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Marquise|Lab Grown|IGI

1.51ct D SI1 Marquise Lab Grown Diamond

VG • D/SI1 • IGI LG838632342

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG838632342

Diamond specifications and retailer prices

From $675 AUD
$473 USD
As of November 1, 2026
Save $925 AUD (58%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,600 AUD at MOH London · As of October 26, 2026
View at MOH London

About this 1.51ct lab-grown marquise diamond

This 1.51ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG838632342 or 838632342. Listed at 7 retailers as of October 26, 2026, with prices from $675 to $1,600, a $925 spread on the same certified stone. MOH London lists it at $1,600. 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

1.51
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838632342
Dimensions12.30 × 5.87 × 3.76 mm
L/W Ratio2.10
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.30 mm5.87 mm1.51 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838632342
Side View
Table 56.0%Crown 35.3°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 64.1%

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 1
Current: $1,600 AUD|Low: $648 AUD|High: $1,633 AUD|Avg: $1,072 AUD|-1.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 3$675 AUD
Retailer 6$715 AUD
Retailer 2$734 AUD
Retailer 5$866 AUD
Retailer 4$1,351 AUD
Retailer 7$1,527 AUD
MOH London$1,600 AUD

40 data points across 7 retailers

7 retailers$675 AUD to $1,600 AUD

A
Cheapest Retailer
-
$675 AUD
$473 USD
A
Retailer 2
-
$715 AUD
$501 USD
View
A
Retailer 3
-
$734 AUD
£405 GBP
View
B+
Retailer 4
-
$866 AUD
$607 USD
View
B
Retailer 5
-
$1,351 AUD
$947 USD
View
B
Retailer 6
-
$1,527 AUD
$1,070 USD
View
Most Expensive
B
MOH London
LG838632342 · Oct 26
$1,600 AUD
£883 GBP
View
6 more retailers have this diamond
Prices start from $675 AUDSave up to $925 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
1.51ct Marquise
$675 AUD