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Oval|Lab Grown|IGI

1.51ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG550255096

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG550255096

Diamond specifications and retailer prices

From $413 NZD
$233 USD
As of November 1, 2026
Save $1,653 NZD (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,066 NZD 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG550255096 or 550255096. Listed at 18 retailers as of October 29, 2026, with prices from $413 to $2,066, a $1,653 spread on the same certified stone. MOH London lists it at $2,066. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG550255096
Dimensions9.48 × 6.50 × 3.94 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.48 mm6.50 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG550255096
Side View
Table 59.0%Crown 34.7°Girdle: MediumPavilion 40.1°Culet: NoneDepth 60.6%

Caratlytics Score

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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: Nov 1
Current: $2,066 NZD|Low: $397 NZD|High: $2,094 NZD|Avg: $1,093 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 1, 2026
Retailer 11$413 NZD
Retailer 5$476 NZD
Retailer 10$479 NZD
Retailer 13$513 NZD
Retailer 15$724 NZD
Retailer 9$859 NZD
Retailer 6$960 NZD
Retailer 2$967 NZD
Retailer 8$1,070 NZD
Retailer 7$1,120 NZD
Retailer 12$1,648 NZD
Retailer 14$1,654 NZD
Retailer 3$1,659 NZD
Retailer 4$2,040 NZD
MOH London$2,066 NZD

43 data points across 15 retailers

18 retailers$413 NZD to $2,066 NZD

A
Cheapest Retailer
-
$413 NZD
$233 USD
A
Retailer 2
-
$476 NZD
$268 USD
View
Final sale: no returns
A
Retailer 3
-
$479 NZD
$270 USD
View
A
Retailer 4
-
$513 NZD
$289 USD
View
A
Retailer 5
-
$590 NZD
HK$2,600 HKD
View
B+
Retailer 6
-
$724 NZD
$408 USD
View
A
Retailer 7
-
$859 NZD
€461 EUR
View
A
Retailer 8
-
$894 NZD
$504 USD
View
B+
Retailer 9
-
$960 NZD
$541 USD
View
B+
Retailer 10
-
$967 NZD
£429 GBP
View
B+
Retailer 11
-
$1,070 NZD
A$928 AUD
View
B+
Retailer 12
-
$1,120 NZD
$631 USD
View
B
Retailer 13
-
$1,648 NZD
$929 USD
View
B
Retailer 14
-
$1,654 NZD
$932 USD
View
B
Retailer 15
-
$1,659 NZD
$935 USD
View
B
Retailer 16
-
$1,733 NZD
SGD 1,320 SGD
View
B
Retailer 17
-
$2,040 NZD
$1,150 USD
View
Most Expensive
B
MOH London
LG550255096 · Oct 29
$2,066 NZD
£917 GBP
View
17 more retailers have this diamond
Prices start from $413 NZDSave up to $1,653 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
1.51ct Oval
$413 NZD