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Radiant|Lab Grown|IGI

1.38ct D FL Radiant Lab Grown Diamond

VG • D/FL • IGI LG818653785

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

Certificate IGI LG818653785

Diamond specifications and retailer prices

From £264 GBP
$352 USD
As of October 30, 2026
Save £2,814 GBP (91%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,079 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 very-good cut grade and certified by IGI LG818653785 or 818653785. Listed at 19 retailers as of October 29, 2026, with prices from £264 to £3,079, a £2,814 spread on the same certified stone. Brilliant Earth lists it at £3,079. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.38
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.8°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818653785
Dimensions7.35 × 5.57 × 3.85 mm
L/W Ratio1.32
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
7.35 mm5.57 mm1.38 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818653785
Side View
Table 60.0%Crown 41.8°Girdle: MED-STKPavilion 35.6°Culet: NoneDepth 69.1%

Caratlytics Score

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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: £3,079 GBP|Low: £246 GBP|High: £3,184 GBP|Avg: £990 GBP|-3.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 30, 2026
Retailer 15£264 GBP
Retailer 14£394 GBP
Retailer 9£450 GBP
Retailer 10£466 GBP
Retailer 8£473 GBP
Retailer 2£486 GBP
Retailer 5£510 GBP
Retailer 13£740 GBP
Retailer 11£845 GBP
Retailer 12£920 GBP
Retailer 7£1,013 GBP
Retailer 3£1,103 GBP
Retailer 6£1,147 GBP
Retailer 4£2,328 GBP
Brilliant Earth£3,079 GBP

29 data points across 15 retailers

19 retailers£264 GBP to £3,079 GBP

A
Cheapest Retailer
-
£264 GBP
$352 USD
Final sale: no returns
Retailer 2
-
£294 GBP
$391 USD
View
Price last confirmed 28 days ago
Retailer 3
-
£343 GBP
$457 USD
View
Price last confirmed 32 days ago
Retailer 4
-
£380 GBP
$506 USD
View
Price last confirmed 27 days ago
A
Retailer 5
-
£394 GBP
$525 USD
View
A
Retailer 6
-
£450 GBP
$599 USD
View
A
Retailer 7
-
£466 GBP
$621 USD
View
A
Retailer 8
-
£473 GBP
ZAR 10,167 ZAR
View
A
Retailer 9
-
£486 GBP
View
A
Retailer 10
-
£510 GBP
€647 EUR
View
B+
Retailer 11
-
£740 GBP
$985 USD
View
B+
Retailer 12
-
£845 GBP
$1,125 USD
View
B+
Retailer 13
-
£920 GBP
$1,226 USD
View
B
Retailer 14
-
£1,013 GBP
SGD 1,823 SGD
View
B
Retailer 15
-
£1,103 GBP
View
B
Retailer 16
-
£1,147 GBP
$1,528 USD
View
Retailer 17
-
£1,220 GBP
$1,625 USD
View
Price last confirmed 29 days ago
Retailer 18
-
£2,328 GBP
$3,100 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21421748A · Oct 29
£3,079 GBP
$4,100 USD
View
18 more retailers have this diamond
Prices start from £264 GBPSave up to £2,814 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
£264 GBP