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Round|Lab Grown|IGI

1.51ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG838619572

Shape and cutting style on the report: Round brilliant

Certificate IGI LG838619572

Diamond specifications and retailer prices

From £245 GBP
As of November 3, 2026
Save £1,925 GBP (89%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £2,170 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 LG838619572 or 838619572. Listed at 20 retailers as of November 3, 2026, with prices from £245 to £2,170, a £1,925 spread on the same certified stone. Brilliant Earth lists it at £2,170. 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 angle35.7°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838619572
Dimensions7.28 × 7.31 × 4.54 mm
L/W Ratio1.00
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
7.28 mm7.31 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838619572
Side View
Table 58.0%Crown 35.7°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.2%

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: £2,170 GBP|Low: £245 GBP|High: £2,852 GBP|Avg: £673 GBP|-17.7%
Brilliant Earth
Retailer 2
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Retailer 12
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Retailer 20
November 4, 2026
Retailer 18£245 GBP
Retailer 20£274 GBP
Retailer 6£284 GBP
Retailer 7£304 GBP
Retailer 10£310 GBP
Retailer 3£332 GBP
Retailer 17£388 GBP
Retailer 15£419 GBP
Retailer 13£492 GBP
Retailer 16£496 GBP
Retailer 9£496 GBP
Retailer 8£528 GBP
Retailer 14£538 GBP
Retailer 2£714 GBP
Retailer 19£892 GBP
Retailer 5£973 GBP
Retailer 4£978 GBP
Retailer 12£1,084 GBP
Retailer 11£1,245 GBP
Brilliant Earth£2,170 GBP

20 data points across 20 retailers

20 retailers£245 GBP to £2,170 GBP

A+
Cheapest Retailer
-
£245 GBP
A
Retailer 2
-
£274 GBP
View
Final sale: no returns
A
Retailer 3
-
£284 GBP
View
A
Retailer 4
-
£304 GBP
View
Retailer 5
-
£310 GBP
View
Price last confirmed 10 days ago
A
Retailer 6
-
£332 GBP
View
A
Retailer 7
-
£388 GBP
View
A
Retailer 8
-
£419 GBP
View
A
Retailer 9
-
£492 GBP
View
A
Retailer 10
-
£496 GBP
View
A
Retailer 11
-
£496 GBP
View
A
Retailer 12
-
£528 GBP
View
A
Retailer 13
-
£538 GBP
View
A
Retailer 14
-
£714 GBP
View
B+
Retailer 15
-
£892 GBP
View
B+
Retailer 16
-
£973 GBP
View
B+
Retailer 17
-
£978 GBP
View
B+
Retailer 18
-
£1,084 GBP
View
Retailer 19
-
£1,245 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
21621094A · Nov 3
£2,170 GBP
$2,930 USD
View
19 more retailers have this diamond
Prices start from £245 GBPSave up to £1,925 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
£245 GBP