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Oval|Lab Grown|IGI

1.51ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG550255096

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG550255096

Diamond specifications and retailer prices

From £174 GBP
$233 USD
As of October 29, 2026
Save £695 GBP (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £869 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct lab-grown oval diamond

This 1.51ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG550255096 or 550255096. Listed at 18 retailers as of October 29, 2026, with prices from £174 to £869, a £695 spread on the same certified stone. MOH London lists it at £869. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG550255096
Dimensions9.48 × 6.50 × 3.94 mm
L/W Ratio1.46
Girdle conditionFaceted
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
9.48 mm6.50 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG550255096
Side View
Table 59.0%Crown 34.7°Girdle: MediumPavilion 40.1°Culet: NoneDepth 60.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £869 GBP|Low: £167 GBP|High: £881 GBP|Avg: £460 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
Retailer 14
Retailer 15
October 31, 2026
Retailer 11£174 GBP
Retailer 5£200 GBP
Retailer 10£202 GBP
Retailer 13£216 GBP
Retailer 15£305 GBP
Retailer 9£361 GBP
Retailer 6£404 GBP
Retailer 2£407 GBP
Retailer 8£450 GBP
Retailer 7£471 GBP
Retailer 12£693 GBP
Retailer 14£696 GBP
Retailer 3£698 GBP
Retailer 4£858 GBP
MOH London£869 GBP

43 data points across 15 retailers

18 retailers£174 GBP to £869 GBP

A
Cheapest Retailer
-
£174 GBP
$233 USD
A
Retailer 2
-
£200 GBP
$268 USD
View
Final sale: no returns
A
Retailer 3
-
£202 GBP
$270 USD
View
A
Retailer 4
-
£216 GBP
$289 USD
View
A
Retailer 5
-
£248 GBP
HK$2,600 HKD
View
B+
Retailer 6
-
£305 GBP
$408 USD
View
A
Retailer 7
-
£361 GBP
€461 EUR
View
A
Retailer 8
-
£376 GBP
$504 USD
View
B+
Retailer 9
-
£404 GBP
$541 USD
View
B+
Retailer 10
-
£407 GBP
View
B+
Retailer 11
-
£450 GBP
A$928 AUD
View
B+
Retailer 12
-
£471 GBP
$631 USD
View
B
Retailer 13
-
£693 GBP
$929 USD
View
B
Retailer 14
-
£696 GBP
$932 USD
View
Retailer 15
-
£698 GBP
$935 USD
View
Price last confirmed 12 days ago
B
Retailer 16
-
£729 GBP
SGD 1,320 SGD
View
B
Retailer 17
-
£858 GBP
$1,150 USD
View
Most Expensive
B
MOH London
LG550255096 · Oct 29
£869 GBP
View
17 more retailers have this diamond
Prices start from £174 GBPSave up to £695 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 Oval
£174 GBP