CaratHunter
Plans
Round|Lab Grown|IGI

1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG839676181

Shape and cutting style on the report: Round brilliant

Certificate IGI LG839676181

Diamond specifications and retailer prices

From £247 GBP
As of November 3, 2026
Save £1,953 GBP (89%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £2,200 GBP at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG839676181 or 839676181. Listed at 20 retailers as of November 3, 2026, with prices from £247 to £2,200, a £1,953 spread on the same certified stone. Brilliant Earth lists it at £2,200. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839676181
Dimensions7.37 × 7.41 × 4.50 mm
L/W Ratio1.01
Girdle conditionFaceted
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
7.37 mm7.41 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839676181
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
A+
Exceptional
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: Nov 3
Current: £2,200 GBP|Low: £247 GBP|High: £2,896 GBP|Avg: £686 GBP|-17.7%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 4, 2026
Retailer 18£247 GBP
Retailer 2£276 GBP
Retailer 4£287 GBP
Retailer 5£306 GBP
Retailer 9£310 GBP
Retailer 10£341 GBP
Retailer 17£391 GBP
Retailer 8£415 GBP
Retailer 15£419 GBP
Retailer 16£499 GBP
Retailer 11£500 GBP
Retailer 6£535 GBP
Retailer 14£541 GBP
Retailer 13£719 GBP
Retailer 19£899 GBP
Retailer 3£978 GBP
Retailer 20£984 GBP
Retailer 12£1,092 GBP
Retailer 7£1,244 GBP
Brilliant Earth£2,200 GBP

21 data points across 20 retailers

20 retailers£247 GBP to £2,200 GBP

A+
Cheapest Retailer
-
£247 GBP
A
Retailer 2
-
£276 GBP
View
Final sale: no returns
A
Retailer 3
-
£287 GBP
View
A
Retailer 4
-
£306 GBP
View
Retailer 5
-
£310 GBP
View
Price last confirmed 10 days ago
A
Retailer 6
-
£341 GBP
View
A
Retailer 7
-
£391 GBP
View
A
Retailer 8
-
£415 GBP
View
A
Retailer 9
-
£419 GBP
View
A
Retailer 10
-
£499 GBP
View
A
Retailer 11
-
£500 GBP
View
A
Retailer 12
-
£535 GBP
View
A
Retailer 13
-
£541 GBP
View
A
Retailer 14
-
£719 GBP
View
B+
Retailer 15
-
£899 GBP
View
B+
Retailer 16
-
£978 GBP
View
B+
Retailer 17
-
£984 GBP
View
B+
Retailer 18
-
£1,092 GBP
View
B+
Retailer 19
-
£1,244 GBP
View
Most Expensive
B
Brilliant Earth
21696745A · Nov 3
£2,200 GBP
$2,970 USD
View
19 more retailers have this diamond
Prices start from £247 GBPSave up to £1,953 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 Round
£247 GBP