CaratHunter
Plans
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 $473 USD
As of November 1, 2026
Save $642 USD (58%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,115 USD at MOH London · As of November 2, 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 November 1, 2026, with prices from $473 to $1,115, a $642 spread on the same certified stone. MOH London lists it at $1,115. 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
Color
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $1,115 USD|Low: $454 USD|High: $1,144 USD|Avg: $752 USD|-2.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 3$473 USD
Retailer 6$501 USD
Retailer 2$514 USD
Retailer 5$607 USD
Retailer 4$947 USD
Retailer 7$1,070 USD
MOH London$1,115 USD

40 data points across 7 retailers

7 retailers$473 USD to $1,115 USD

A
Cheapest Retailer
-
$473 USD
A
Retailer 2
-
$501 USD
View
A
Retailer 3
-
$514 USD
£405 GBP
View
B+
Retailer 4
-
$607 USD
View
B
Retailer 5
-
$947 USD
View
B
Retailer 6
-
$1,070 USD
View
Most Expensive
MOH London
LG838632342 · Nov 2
$1,115 USD
£878 GBP
View
6 more retailers have this diamond
Prices start from $473 USDSave up to $642 USD

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
$473 USD