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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 $800 USD
As of October 29, 2026
Save $3,404 USD (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,204 USD 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 $800 to $4,204, a $3,404 spread on the same certified stone. MOH London lists it at $4,204. 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
Color
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
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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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $4,204 USD|Low: $800 USD|High: $4,238 USD|Avg: $1,971 USD|+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$800 USD
Retailer 2$1,122 USD
Retailer 8$1,221 USD
Retailer 9$1,256 USD
Retailer 5$1,301 USD
Retailer 11$1,860 USD
Retailer 6$2,071 USD
Retailer 7$2,439 USD
Retailer 10$2,640 USD
Retailer 3$2,913 USD
MOH London$4,204 USD

13 data points across 11 retailers

10 retailers$800 USD to $4,204 USD

A
Cheapest Retailer
-
$800 USD
A
Retailer 2
-
$1,122 USD
View
A
Retailer 3
-
$1,221 USD
View
A
Retailer 4
-
$1,256 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,301 USD
View
Retailer 6
-
$1,301 USD
View
Price last confirmed 17 days ago
B
Retailer 7
-
$2,071 USD
View
B
Retailer 8
-
$2,439 USD
View
B
Retailer 9
-
$2,640 USD
View
Most Expensive
B
MOH London
LG447001970 · Oct 29
$4,204 USD
£3,310 GBP
View
9 more retailers have this diamond
Prices start from $800 USDSave up to $3,404 USD

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
$800 USD