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Oval|Lab Grown|IGI

0.51ct D SI1 Oval Lab Grown Diamond

VG • D/SI1 • IGI LG407936480

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG407936480

Diamond specifications and retailer prices

From $662 NZD
As of November 5, 2026
Save $803 NZD (55%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,196 NZD at MOH London · As of November 5, 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 very-good cut grade and certified by IGI LG407936480 or 407936480. Listed at 13 retailers as of November 5, 2026, with a 121% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle35.7°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407936480
Dimensions6.01 × 4.47 × 2.82 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by high pressure high temperature process (HPHT) Type II
Top View
6.01 mm4.47 mm0.51 ctD / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG407936480
Side View
Table 61.0%Crown 35.7°Girdle: THK-VTKPavilion 41.2°Culet: NoneDepth 63.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $3,196 NZD|Low: $635 NZD|High: $3,244 NZD|Avg: $1,329 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5$662 NZD
Retailer 6$704 NZD
Retailer 9$740 NZD
Retailer 7$821 NZD
Retailer 10$821 NZD
Retailer 8$1,310 NZD
Retailer 2$1,465 NZD
Retailer 3$1,465 NZD
Retailer 4$2,406 NZD
MOH London$3,196 NZD

46 data points across 10 retailers

13 retailers$662 NZD to $1,465 NZD

B+
Cheapest Retailer
-
$662 NZD
B
Retailer 2
-
$704 NZD
View
B
Retailer 3
-
$740 NZD
View
Final sale: no returns
B
Retailer 4
-
$767 NZD
View
B
Retailer 5
-
$821 NZD
View
Retailer 6
-
$821 NZD
View
Price last confirmed 12 days ago
B
Retailer 7
-
$1,310 NZD
View
B
Retailer 8
-
$1,465 NZD
View
B
Retailer 9
-
$1,465 NZD
View
Retailer 10
-
$2,406 NZD
View
Price under review
Retailer 11
-
$2,637 NZD
View
Price under review
Retailer 12
-
$2,902 NZD
View
Price under review
Most Expensive
MOH London
LG407936480 · Nov 5
$3,196 NZD
£1,395 GBP
View
Price under review
12 more retailers have this diamond
Prices start from $662 NZDSave up to $803 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.

B+
0.51ct Oval
$662 NZD