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Marquise|Lab Grown|IGI

0.51ct I SI1 Marquise Lab Grown Diamond

VG • I/SI1 • IGI LG414082005

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG414082005

Diamond specifications and retailer prices

From $487 NZD
$274 USD
As of November 2, 2026
Save $1,949 NZD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,435 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 0.51ct lab-grown marquise diamond

This 0.51ct lab-grown marquise sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG414082005 or 414082005. Listed at 11 retailers as of October 29, 2026, with prices from $487 to $2,435, a $1,949 spread on the same certified stone. MOH London lists it at $2,435. 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
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle33.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG414082005
Dimensions8.50 × 4.28 × 2.54 mm
L/W Ratio1.99
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
8.50 mm4.28 mm0.51 ctI / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG414082005
Side View
Table 57.5%Crown 33.1°Girdle: THN-MEDPavilion 40.2°Culet: NoneDepth 59.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $2,435 NZD|Low: $467 NZD|High: $2,454 NZD|Avg: $1,179 NZD|+0.5%
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
October 30, 2026
Retailer 9$487 NZD
Retailer 3$546 NZD
Retailer 13$565 NZD
Retailer 2$569 NZD
Retailer 10$604 NZD
Retailer 14$604 NZD
Retailer 4$889 NZD
Retailer 12$1,002 NZD
Retailer 7$1,123 NZD
Retailer 5$1,232 NZD
Retailer 8$1,857 NZD
Retailer 11$1,944 NZD
Retailer 6$2,431 NZD
MOH London$2,435 NZD

22 data points across 14 retailers

11 retailers$487 NZD to $2,435 NZD

A
Cheapest Retailer
-
$487 NZD
$274 USD
B+
Retailer 2
-
$546 NZD
$307 USD
View
Final sale: no returns
B+
Retailer 3
-
$565 NZD
$318 USD
View
B+
Retailer 4
-
$569 NZD
$320 USD
View
Retailer 5
-
$604 NZD
$340 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$604 NZD
$340 USD
View
B
Retailer 7
-
$1,002 NZD
$564 USD
View
Retailer 8
-
$1,123 NZD
€602 EUR
View
Price last confirmed 8 days ago
B
Retailer 9
-
$1,857 NZD
$1,045 USD
View
C
Retailer 10
-
$1,944 NZD
$1,094 USD
View
Most Expensive
B
MOH London
LG414082005 · Oct 29
$2,435 NZD
£1,079 GBP
View
10 more retailers have this diamond
Prices start from $487 NZDSave up to $1,949 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 Marquise
$487 NZD