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Oval|Lab Grown|IGI

1.50ct I SI1 Oval Lab Grown Diamond

ID • I/SI1 • IGI LG451057259

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG451057259

Diamond specifications and retailer prices

From $1,497 NZD
As of November 6, 2026
Save $7,215 NZD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,712 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 1.5ct lab-grown oval diamond

This 1.5ct lab-grown oval sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451057259 or 451057259. Listed at 11 retailers as of November 1, 2026, with prices from $1,497 to $8,712, a $7,215 spread on the same certified stone. MOH London lists it at $8,712. 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

1.50
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451057259
Dimensions8.88 × 6.51 × 4.01 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.88 mm6.51 mm1.50 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451057259
Side View
Table 59.5%Crown 35.3°Girdle: MED-THKPavilion 41.1°Culet: NoneDepth 61.6%

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: Nov 6
Current: $8,712 NZD|Low: $1,497 NZD|High: $8,829 NZD|Avg: $4,312 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2$1,497 NZD
Retailer 3$2,338 NZD
Retailer 6$2,616 NZD
Retailer 4$2,711 NZD
Retailer 7$3,022 NZD
Retailer 9$3,738 NZD
Retailer 5$4,291 NZD
Retailer 8$5,055 NZD
Retailer 10$7,764 NZD
MOH London$8,712 NZD

14 data points across 10 retailers

11 retailers$1,497 NZD to $8,712 NZD

A
Cheapest Retailer
-
$1,497 NZD
A
Retailer 2
-
$2,338 NZD
View
B+
Retailer 3
-
$2,543 NZD
View
B+
Retailer 4
-
$2,616 NZD
View
Final sale: no returns
Retailer 5
-
$2,711 NZD
View
Price last confirmed 25 days ago
B+
Retailer 6
-
$2,711 NZD
View
B+
Retailer 7
-
$3,022 NZD
View
B
Retailer 8
-
$4,291 NZD
View
B
Retailer 9
-
$5,055 NZD
View
B
Retailer 10
-
$5,082 NZD
View
Most Expensive
B
MOH London
LG451057259 · Nov 1
$8,712 NZD
£3,803 GBP
View
10 more retailers have this diamond
Prices start from $1,497 NZDSave up to $7,215 NZD

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
1.50ct Oval
$1,497 NZD