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Oval|Lab Grown|IGI

1.51ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG732547933

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG732547933

Diamond specifications and retailer prices

From $355 NZD
$200 USD
As of October 29, 2026
Save $2,590 NZD (88%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,945 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 LG732547933 or 732547933. Listed at 13 retailers as of October 29, 2026, with prices from $355 to $2,945, a $2,590 spread on the same certified stone. Brilliant Earth lists it at $2,945. 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 angle34.6°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG732547933
Dimensions8.91 × 6.49 × 4.12 mm
L/W Ratio1.37
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.91 mm6.49 mm1.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG732547933
Side View
Table 56.0%Crown 34.6°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 63.5%

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: $2,945 NZD|Low: $341 NZD|High: $3,052 NZD|Avg: $1,031 NZD|-3.5%
Brilliant Earth
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 13$355 NZD
Retailer 6$412 NZD
Retailer 5$440 NZD
Retailer 14$440 NZD
Retailer 8$491 NZD
Retailer 15$765 NZD
Retailer 11$782 NZD
Retailer 2$800 NZD
Retailer 3$875 NZD
Retailer 7$896 NZD
Retailer 4$1,414 NZD
Retailer 12$1,419 NZD
Retailer 10$1,641 NZD
Retailer 9$2,069 NZD
Brilliant Earth$2,945 NZD

44 data points across 15 retailers

13 retailers$355 NZD to $2,945 NZD

A
Cheapest Retailer
-
$355 NZD
$200 USD
A
Retailer 2
-
$412 NZD
$232 USD
View
A
Retailer 3
-
$440 NZD
$248 USD
View
A
Retailer 4
-
$440 NZD
$248 USD
View
A
Retailer 5
-
$491 NZD
£218 GBP
View
B+
Retailer 6
-
$765 NZD
$431 USD
View
A
Retailer 7
-
$800 NZD
£355 GBP
View
A
Retailer 8
-
$875 NZD
$493 USD
View
A
Retailer 9
-
$896 NZD
$505 USD
View
B+
Retailer 10
-
$1,414 NZD
$797 USD
View
B+
Retailer 11
-
$1,419 NZD
$800 USD
View
B
Retailer 12
-
$2,069 NZD
£918 GBP
View
Most Expensive
B
Brilliant Earth
15705245A · Oct 31
$2,945 NZD
$1,660 USD
View
12 more retailers have this diamond
Prices start from $355 NZDSave up to $2,590 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
$355 NZD