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Radiant|Lab Grown|IGI

1.38ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG801686053

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

Certificate IGI LG801686053

Diamond specifications and retailer prices

From £336 GBP
$450 USD
As of October 30, 2026
Save £1,881 GBP (85%) vs most expensive(unlock to see where)
15 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 LG801686053 or 801686053. Listed at 15 retailers as of October 30, 2026, with a 560% 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 angle43.9°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801686053
Dimensions7.92 × 5.51 × 3.76 mm
L/W Ratio1.44
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
7.92 mm5.51 mm1.38 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801686053
Side View
Table 64.0%Crown 43.9°Girdle: MED-STKPavilion 36.1°Culet: NoneDepth 68.2%

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: £2,306 GBP|Low: £240 GBP|High: £3,142 GBP|Avg: £1,115 GBP|+12.5%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 4£336 GBP
Retailer 5£340 GBP
Retailer 7£419 GBP
Retailer 12£440 GBP
Retailer 10£484 GBP
Retailer 11£556 GBP
Retailer 3£593 GBP
Retailer 9£875 GBP
Retailer 6£1,289 GBP
Retailer 8£2,135 GBP
Retailer 2£2,217 GBP
Rare Carat£2,306 GBP

35 data points across 12 retailers

15 retailers£336 GBP to £2,217 GBP

Retailer 1
-
£254 GBP
$340 USD
Price last confirmed 19 days ago
Retailer 2
-
£294 GBP
$394 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
£336 GBP
$450 USD
View
Final sale: no returns
A
Retailer 4
-
£340 GBP
View
A
Retailer 5
-
£419 GBP
$562 USD
View
A
Retailer 6
-
£440 GBP
$590 USD
View
A
Retailer 7
-
£484 GBP
$648 USD
View
A
Retailer 8
-
£556 GBP
€709 EUR
View
A
Retailer 9
-
£593 GBP
$794 USD
View
B+
Retailer 10
-
£875 GBP
$1,173 USD
View
Retailer 11
-
£1,115 GBP
$1,494 USD
View
Price last confirmed 20 days ago
B+
Retailer 12
-
£1,289 GBP
View
B
Retailer 13
-
£2,135 GBP
$2,860 USD
View
B
Retailer 14
-
£2,217 GBP
$2,970 USD
View
Most Expensive
Rare Carat
B88-9B · Oct 21
£2,306 GBP
$3,090 USD
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from £336 GBPSave up to £1,881 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
£336 GBP