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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 $1,139 AUD
$800 USD
As of October 29, 2026
Save $4,846 AUD (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,984 AUD 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 $1,139 to $5,984, a $4,846 spread on the same certified stone. MOH London lists it at $5,984. 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
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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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $5,984 AUD|Low: $1,139 AUD|High: $6,033 AUD|Avg: $2,805 AUD|+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$1,139 AUD
Retailer 2$1,597 AUD
Retailer 8$1,738 AUD
Retailer 9$1,788 AUD
Retailer 5$1,852 AUD
Retailer 11$2,648 AUD
Retailer 6$2,948 AUD
Retailer 7$3,472 AUD
Retailer 10$3,758 AUD
Retailer 3$4,146 AUD
MOH London$5,984 AUD

13 data points across 11 retailers

10 retailers$1,139 AUD to $5,984 AUD

A
Cheapest Retailer
-
$1,139 AUD
$800 USD
A
Retailer 2
-
$1,597 AUD
$1,122 USD
View
A
Retailer 3
-
$1,738 AUD
$1,221 USD
View
A
Retailer 4
-
$1,788 AUD
$1,256 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,852 AUD
$1,301 USD
View
Retailer 6
-
$1,852 AUD
$1,301 USD
View
Price last confirmed 19 days ago
B
Retailer 7
-
$2,948 AUD
$2,071 USD
View
B
Retailer 8
-
$3,472 AUD
$2,439 USD
View
B
Retailer 9
-
$3,758 AUD
$2,640 USD
View
Most Expensive
B
MOH London
LG447001970 · Oct 29
$5,984 AUD
£3,310 GBP
View
9 more retailers have this diamond
Prices start from $1,139 AUDSave up to $4,846 AUD

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
$1,139 AUD