Radiant|Lab Grown|IGI

1.03ct D FL Radiant Lab Grown Diamond

EX • D/FL • IGI LG816623945

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

Certificate IGI LG816623945

Diamond specifications and retailer prices

From £241 GBP
$323 USD
As of October 30, 2026
Save £1,759 GBP (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £2,000 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.03ct lab-grown radiant diamond

This 1.03ct 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 LG816623945 or 816623945. Listed at 19 retailers as of October 30, 2026, with prices from £241 to £2,000, a £1,759 spread on the same certified stone. Brilliant Earth lists it at £2,000. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.7°
Pavilion angle27.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816623945
Dimensions7.10 × 5.16 × 3.14 mm
L/W Ratio1.38
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
7.10 mm5.16 mm1.03 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816623945
Side View
Table 63.0%Crown 40.7°Girdle: STK-THKPavilion 27.6°Culet: NoneDepth 60.9%

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: £2,000 GBP|Low: £232 GBP|High: £2,000 GBP|Avg: £665 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 10£241 GBP
Retailer 4£269 GBP
Retailer 11£299 GBP
Retailer 7£414 GBP
Retailer 12£486 GBP
Retailer 9£504 GBP
Retailer 6£514 GBP
Retailer 2£535 GBP
Retailer 5£731 GBP
Retailer 3£1,160 GBP
Retailer 8£1,201 GBP
Brilliant Earth£2,000 GBP

44 data points across 12 retailers

19 retailers£241 GBP to £2,000 GBP

A
Cheapest Retailer
-
£241 GBP
$323 USD
A
Retailer 2
-
£269 GBP
$361 USD
View
Final sale: no returns
A
Retailer 3
-
£280 GBP
$375 USD
View
A
Retailer 4
-
£299 GBP
$401 USD
View
A
Retailer 5
-
£299 GBP
$401 USD
View
A
Retailer 6
-
£414 GBP
$555 USD
View
B+
Retailer 7
-
£456 GBP
$611 USD
View
B+
Retailer 8
-
£486 GBP
$651 USD
View
Retailer 9
-
£504 GBP
€643 EUR
View
Price last confirmed 7 days ago
B+
Retailer 10
-
£514 GBP
ZAR 11,133 ZAR
View
B+
Retailer 11
-
£535 GBP
View
B+
Retailer 12
-
£731 GBP
$979 USD
View
B+
Retailer 13
-
£799 GBP
SGD 1,447 SGD
View
B
Retailer 14
-
£962 GBP
$1,289 USD
View
B
Retailer 15
-
£996 GBP
$1,334 USD
View
B
Retailer 16
-
£1,160 GBP
View
B
Retailer 17
-
£1,185 GBP
$1,587 USD
View
B
Retailer 18
-
£1,201 GBP
View
Most Expensive
B
Brilliant Earth
21092347A · Oct 30
£2,000 GBP
$2,680 USD
View
18 more retailers have this diamond
Prices start from £241 GBPSave up to £1,759 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
1.03ct Radiant
£241 GBP