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Oval|Lab Grown|IGI

1.51ct I SI2 Oval Lab Grown Diamond

ID • I/SI2 • IGI LG451055480

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451055480

Diamond specifications and retailer prices

From $1,139 AUD
$800 USD
As of October 30, 2026
Save $4,822 AUD (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,961 AUD at MOH London · As of October 27, 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 LG451055480 or 451055480. Listed at 10 retailers as of October 27, 2026, with prices from $1,139 to $5,961, a $4,822 spread on the same certified stone. MOH London lists it at $5,961. 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
SymmetryVery Good
FluorescenceNone
Crown angle35.7°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055480
Dimensions8.99 × 6.49 × 4.06 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.99 mm6.49 mm1.51 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG451055480
Side View
Table 56.0%Crown 35.7°Girdle: MED-STKPavilion 40.5°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 30
Current: $5,961 AUD|Low: $1,139 AUD|High: $6,033 AUD|Avg: $2,994 AUD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 25, 2026
Retailer 3$1,139 AUD
Retailer 2$1,597 AUD
Retailer 6$1,788 AUD
Retailer 4$1,852 AUD
Retailer 8$2,648 AUD
Retailer 5$2,948 AUD
Retailer 7$3,758 AUD
Retailer 9$4,146 AUD
MOH London$5,961 AUD

13 data points across 9 retailers

10 retailers$1,139 AUD to $5,961 AUD

A
Cheapest Retailer
-
$1,139 AUD
$800 USD
B+
Retailer 2
-
$1,597 AUD
$1,122 USD
View
B+
Retailer 3
-
$1,738 AUD
$1,221 USD
View
B+
Retailer 4
-
$1,788 AUD
$1,256 USD
View
Final sale: no returns
Retailer 5
-
$1,852 AUD
$1,301 USD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
$1,852 AUD
$1,301 USD
View
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
LG451055480 · Oct 27
$5,961 AUD
£3,297 GBP
View
9 more retailers have this diamond
Prices start from $1,139 AUDSave up to $4,822 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