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Marquise|Lab Grown|IGI

0.55ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG826605597

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG826605597

Diamond specifications and retailer prices

From $90 USD
As of October 30, 2026
Save $736 USD (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $826 USD at MOH London · As of October 29, 2026
View at MOH London

About this 0.55ct lab-grown marquise diamond

This 0.55ct lab-grown marquise sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG826605597 or 826605597. Listed at 14 retailers as of October 29, 2026, with prices from $90 to $826, a $736 spread on the same certified stone. MOH London lists it at $826. 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

0.55
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle41.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG826605597
Dimensions9.60 × 3.87 × 2.60 mm
L/W Ratio2.48
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.60 mm3.87 mm0.55 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG826605597
Side View
Table 62.0%Crown 36.2°Girdle: STK-THKPavilion 41.8°Culet: NoneDepth 67.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $826 USD|Low: $71 USD|High: $831 USD|Avg: $249 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
Retailer 13
Retailer 14
October 30, 2026
Retailer 11$90 USD
Retailer 6$101 USD
Retailer 14$105 USD
Retailer 3$119 USD
Retailer 12$119 USD
Retailer 5$152 USD
Retailer 9$165 USD
Retailer 2$208 USD
Retailer 8$210 USD
Retailer 7$270 USD
Retailer 4$346 USD
Retailer 13$359 USD
Retailer 10$400 USD
MOH London$826 USD

45 data points across 14 retailers

14 retailers$90 USD to $826 USD

A
Cheapest Retailer
-
$90 USD
A
Retailer 2
-
$101 USD
View
Final sale: no returns
A
Retailer 3
-
$105 USD
View
A
Retailer 4
-
$119 USD
View
A
Retailer 5
-
$119 USD
View
B+
Retailer 6
-
$152 USD
View
A
Retailer 7
-
$165 USD
View
A
Retailer 8
-
$208 USD
£163 GBP
View
A
Retailer 9
-
$210 USD
€200 EUR
View
B+
Retailer 10
-
$270 USD
£212 GBP
View
B
Retailer 11
-
$346 USD
View
B+
Retailer 12
-
$359 USD
View
B
Retailer 13
-
$400 USD
View
Most Expensive
B
MOH London
LG826605597 · Oct 29
$826 USD
£650 GBP
View
13 more retailers have this diamond
Prices start from $90 USDSave up to $736 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
0.55ct Marquise
$90 USD