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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 $305 USD
As of November 2, 2026
Save $1,219 USD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,524 USD 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 $305 to $1,524, a $1,219 spread on the same certified stone. MOH London lists it at $1,524. 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
Color
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: $1,524 USD|Low: $293 USD|High: $1,534 USD|Avg: $692 USD|+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$305 USD
Retailer 2$340 USD
Retailer 11$354 USD
Retailer 8$378 USD
Retailer 12$378 USD
Retailer 3$535 USD
Retailer 10$617 USD
Retailer 5$692 USD
Retailer 4$744 USD
Retailer 6$1,163 USD
Retailer 9$1,216 USD
MOH London$1,524 USD

22 data points across 12 retailers

10 retailers$305 USD to $1,524 USD

A
Cheapest Retailer
-
$305 USD
B+
Retailer 2
-
$340 USD
View
B+
Retailer 3
-
$354 USD
View
Retailer 4
-
$378 USD
View
Price last confirmed 7 days ago
B+
Retailer 5
-
$378 USD
View
B
Retailer 6
-
$617 USD
View
Retailer 7
-
$692 USD
€659 EUR
View
Price last confirmed 7 days ago
B
Retailer 8
-
$1,163 USD
View
B
Retailer 9
-
$1,216 USD
View
Most Expensive
B
MOH London
LG436072213 · Oct 29
$1,524 USD
£1,200 GBP
View
9 more retailers have this diamond
Prices start from $305 USDSave up to $1,219 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
0.51ct Marquise
$305 USD