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Marquise|Lab Grown|IGI

1.28ct D SI1 Marquise Lab Grown Diamond

VG • D/SI1 • IGI LG843658870

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843658870

Diamond specifications and retailer prices

From €222 EUR
£195 GBP
As of November 1, 2026
Save €645 EUR (74%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €867 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 1.28ct lab-grown marquise diamond

This 1.28ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG843658870 or 843658870. Listed at 7 retailers as of November 1, 2026, with prices from €222 to €867, a €645 spread on the same certified stone. MOH London lists it at €867. 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

1.28
Carat
D
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843658870
Dimensions11.23 × 5.69 × 3.53 mm
L/W Ratio1.97
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.23 mm5.69 mm1.28 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843658870
Side View
Table 59.0%Crown 35.2°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.0%

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: €867 EUR|Low: €222 EUR|High: €1,146 EUR|Avg: €541 EUR|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 2€222 EUR
Retailer 3€330 EUR
Retailer 6€334 EUR
Retailer 7€431 EUR
Retailer 5€630 EUR
Retailer 4€806 EUR
MOH London€867 EUR

11 data points across 7 retailers

7 retailers€222 EUR to €867 EUR

A
Cheapest Retailer
-
€222 EUR
£195 GBP
A
Retailer 2
-
€330 EUR
£290 GBP
View
B+
Retailer 3
-
€334 EUR
$373 USD
View
B+
Retailer 4
-
€431 EUR
$481 USD
View
B
Retailer 5
-
€630 EUR
$704 USD
View
B
Retailer 6
-
€806 EUR
$900 USD
View
Most Expensive
B
MOH London
LG843658870 · Nov 1
€867 EUR
£763 GBP
View
6 more retailers have this diamond
Prices start from €222 EURSave up to €645 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
1.28ct Marquise
€222 EUR