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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 €272 EUR
$305 USD
As of November 2, 2026
Save €1,087 EUR (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €1,359 EUR 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 €272 to €1,359, a €1,087 spread on the same certified stone. MOH London lists it at €1,359. 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: €1,359 EUR|Low: €261 EUR|High: €1,368 EUR|Avg: €617 EUR|+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€272 EUR
Retailer 2€303 EUR
Retailer 11€316 EUR
Retailer 8€337 EUR
Retailer 12€337 EUR
Retailer 3€477 EUR
Retailer 10€550 EUR
Retailer 5€617 EUR
Retailer 4€663 EUR
Retailer 6€1,037 EUR
Retailer 9€1,084 EUR
MOH London€1,359 EUR

22 data points across 12 retailers

10 retailers€272 EUR to €1,359 EUR

A
Cheapest Retailer
-
€272 EUR
$305 USD
B+
Retailer 2
-
€303 EUR
$340 USD
View
B+
Retailer 3
-
€316 EUR
$354 USD
View
Retailer 4
-
€337 EUR
$378 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
€337 EUR
$378 USD
View
B
Retailer 6
-
€550 EUR
$617 USD
View
Retailer 7
-
€617 EUR
View
Price last confirmed 8 days ago
B
Retailer 8
-
€1,037 EUR
$1,163 USD
View
B
Retailer 9
-
€1,084 EUR
$1,216 USD
View
Most Expensive
B
MOH London
LG436072213 · Oct 29
€1,359 EUR
£1,200 GBP
View
9 more retailers have this diamond
Prices start from €272 EURSave up to €1,087 EUR

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
€272 EUR