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Marquise|Lab Grown|IGI

5.50ct E VS1 Marquise Lab Grown Diamond

ID • E/VS1 • IGI LG830675873

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG830675873

Diamond specifications and retailer prices

From £1,146 GBP
$1,535 USD
As of October 30, 2026
Save £3,653 GBP (76%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,799 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 5.5ct lab-grown marquise diamond

This 5.5ct lab-grown marquise sits in the over five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG830675873 or 830675873. Listed at 10 retailers as of October 30, 2026, with prices from £1,146 to £4,799, a £3,653 spread on the same certified stone. Brilliant Earth lists it at £4,799. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.50
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830675873
Dimensions18.78 × 9.19 × 5.49 mm
L/W Ratio2.04
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.78 mm9.19 mm5.50 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830675873
Side View
Table 57.0%Crown 30°Girdle: STK-THKPavilion 38.2°Culet: NoneDepth 59.7%

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: Oct 30
Current: £4,799 GBP|Low: £1,146 GBP|High: £4,799 GBP|Avg: £2,618 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 3£1,146 GBP
Retailer 2£1,259 GBP
Retailer 5£1,358 GBP
Retailer 4£1,932 GBP
Retailer 6£2,785 GBP
Retailer 8£2,841 GBP
Retailer 10£3,250 GBP
Retailer 7£3,841 GBP
Retailer 9£4,213 GBP
Brilliant Earth£4,799 GBP

42 data points across 10 retailers

10 retailers£1,146 GBP to £4,799 GBP

B+
Cheapest Retailer
-
£1,146 GBP
$1,535 USD
A
Retailer 2
-
£1,259 GBP
View
A
Retailer 3
-
£1,358 GBP
€1,733 EUR
View
B+
Retailer 4
-
£1,932 GBP
$2,588 USD
View
B+
Retailer 5
-
£2,785 GBP
View
B
Retailer 6
-
£2,841 GBP
$3,807 USD
View
Retailer 7
-
£3,250 GBP
A$6,699 AUD
View
Price last confirmed 23 days ago
B
Retailer 8
-
£3,841 GBP
$5,146 USD
View
B
Retailer 9
-
£4,213 GBP
$5,645 USD
View
Most Expensive
B
Brilliant Earth
22199715A · Oct 31
£4,799 GBP
$6,430 USD
View
9 more retailers have this diamond
Prices start from £1,146 GBPSave up to £3,653 GBP

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
5.50ct Marquise
£1,146 GBP