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Oval|Lab Grown|IGI

1.51ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG839685027

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG839685027

Diamond specifications and retailer prices

From $397 NZD
$224 USD
As of October 29, 2026
Save $1,579 NZD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,976 NZD at MOH London · As of November 1, 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 LG839685027 or 839685027. Listed at 11 retailers as of October 29, 2026, with prices from $397 to $1,976, a $1,579 spread on the same certified stone. MOH London lists it at $1,976. 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 angle34.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839685027
Dimensions9.26 × 6.44 × 4.04 mm
L/W Ratio1.44
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.26 mm6.44 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839685027
Side View
Table 61.0%Crown 34.9°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.7%

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: Oct 29
Current: $1,976 NZD|Low: $381 NZD|High: $1,999 NZD|Avg: $1,126 NZD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 5$397 NZD
Retailer 11$461 NZD
Retailer 8$545 NZD
Retailer 2$549 NZD
Retailer 7$839 NZD
Retailer 9$910 NZD
Retailer 3$1,578 NZD
Retailer 10$1,584 NZD
Retailer 4$1,590 NZD
Retailer 6$1,650 NZD
MOH London$1,976 NZD

22 data points across 11 retailers

11 retailers$397 NZD to $1,976 NZD

A
Cheapest Retailer
-
$397 NZD
$224 USD
A
Retailer 2
-
$461 NZD
$260 USD
View
A
Retailer 3
-
$545 NZD
HK$2,400 HKD
View
A
Retailer 4
-
$549 NZD
£244 GBP
View
A
Retailer 5
-
$839 NZD
$473 USD
View
A
Retailer 6
-
$910 NZD
$513 USD
View
B
Retailer 7
-
$1,578 NZD
SGD 1,202 SGD
View
B
Retailer 8
-
$1,584 NZD
$893 USD
View
B
Retailer 9
-
$1,590 NZD
$896 USD
View
Retailer 10
-
$1,650 NZD
$930 USD
View
Price last confirmed 13 days ago
Most Expensive
B
MOH London
LG839685027 · Nov 1
$1,976 NZD
£877 GBP
View
10 more retailers have this diamond
Prices start from $397 NZDSave up to $1,579 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
$397 NZD