Radiant|Lab Grown|IGI

1.51ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG641494187

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

Certificate IGI LG641494187

Diamond specifications and retailer prices

From £212 GBP
$284 USD
As of October 30, 2026
Save £1,919 GBP (90%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £2,130 GBP at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG641494187 or 641494187. Listed at 24 retailers as of October 30, 2026, with prices from £212 to £2,130, a £1,919 spread on the same certified stone. Diamond Quarter lists it at £2,130. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG641494187
Dimensions8.26 × 5.61 × 3.82 mm
L/W Ratio1.47
Culet sizePointed
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
8.26 mm5.61 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG641494187
Side View
Table 61.0%Crown 33.2°Girdle: MediumPavilion 33.1°Culet: NoneDepth 68.1%

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 30
Current: £299 GBP|Low: £204 GBP|High: £1,881 GBP|Avg: £713 GBP|-1.2%
Retailer 1
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
November 1, 2026
Retailer 2£212 GBP
Retailer 9£237 GBP
Retailer 23£246 GBP
Retailer 3£263 GBP
Retailer 13£263 GBP
Retailer 1£299 GBP
Retailer 14£373 GBP
Retailer 19£381 GBP
Retailer 8£432 GBP
Retailer 6£458 GBP
Retailer 18£499 GBP
Retailer 12£518 GBP
Retailer 4£591 GBP
Retailer 17£677 GBP
Retailer 22£808 GBP
Retailer 7£934 GBP
Retailer 16£1,055 GBP
Retailer 11£1,081 GBP
Retailer 10£1,089 GBP
Retailer 15£1,126 GBP
Retailer 21£1,171 GBP
Retailer 20£1,612 GBP
Retailer 5£1,881 GBP

34 data points across 23 retailers

24 retailers£212 GBP to £2,130 GBP

A
Cheapest Retailer
-
£212 GBP
$284 USD
A
Retailer 2
-
£237 GBP
$318 USD
View
Final sale: no returns
A
Retailer 3
-
£246 GBP
$330 USD
View
A
Retailer 4
-
£263 GBP
$353 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
£263 GBP
$353 USD
View
A
Retailer 6
-
£299 GBP
View
A
Retailer 7
-
£373 GBP
HK$3,900 HKD
View
A
Retailer 8
-
£381 GBP
$510 USD
View
A
Retailer 9
-
£432 GBP
$579 USD
View
A
Retailer 10
-
£458 GBP
$613 USD
View
A
Retailer 11
-
£499 GBP
ZAR 10,803 ZAR
View
A
Retailer 12
-
£518 GBP
View
A
Retailer 13
-
£591 GBP
$792 USD
View
A
Retailer 14
-
£677 GBP
A$1,396 AUD
View
B+
Retailer 15
-
£808 GBP
$1,083 USD
View
B+
Retailer 16
-
£934 GBP
$1,251 USD
View
B+
Retailer 17
-
£1,055 GBP
$1,414 USD
View
B+
Retailer 18
-
£1,081 GBP
SGD 1,957 SGD
View
B+
Retailer 19
-
£1,089 GBP
$1,459 USD
View
B+
Retailer 20
-
£1,126 GBP
View
B+
Retailer 21
-
£1,171 GBP
View
Retailer 22
-
£1,612 GBP
$2,160 USD
View
Price last confirmed 13 days ago
B
Retailer 23
-
£1,881 GBP
$2,520 USD
View
Most Expensive
B
Diamond Quarter
1.51IFELG87DFCEN · Oct 31
£2,130 GBP
View
23 more retailers have this diamond
Prices start from £212 GBPSave up to £1,919 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
1.51ct Radiant
£212 GBP