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Marquise|Lab Grown|IGI

0.51ct H SI1 Marquise Lab Grown Diamond

VG • H/SI1 • IGI LG436072213

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436072213

Diamond specifications and retailer prices

From $541 NZD
$305 USD
As of November 2, 2026
Save $2,163 NZD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,704 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG436072213 or 436072213. Listed at 10 retailers as of October 29, 2026, with prices from $541 to $2,704, a $2,163 spread on the same certified stone. MOH London lists it at $2,704. 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
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle31.5°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436072213
Dimensions8.40 × 4.28 × 2.55 mm
L/W Ratio1.96
Girdle conditionFaceted
Culet sizePointed
Top View
8.40 mm4.28 mm0.51 ctH / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436072213
Side View
Table 63.0%Crown 31.5°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 59.6%

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: $2,704 NZD|Low: $520 NZD|High: $2,722 NZD|Avg: $1,227 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
October 30, 2026
Retailer 7$541 NZD
Retailer 2$603 NZD
Retailer 11$628 NZD
Retailer 8$671 NZD
Retailer 12$671 NZD
Retailer 3$949 NZD
Retailer 10$1,095 NZD
Retailer 5$1,228 NZD
Retailer 4$1,320 NZD
Retailer 6$2,064 NZD
Retailer 9$2,158 NZD
MOH London$2,704 NZD

22 data points across 12 retailers

10 retailers$541 NZD to $2,704 NZD

A
Cheapest Retailer
-
$541 NZD
$305 USD
B+
Retailer 2
-
$603 NZD
$340 USD
View
B+
Retailer 3
-
$628 NZD
$354 USD
View
Retailer 4
-
$671 NZD
$378 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$671 NZD
$378 USD
View
B
Retailer 6
-
$1,095 NZD
$617 USD
View
Retailer 7
-
$1,228 NZD
€659 EUR
View
Price last confirmed 8 days ago
B
Retailer 8
-
$2,064 NZD
$1,163 USD
View
B
Retailer 9
-
$2,158 NZD
$1,216 USD
View
Most Expensive
B
MOH London
LG436072213 · Oct 29
$2,704 NZD
£1,200 GBP
View
9 more retailers have this diamond
Prices start from $541 NZDSave up to $2,163 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
$541 NZD