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Oval|Lab Grown|IGI

0.51ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG735508929

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG735508929

Diamond specifications and retailer prices

From $150 NZD
As of November 1, 2026
Save $1,209 NZD (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,359 NZD at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct lab-grown oval diamond

This 0.51ct lab-grown oval sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG735508929 or 735508929. Listed at 15 retailers as of November 1, 2026, with prices from $150 to $1,359, a $1,209 spread on the same certified stone. MOH London lists it at $1,359. 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

0.51
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle31.3°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG735508929
Dimensions6.50 × 4.42 × 2.79 mm
L/W Ratio1.47
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
6.50 mm4.42 mm0.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG735508929
Side View
Table 59.0%Crown 31.3°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.1%

Caratlytics Score

How it works →
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: $1,359 NZD|Low: $123 NZD|High: $1,432 NZD|Avg: $411 NZD|-5.1%
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 2, 2026
Retailer 12$150 NZD
Retailer 10$166 NZD
Retailer 5$173 NZD
Retailer 13$197 NZD
Retailer 6$202 NZD
Retailer 15$307 NZD
Retailer 8$327 NZD
Retailer 9$359 NZD
Retailer 4$400 NZD
Retailer 2$404 NZD
Retailer 11$446 NZD
Retailer 7$505 NZD
Retailer 3$593 NZD
Retailer 14$606 NZD
MOH London$1,359 NZD

37 data points across 15 retailers

15 retailers$150 NZD to $1,359 NZD

A
Cheapest Retailer
-
$150 NZD
A
Retailer 2
-
$166 NZD
View
Final sale: no returns
A
Retailer 3
-
$173 NZD
View
A
Retailer 4
-
$197 NZD
View
Retailer 5
-
$202 NZD
View
Price last confirmed 12 days ago
A
Retailer 6
-
$307 NZD
View
A
Retailer 7
-
$327 NZD
View
A
Retailer 8
-
$359 NZD
View
A
Retailer 9
-
$400 NZD
View
A
Retailer 10
-
$404 NZD
View
A
Retailer 11
-
$446 NZD
View
B+
Retailer 12
-
$505 NZD
View
B+
Retailer 13
-
$593 NZD
View
B+
Retailer 14
-
$606 NZD
View
Most Expensive
B
MOH London
LG735508929 · Nov 2
$1,359 NZD
£593 GBP
View
14 more retailers have this diamond
Prices start from $150 NZDSave up to $1,209 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
0.51ct Oval
$150 NZD