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Radiant|Lab Grown|IGI

1.00ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG840633325

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

Certificate IGI LG840633325

Diamond specifications and retailer prices

From £171 GBP
$229 USD
As of October 30, 2026
Save £1,404 GBP (89%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,575 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840633325 or 840633325. Listed at 21 retailers as of October 28, 2026, with prices from £171 to £1,575, a £1,404 spread on the same certified stone. Rare Carat lists it at £1,575. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.1°
Pavilion angle37°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840633325
Dimensions6.78 × 5.01 × 3.44 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
6.78 mm5.01 mm1.00 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840633325
Side View
Table 68.0%Crown 42.1°Girdle: Slightly ThickPavilion 37°Culet: NoneDepth 68.7%

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: £1,575 GBP|Low: £171 GBP|High: £1,933 GBP|Avg: £604 GBP|-0.7%
Rare Carat
Retailer 2
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Retailer 21
October 31, 2026
Retailer 12£171 GBP
Retailer 4£191 GBP
Retailer 19£198 GBP
Retailer 11£212 GBP
Retailer 18£212 GBP
Retailer 15£219 GBP
Retailer 5£360 GBP
Retailer 16£364 GBP
Retailer 3£367 GBP
Retailer 20£385 GBP
Retailer 2£393 GBP
Retailer 7£410 GBP
Retailer 10£596 GBP
Retailer 9£681 GBP
Retailer 6£683 GBP
Retailer 8£720 GBP
Retailer 21£771 GBP
Retailer 17£849 GBP
Retailer 13£1,343 GBP
Retailer 14£1,414 GBP
Rare Carat£1,575 GBP

24 data points across 21 retailers

21 retailers£171 GBP to £1,575 GBP

A
Cheapest Retailer
-
£171 GBP
$229 USD
A
Retailer 2
-
£191 GBP
$256 USD
View
Final sale: no returns
A
Retailer 3
-
£198 GBP
$265 USD
View
A
Retailer 4
-
£212 GBP
$284 USD
View
A
Retailer 5
-
£212 GBP
$284 USD
View
A
Retailer 6
-
£219 GBP
View
A
Retailer 7
-
£360 GBP
$482 USD
View
A
Retailer 8
-
£364 GBP
ZAR 7,874 ZAR
View
Retailer 9
-
£367 GBP
€468 EUR
View
Price last confirmed 8 days ago
A
Retailer 10
-
£385 GBP
$516 USD
View
A
Retailer 11
-
£393 GBP
View
A
Retailer 12
-
£410 GBP
$550 USD
View
B+
Retailer 13
-
£596 GBP
SGD 1,080 SGD
View
B+
Retailer 14
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£681 GBP
$912 USD
View
B+
Retailer 15
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£683 GBP
$915 USD
View
B+
Retailer 16
-
£720 GBP
$964 USD
View
B+
Retailer 17
-
£771 GBP
$1,033 USD
View
B+
Retailer 18
-
£849 GBP
View
B
Retailer 19
-
£1,343 GBP
$1,800 USD
View
B
Retailer 20
-
£1,414 GBP
$1,894 USD
View
Most Expensive
B
Rare Carat
JH-250280 · Oct 28
£1,575 GBP
$2,110 USD
View
20 more retailers have this diamond
Prices start from £171 GBPSave up to £1,404 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
1.00ct Radiant
£171 GBP