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Marquise|Lab Grown|IGI

1.55ct I SI1 Marquise Lab Grown Diamond

ID • I/SI1 • IGI LG436046738

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436046738

Diamond specifications and retailer prices

From €829 EUR
$930 USD
As of November 2, 2026
Save €3,617 EUR (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €4,447 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 1.55ct lab-grown marquise diamond

This 1.55ct lab-grown marquise sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436046738 or 436046738. Listed at 12 retailers as of November 1, 2026, with prices from €829 to €4,447, a €3,617 spread on the same certified stone. MOH London lists it at €4,447. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.55
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436046738
Dimensions11.23 × 6.17 × 3.90 mm
L/W Ratio1.82
Girdle conditionFaceted
Culet sizePointed
Cert comments
undefined
Top View
11.23 mm6.17 mm1.55 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436046738
Side View
Table 58.5%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.2%

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: €4,447 EUR|Low: €829 EUR|High: €4,500 EUR|Avg: €2,066 EUR
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 2, 2026
Retailer 8€829 EUR
Retailer 9€1,193 EUR
Retailer 13€1,298 EUR
Retailer 15€1,336 EUR
Retailer 10€1,384 EUR
Retailer 14€1,384 EUR
Retailer 3€1,538 EUR
Retailer 7€1,740 EUR
Retailer 5€1,902 EUR
Retailer 2€1,976 EUR
Retailer 11€2,187 EUR
Retailer 4€2,579 EUR
Retailer 12€2,594 EUR
Retailer 6€3,962 EUR
MOH London€4,447 EUR

39 data points across 15 retailers

12 retailers€829 EUR to €4,447 EUR

A
Cheapest Retailer
-
€829 EUR
$930 USD
B+
Retailer 2
-
€1,193 EUR
$1,338 USD
View
B+
Retailer 3
-
€1,298 EUR
$1,456 USD
View
B+
Retailer 4
-
€1,336 EUR
$1,498 USD
View
Final sale: no returns
Retailer 5
-
€1,384 EUR
$1,552 USD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
€1,384 EUR
$1,552 USD
View
B+
Retailer 7
-
€1,538 EUR
$1,725 USD
View
B
Retailer 8
-
€1,976 EUR
£1,745 GBP
View
B
Retailer 9
-
€2,187 EUR
$2,453 USD
View
B
Retailer 10
-
€2,579 EUR
$2,893 USD
View
B
Retailer 11
-
€2,594 EUR
$2,909 USD
View
Most Expensive
B
MOH London
LG436046738 · Nov 1
€4,447 EUR
£3,927 GBP
View
11 more retailers have this diamond
Prices start from €829 EURSave up to €3,617 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
1.55ct Marquise
€829 EUR