CaratHunter
Plans
Oval|Lab Grown|IGI

1.51ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG839685027

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG839685027

Diamond specifications and retailer prices

From £167 GBP
$224 USD
As of October 29, 2026
Save £665 GBP (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £832 GBP at MOH London · As of October 26, 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 LG839685027 or 839685027. Listed at 11 retailers as of October 26, 2026, with prices from £167 to £832, a £665 spread on the same certified stone. MOH London lists it at £832. 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 angle34.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839685027
Dimensions9.26 × 6.44 × 4.04 mm
L/W Ratio1.44
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.26 mm6.44 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839685027
Side View
Table 61.0%Crown 34.9°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.7%

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 29
Current: £832 GBP|Low: £229 GBP|High: £841 GBP|Avg: £524 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 6£229 GBP
Retailer 2£232 GBP
Retailer 5£353 GBP
Retailer 7£383 GBP
Retailer 8£664 GBP
Retailer 3£669 GBP
Retailer 4£694 GBP
MOH London£832 GBP

18 data points across 8 retailers

11 retailers£167 GBP to £832 GBP

A
Cheapest Retailer
-
£167 GBP
$224 USD
A
Retailer 2
-
£194 GBP
$260 USD
View
A
Retailer 3
-
£229 GBP
HK$2,400 HKD
View
A
Retailer 4
-
£232 GBP
View
A
Retailer 5
-
£353 GBP
$473 USD
View
A
Retailer 6
-
£383 GBP
$513 USD
View
B
Retailer 7
-
£664 GBP
SGD 1,202 SGD
View
B
Retailer 8
-
£666 GBP
$893 USD
View
B
Retailer 9
-
£669 GBP
$896 USD
View
Retailer 10
-
£694 GBP
$930 USD
View
Price last confirmed 12 days ago
Most Expensive
B
MOH London
LG839685027 · Oct 26
£832 GBP
View
10 more retailers have this diamond
Prices start from £167 GBPSave up to £665 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
£167 GBP