CaratHunter
Plans
Marquise|Lab Grown|IGI

0.51ct G VS1 Marquise Lab Grown Diamond

VG • G/VS1 • IGI LG823640318

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG823640318

Diamond specifications and retailer prices

From $314 AUD
As of November 1, 2026
Save $1,371 AUD (81%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,685 AUD at MOH London · As of November 5, 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 G colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG823640318 or 823640318. Listed at 7 retailers as of November 1, 2026, with prices from $314 to $1,685, a $1,371 spread on the same certified stone. MOH London lists it at $1,685. 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
G
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823640318
Dimensions8.21 × 4.28 × 2.54 mm
L/W Ratio1.92
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.21 mm4.28 mm0.51 ctG / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823640318
Side View
Table 64.0%Crown 38.9°Girdle: MED-STKPavilion 38.9°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 1
Current: $1,685 AUD|Low: $314 AUD|High: $1,709 AUD|Avg: $648 AUD|+1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 4$314 AUD
Retailer 7$396 AUD
Retailer 2$406 AUD
Retailer 3$489 AUD
Retailer 6$530 AUD
Retailer 5$733 AUD
MOH London$1,685 AUD

32 data points across 7 retailers

7 retailers$314 AUD to $1,685 AUD

A
Cheapest Retailer
-
$314 AUD
B+
Retailer 2
-
$396 AUD
View
B+
Retailer 3
-
$406 AUD
View
B+
Retailer 4
-
$489 AUD
View
B+
Retailer 5
-
$530 AUD
View
B
Retailer 6
-
$733 AUD
View
Most Expensive
B
MOH London
LG823640318 · Nov 5
$1,685 AUD
£929 GBP
View
6 more retailers have this diamond
Prices start from $314 AUDSave up to $1,371 AUD

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
$314 AUD