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1.51ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG447001714

Shape and cutting style on the report: Round brilliant

Certificate IGI LG447001714

Diamond specifications and retailer prices

From £627 GBP
$840 USD
As of October 30, 2026
Save £2,487 GBP (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,114 GBP at MOH London · As of October 29, 2026
View at MOH London

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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447001714 or 447001714. Listed at 11 retailers as of October 29, 2026, with prices from £627 to £3,114, a £2,487 spread on the same certified stone. MOH London lists it at £3,114. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle32.3°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447001714
Dimensions7.37 × 7.32 × 4.45 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.37 mm7.32 mm1.51 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG447001714
Side View
Table 57.0%Crown 32.3°Girdle: Slightly ThickPavilion 40°Culet: NoneDepth 60.5%

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: £3,114 GBP|Low: £627 GBP|High: £3,139 GBP|Avg: £1,359 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 2£627 GBP
Retailer 7£787 GBP
Retailer 10£857 GBP
Retailer 12£881 GBP
Retailer 8£914 GBP
Retailer 13£914 GBP
Retailer 6£1,063 GBP
Retailer 4£1,318 GBP
Retailer 9£1,456 GBP
Retailer 11£1,712 GBP
Retailer 3£1,908 GBP
Retailer 5£2,043 GBP
MOH London£3,114 GBP

37 data points across 13 retailers

11 retailers£627 GBP to £3,114 GBP

A
Cheapest Retailer
-
£627 GBP
$840 USD
B+
Retailer 2
-
£787 GBP
$1,055 USD
View
B+
Retailer 3
-
£857 GBP
$1,148 USD
View
B+
Retailer 4
-
£881 GBP
$1,180 USD
View
Final sale: no returns
Retailer 5
-
£914 GBP
$1,224 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
£914 GBP
$1,224 USD
View
B+
Retailer 7
-
£1,063 GBP
View
B
Retailer 8
-
£1,456 GBP
$1,951 USD
View
B
Retailer 9
-
£1,712 GBP
$2,294 USD
View
B
Retailer 10
-
£1,908 GBP
$2,557 USD
View
Most Expensive
B
MOH London
LG447001714 · Oct 29
£3,114 GBP
View
10 more retailers have this diamond
Prices start from £627 GBPSave up to £2,487 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
£627 GBP