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Marquise|Lab Grown|IGI

1.20ct E VS1 Marquise Lab Grown Diamond

EX • E/VS1 • IGI LG818657945

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818657945

Diamond specifications and retailer prices

From £172 GBP
$231 USD
As of November 1, 2026
Save £736 GBP (81%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £908 GBP at Reve Diamonds · As of November 1, 2026
View at Reve Diamonds

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 LG818657945 or 818657945. Listed at 22 retailers as of November 1, 2026, with prices from £172 to £908, a £736 spread on the same certified stone. Reve Diamonds lists it at £908. 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 angle37.3°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818657945
Dimensions10.50 × 5.48 × 3.39 mm
L/W Ratio1.92
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.50 mm5.48 mm1.20 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818657945
Side View
Table 58.0%Crown 37.3°Girdle: THK-VTKPavilion 37.1°Culet: NoneDepth 61.9%

Caratlytics Score

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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: Nov 1
Current: £331 GBP|Low: £172 GBP|High: £778 GBP|Avg: £406 GBP|+2.7%
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
November 1, 2026
Retailer 3£172 GBP
Retailer 5£192 GBP
Retailer 4£260 GBP
Retailer 10£313 GBP
Retailer 1£331 GBP
Retailer 7£354 GBP
Retailer 8£402 GBP
Retailer 12£469 GBP
Retailer 13£470 GBP
Retailer 2£495 GBP
Retailer 9£537 GBP
Retailer 11£544 GBP
Retailer 6£769 GBP

42 data points across 13 retailers

22 retailers£172 GBP to £908 GBP

Retailer 1
-
£149 GBP
$199 USD
Price last confirmed 30 days ago
A
Retailer 2
-
£172 GBP
$231 USD
View
Final sale: no returns
Retailer 3
-
£180 GBP
$241 USD
View
Price last confirmed 34 days ago
Retailer 4
-
£192 GBP
$257 USD
View
Price last confirmed 29 days ago
A
Retailer 5
-
£220 GBP
HK$2,300 HKD
View
B+
Retailer 6
-
£260 GBP
$348 USD
View
A
Retailer 7
-
£313 GBP
€400 EUR
View
A
Retailer 8
-
£325 GBP
$435 USD
View
A
Retailer 9
-
£331 GBP
ZAR 7,171 ZAR
View
A
Retailer 10
-
£354 GBP
View
B+
Retailer 11
-
£402 GBP
A$828 AUD
View
B+
Retailer 12
-
£469 GBP
A$967 AUD
View
B+
Retailer 13
-
£470 GBP
$630 USD
View
B
Retailer 14
-
£495 GBP
$663 USD
View
B+
Retailer 15
-
£537 GBP
$720 USD
View
B+
Retailer 16
-
£544 GBP
A$1,122 AUD
View
Retailer 17
-
£617 GBP
$827 USD
View
Price last confirmed 32 days ago
B
Retailer 18
-
£625 GBP
SGD 1,131 SGD
View
B
Retailer 19
-
£655 GBP
$877 USD
View
B
Retailer 20
-
£657 GBP
$880 USD
View
B
Retailer 21
-
£769 GBP
View
Most Expensive
B
Reve Diamonds
02ACDE5D5 · Nov 1
£908 GBP
$1,217 USD
View
21 more retailers have this diamond
Prices start from £172 GBPSave up to £736 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
£172 GBP