Marquise|Lab Grown|IGI

1.27ct E VVS1 Marquise Lab Grown Diamond

EX • E/VVS1 • IGI LG818660603

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818660603

Diamond specifications and retailer prices

From £164 GBP
$220 USD
As of October 30, 2026
Save £774 GBP (82%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,179 GBP at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

About this 1.27ct lab-grown marquise diamond

This 1.27ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG818660603 or 818660603. Listed at 24 retailers as of October 30, 2026, with a 471% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.27
Carat
E
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818660603
Dimensions11.65 × 5.56 × 3.47 mm
L/W Ratio2.10
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.65 mm5.56 mm1.27 ctE / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818660603
Side View
Table 61.0%Crown 36.9°Girdle: STK-THKPavilion 39.4°Culet: NoneDepth 62.4%

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: Oct 30
Current: £421 GBP|Low: £157 GBP|High: £938 GBP|Avg: £432 GBP|+1.2%
Retailer 1
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Retailer 18
October 31, 2026
Retailer 6£164 GBP
Retailer 4£183 GBP
Retailer 9£190 GBP
Retailer 7£203 GBP
Retailer 10£203 GBP
Retailer 2£250 GBP
Retailer 11£275 GBP
Retailer 13£330 GBP
Retailer 15£349 GBP
Retailer 12£377 GBP
Retailer 1£421 GBP
Retailer 16£497 GBP
Retailer 3£529 GBP
Retailer 8£654 GBP
Retailer 18£664 GBP
Retailer 14£768 GBP
Retailer 17£816 GBP
Retailer 5£938 GBP

40 data points across 18 retailers

24 retailers£164 GBP to £938 GBP

A
Cheapest Retailer
-
£164 GBP
$220 USD
A
Retailer 2
-
£183 GBP
$245 USD
View
Final sale: no returns
A
Retailer 3
-
£190 GBP
$255 USD
View
A
Retailer 4
-
£203 GBP
$272 USD
View
A
Retailer 5
-
£203 GBP
$272 USD
View
Retailer 6
-
£250 GBP
View
Price last confirmed 14 days ago
B+
Retailer 7
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£275 GBP
$368 USD
View
A
Retailer 8
-
£330 GBP
€421 EUR
View
A
Retailer 9
-
£349 GBP
ZAR 7,563 ZAR
View
A
Retailer 10
-
£377 GBP
View
A
Retailer 11
-
£417 GBP
$559 USD
View
A
Retailer 12
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£421 GBP
A$868 AUD
View
B+
Retailer 13
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£455 GBP
$610 USD
View
B+
Retailer 14
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£497 GBP
A$1,025 AUD
View
B+
Retailer 15
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£529 GBP
$709 USD
View
B+
Retailer 16
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£654 GBP
$876 USD
View
B+
Retailer 17
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£664 GBP
$890 USD
View
B+
Retailer 18
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£693 GBP
$929 USD
View
B+
Retailer 19
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£699 GBP
$937 USD
View
B
Retailer 20
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£768 GBP
A$1,584 AUD
View
B
Retailer 21
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£796 GBP
View
B
Retailer 22
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£816 GBP
View
B
Retailer 23
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£938 GBP
$1,257 USD
View
Most Expensive
Brilliant Earth
20905909A · Sep 28
£1,179 GBP
$1,580 USD
View
Price last confirmed 32 days ago
23 more retailers have this diamond
Prices start from £164 GBPSave up to £774 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
1.27ct Marquise
£164 GBP