBP
$378 USD
View
Final sale: no returns
A
Retailer 3
-
£293 GBP
$392 USD
View
A
Retailer 4
-
£313 GBP
$419 USD
View
A
Retailer 5
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£313 GBP
$419 USD
View
A
Retailer 6
-
£356 GBP
View
A
Retailer 7
-
£425 GBP
$570 USD
View
A
Retailer 8
-
£430 GBP
HK$4,500 HKD
View
A
Retailer 9
-
£435 GBP
$583 USD
View
A
Retailer 10
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£500 GBP
$670 USD
View
A
Retailer 11
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£581 GBP
$779 USD
View
A
Retailer 12
-
£593 GBP
ZAR 12,835 ZAR
View
A
Retailer 13
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£623 GBP
View
B+
Retailer 14
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£916 GBP
$1,228 USD
View
B+
Retailer 15
-
£1,109 GBP
$1,486 USD
View
B
Retailer 16
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£1,215 GBP
$1,627 USD
View
B
Retailer 17
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£1,226 GBP
$1,642 USD
View
B
Retailer 18
-
£1,250 GBP
SGD 2,263 SGD
View
B
Retailer 19
-
£1,342 GBP
View
B+
Retailer 20
-
£1,350 GBP
View
B
Retailer 21
-
£2,239 GBP
$3,000 USD
View
B
Retailer 22
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£2,306 GBP
$3,090 USD
View
Most Expensive
Rare Carat
BH-17A · Oct 21
£2,306 GBP
$3,090 USD
View
Price last confirmed 10 days ago
22 more retailers have this diamond
Prices start from £252 GBPSave up to £2,054 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
£252 GBP