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Marquise|Lab Grown|IGI

1.55ct E VS1 Marquise Lab Grown Diamond

ID • E/VS1 • IGI LG818682574

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818682574

Diamond specifications and retailer prices

From £190 GBP
$255 USD
As of October 30, 2026
Save £772 GBP (80%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £963 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

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 E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818682574 or 818682574. Listed at 22 retailers as of October 30, 2026, with prices from £190 to £963, a £772 spread on the same certified stone. Brilliant Earth lists it at £963. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818682574
Dimensions12.04 × 6.09 × 3.80 mm
L/W Ratio1.98
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.04 mm6.09 mm1.55 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818682574
Side View
Table 60.0%Crown 35°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.4%

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: £963 GBP|Low: £184 GBP|High: £1,634 GBP|Avg: £569 GBP|-41.1%
Brilliant Earth
Retailer 2
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Retailer 21
October 31, 2026
Retailer 11£190 GBP
Retailer 12£212 GBP
Retailer 7£221 GBP
Retailer 4£236 GBP
Retailer 6£236 GBP
Retailer 15£277 GBP
Retailer 21£355 GBP
Retailer 19£394 GBP
Retailer 20£405 GBP
Retailer 8£407 GBP
Retailer 2£446 GBP
Retailer 18£490 GBP
Retailer 3£550 GBP
Retailer 13£602 GBP
Retailer 9£737 GBP
Retailer 16£742 GBP
Retailer 5£758 GBP
Retailer 14£759 GBP
Retailer 10£797 GBP
Retailer 17£951 GBP
Brilliant Earth£963 GBP

27 data points across 21 retailers

22 retailers£190 GBP to £963 GBP

A
Cheapest Retailer
-
£190 GBP
$255 USD
A
Retailer 2
-
£212 GBP
$284 USD
View
Final sale: no returns
A
Retailer 3
-
£221 GBP
$296 USD
View
A
Retailer 4
-
£236 GBP
$316 USD
View
A
Retailer 5
-
£236 GBP
$316 USD
View
A
Retailer 6
-
£277 GBP
View
A
Retailer 7
-
£355 GBP
$475 USD
View
A
Retailer 8
-
£394 GBP
$528 USD
View
A
Retailer 9
-
£405 GBP
ZAR 8,776 ZAR
View
A
Retailer 10
-
£407 GBP
$545 USD
View
A
Retailer 11
-
£446 GBP
View
A
Retailer 12
-
£490 GBP
$656 USD
View
B+
Retailer 13
-
£550 GBP
A$1,134 AUD
View
B+
Retailer 14
-
£602 GBP
$806 USD
View
B+
Retailer 15
-
£737 GBP
$987 USD
View
B+
Retailer 16
-
£742 GBP
A$1,529 AUD
View
B+
Retailer 17
-
£758 GBP
$1,016 USD
View
B+
Retailer 18
-
£759 GBP
SGD 1,375 SGD
View
B
Retailer 19
-
£797 GBP
$1,068 USD
View
B
Retailer 20
-
£928 GBP
$1,244 USD
View
B
Retailer 21
-
£951 GBP
View
Most Expensive
B
Brilliant Earth
21636411A · Oct 30
£963 GBP
$1,290 USD
View
21 more retailers have this diamond
Prices start from £190 GBPSave up to £772 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
1.55ct Marquise
£190 GBP