CaratHunter
Plans
Oval|Lab Grown|IGI

1.51ct I SI2 Oval Lab Grown Diamond

ID • I/SI2 • IGI LG447001970

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG447001970

Diamond specifications and retailer prices

From £597 GBP
$800 USD
As of October 29, 2026
Save £2,540 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,137 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG447001970 or 447001970. Listed at 10 retailers as of October 29, 2026, with prices from £597 to £3,137, a £2,540 spread on the same certified stone. MOH London lists it at £3,137. 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
I
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG447001970
Dimensions8.97 × 6.47 × 4.05 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
8.97 mm6.47 mm1.51 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG447001970
Side View
Table 60.5%Crown 34.9°Girdle: STK-THKPavilion 41.4°Culet: NoneDepth 62.6%

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: £3,137 GBP|Low: £597 GBP|High: £3,163 GBP|Avg: £1,471 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
October 18, 2026
Retailer 4£597 GBP
Retailer 2£837 GBP
Retailer 8£911 GBP
Retailer 9£937 GBP
Retailer 5£971 GBP
Retailer 11£1,388 GBP
Retailer 6£1,546 GBP
Retailer 7£1,820 GBP
Retailer 10£1,970 GBP
Retailer 3£2,174 GBP
MOH London£3,137 GBP

13 data points across 11 retailers

10 retailers£597 GBP to £3,137 GBP

A
Cheapest Retailer
-
£597 GBP
$800 USD
A
Retailer 2
-
£837 GBP
$1,122 USD
View
A
Retailer 3
-
£911 GBP
$1,221 USD
View
A
Retailer 4
-
£937 GBP
$1,256 USD
View
Final sale: no returns
B+
Retailer 5
-
£971 GBP
$1,301 USD
View
Retailer 6
-
£971 GBP
$1,301 USD
View
Price last confirmed 18 days ago
B
Retailer 7
-
£1,546 GBP
$2,071 USD
View
B
Retailer 8
-
£1,820 GBP
$2,439 USD
View
B
Retailer 9
-
£1,970 GBP
$2,640 USD
View
Most Expensive
B
MOH London
LG447001970 · Oct 29
£3,137 GBP
View
9 more retailers have this diamond
Prices start from £597 GBPSave up to £2,540 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
£597 GBP