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Oval|Lab Grown|IGI

0.51ct F SI1 Oval Lab Grown Diamond

VG • F/SI1 • IGI LG851653367

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG851653367

Diamond specifications and retailer prices

From $148 NZD
As of November 5, 2026
Save $1,199 NZD (89%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,347 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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG851653367 or 851653367. Listed at 9 retailers as of November 2, 2026, with prices from $148 to $1,347, a $1,199 spread on the same certified stone. MOH London lists it at $1,347. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle31.8°
Pavilion angle41.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851653367
Dimensions6.27 × 4.47 × 2.88 mm
L/W Ratio1.40
Girdle conditionFaceted
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
6.27 mm4.47 mm0.51 ctF / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG851653367
Side View
Table 57.0%Crown 31.8°Girdle: MED-STKPavilion 41.7°CuletDepth 64.4%

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 5
Current: $1,347 NZD|Low: $148 NZD|High: $1,347 NZD|Avg: $507 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7$148 NZD
Retailer 9$171 NZD
Retailer 3$195 NZD
Retailer 2$321 NZD
Retailer 6$400 NZD
Retailer 4$442 NZD
Retailer 8$590 NZD
Retailer 5$657 NZD
MOH London$1,347 NZD

5 data points across 9 retailers

9 retailers$148 NZD to $1,347 NZD

A
Cheapest Retailer
-
$148 NZD
B+
Retailer 2
-
$171 NZD
View
B+
Retailer 3
-
$195 NZD
View
A
Retailer 4
-
$321 NZD
View
B+
Retailer 5
-
$400 NZD
View
B+
Retailer 6
-
$442 NZD
View
B+
Retailer 7
-
$590 NZD
View
B+
Retailer 8
-
$657 NZD
View
Most Expensive
B
MOH London
LG851653367 · Nov 2
$1,347 NZD
£588 GBP
View
8 more retailers have this diamond
Prices start from $148 NZDSave up to $1,199 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
$148 NZD