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Radiant|Lab Grown|IGI

1.02ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG816638179

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

Certificate IGI LG816638179

Diamond specifications and retailer prices

From £137 GBP
$182 USD
As of October 27, 2026
Save £1,072 GBP (89%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,209 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.02ct lab-grown radiant diamond

This 1.02ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816638179 or 816638179. Listed at 21 retailers as of October 27, 2026, with prices from £137 to £1,209, a £1,072 spread on the same certified stone. Brilliant Earth lists it at £1,209. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.02
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816638179
Dimensions7.13 × 5.03 × 3.39 mm
L/W Ratio1.42
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
7.13 mm5.03 mm1.02 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816638179
Side View
Table 65.0%Crown 40.1°Girdle: MediumPavilion 37.6°Culet: NoneDepth 67.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: £1,209 GBP|Low: £137 GBP|High: £1,209 GBP|Avg: £407 GBP
Brilliant Earth
Retailer 2
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October 29, 2026
Retailer 4£137 GBP
Retailer 8£152 GBP
Retailer 19£158 GBP
Retailer 3£170 GBP
Retailer 9£170 GBP
Retailer 13£180 GBP
Retailer 11£229 GBP
Retailer 14£291 GBP
Retailer 17£300 GBP
Retailer 2£306 GBP
Retailer 6£406 GBP
Retailer 15£413 GBP
Retailer 20£424 GBP
Retailer 18£427 GBP
Retailer 12£462 GBP
Retailer 5£545 GBP
Retailer 7£586 GBP
Retailer 16£793 GBP
Retailer 10£853 GBP
Brilliant Earth£1,209 GBP

33 data points across 20 retailers

21 retailers£137 GBP to £1,209 GBP

A
Cheapest Retailer
-
£137 GBP
$182 USD
A
Retailer 2
-
£152 GBP
$203 USD
View
Final sale: no returns
A
Retailer 3
-
£158 GBP
$211 USD
View
A
Retailer 4
-
£170 GBP
$226 USD
View
A
Retailer 5
-
£170 GBP
$226 USD
View
A
Retailer 6
-
£180 GBP
View
B+
Retailer 7
-
£229 GBP
$305 USD
View
A
Retailer 8
-
£291 GBP
ZAR 6,264 ZAR
View
A
Retailer 9
-
£300 GBP
€381 EUR
View
A
Retailer 10
-
£306 GBP
View
A
Retailer 11
-
£406 GBP
$540 USD
View
A
Retailer 12
-
£413 GBP
A$847 AUD
View
A
Retailer 13
-
£424 GBP
$564 USD
View
A
Retailer 14
-
£427 GBP
$569 USD
View
A
Retailer 15
-
£462 GBP
SGD 831 SGD
View
B+
Retailer 16
-
£545 GBP
$726 USD
View
B+
Retailer 17
-
£586 GBP
$780 USD
View
B+
Retailer 18
-
£793 GBP
View
B+
Retailer 19
-
£853 GBP
$1,136 USD
View
B
Retailer 20
-
£907 GBP
$1,207 USD
View
Price last confirmed 86 days ago
Most Expensive
B
Brilliant Earth
20708617A · Oct 28
£1,209 GBP
$1,610 USD
View
20 more retailers have this diamond
Prices start from £137 GBPSave up to £1,072 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
1.02ct Radiant
£137 GBP