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Marquise|Lab Grown|IGI

5.51ct E VS1 Marquise Lab Grown Diamond

VG • E/VS1 • IGI LG849635665

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG849635665

Diamond specifications and retailer prices

From £1,235 GBP
As of October 26, 2026
Save £1,530 GBP (55%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,765 GBP at Taylor and Hart · As of October 26, 2026
View at Taylor and Hart

About this 5.51ct lab-grown marquise diamond

This 5.51ct lab-grown marquise sits in the over five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG849635665 or 849635665. Listed at 4 retailers as of October 26, 2026, with prices from £1,235 to £2,765, a £1,530 spread on the same certified stone. Taylor and Hart lists it at £2,765. 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

5.51
Carat
E
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG849635665
Dimensions18.29 × 9.05 × 5.80 mm
L/W Ratio2.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.29 mm9.05 mm5.51 ctE / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG849635665
Side View
Table 60.0%Crown 36.2°Girdle: STK-THKPavilion 40.6°Culet: NoneDepth 64.1%

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 26
Current: £1,932 GBP|Low: £1,126 GBP|High: £2,765 GBP|Avg: £1,731 GBP|-1.3%
Retailer 1
Retailer 2
Retailer 3
Taylor and Hart
October 26, 2026
Retailer 2£1,235 GBP
Retailer 3£1,405 GBP
Retailer 1£1,932 GBP
Taylor and Hart£2,765 GBP

4 data points across 4 retailers

4 retailers£1,235 GBP to £2,765 GBP

A
Cheapest Retailer
-
£1,235 GBP
Retailer 2
-
£1,405 GBP
$1,882 USD
View
Price last confirmed 9 days ago
B+
Retailer 3
-
£1,932 GBP
$2,588 USD
View
Most Expensive
B
Taylor and Hart
XI2WAYN · Oct 26
£2,765 GBP
$3,705 USD
View
3 more retailers have this diamond
Prices start from £1,235 GBPSave up to £1,530 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
5.51ct Marquise
£1,235 GBP