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Marquise|Lab Grown|IGI

1.20ct E VS1 Marquise Lab Grown Diamond

EX • E/VS1 • IGI LG784606281

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG784606281

Diamond specifications and retailer prices

From £182 GBP
$244 USD
As of November 1, 2026
Save £858 GBP (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,041 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 1.2ct lab-grown marquise diamond

This 1.2ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG784606281 or 784606281. Listed at 12 retailers as of October 31, 2026, with prices from £182 to £1,041, a £858 spread on the same certified stone. Taylor and Hart lists it at £1,041. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
E
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784606281
Dimensions10.83 × 5.62 × 3.45 mm
L/W Ratio1.93
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.83 mm5.62 mm1.20 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784606281
Side View
Table 61.0%Crown 35.1°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.4%

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 1
Current: £349 GBP|Low: £182 GBP|High: £1,041 GBP|Avg: £523 GBP|+17.0%
Retailer 1
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
Taylor and Hart
November 1, 2026
Retailer 14£182 GBP
Retailer 2£328 GBP
Retailer 13£346 GBP
Retailer 1£349 GBP
Retailer 11£368 GBP
Retailer 8£375 GBP
Retailer 5£375 GBP
Retailer 3£406 GBP
Retailer 6£476 GBP
Retailer 10£494 GBP
Retailer 12£652 GBP
Retailer 9£709 GBP
Retailer 7£809 GBP
Retailer 4£858 GBP
Taylor and Hart£1,041 GBP

38 data points across 15 retailers

12 retailers£182 GBP to £1,041 GBP

A
Cheapest Retailer
-
£182 GBP
$244 USD
Final sale: no returns
A
Retailer 2
-
£328 GBP
$439 USD
View
A
Retailer 3
-
£346 GBP
$464 USD
View
A
Retailer 4
-
£349 GBP
ZAR 7,548 ZAR
View
A
Retailer 5
-
£363 GBP
View
Retailer 6
-
£368 GBP
€469 EUR
View
Price last confirmed 7 days ago
A
Retailer 7
-
£375 GBP
View
B+
Retailer 8
-
£494 GBP
A$1,018 AUD
View
B
Retailer 9
-
£652 GBP
$873 USD
View
B
Retailer 10
-
£709 GBP
$950 USD
View
B
Retailer 11
-
£809 GBP
View
Most Expensive
B
Taylor and Hart
OWG9QD9 · Oct 31
£1,041 GBP
$1,394 USD
View
11 more retailers have this diamond
Prices start from £182 GBPSave up to £858 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
1.20ct Marquise
£182 GBP