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Marquise|Lab Grown|IGI

1.65ct E VS1 Marquise Lab Grown Diamond

ID • E/VS1 • IGI LG831643841

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG831643841

Diamond specifications and retailer prices

From £193 GBP
$257 USD
As of October 23, 2026
Save £838 GBP (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,031 GBP at With Clarity · As of October 27, 2026
View at With Clarity

About this 1.65ct lab-grown marquise diamond

This 1.65ct 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 LG831643841 or 831643841. Listed at 14 retailers as of October 23, 2026, with prices from £193 to £1,031, a £838 spread on the same certified stone. With Clarity lists it at £1,031. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.65
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831643841
Dimensions12.53 × 6.23 × 3.77 mm
L/W Ratio2.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.53 mm6.23 mm1.65 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831643841
Side View
Table 63.0%Crown 34.5°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.5%

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 23
Current: £361 GBP|Low: £193 GBP|High: £1,121 GBP|Avg: £663 GBP|-3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
With Clarity
October 28, 2026
Retailer 10£193 GBP
Retailer 7£224 GBP
Retailer 3£295 GBP
Retailer 1£361 GBP
Retailer 5£396 GBP
Retailer 2£498 GBP
Retailer 6£564 GBP
Retailer 8£738 GBP
Retailer 12£771 GBP
Retailer 11£877 GBP
Retailer 9£967 GBP
Retailer 4£1,011 GBP
With Clarity£1,031 GBP

28 data points across 13 retailers

14 retailers£193 GBP to £1,031 GBP

A
Cheapest Retailer
-
£193 GBP
$257 USD
A
Retailer 2
-
£224 GBP
$298 USD
View
A
Retailer 3
-
£295 GBP
View
Price last confirmed 14 days ago
A
Retailer 4
-
£361 GBP
$480 USD
View
A
Retailer 5
-
£396 GBP
€501 EUR
View
A
Retailer 6
-
£498 GBP
$662 USD
View
B+
Retailer 7
-
£564 GBP
A$1,152 AUD
View
B+
Retailer 8
-
£583 GBP
$775 USD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
£738 GBP
$980 USD
View
B+
Retailer 10
-
£771 GBP
$1,025 USD
View
B+
Retailer 11
-
£877 GBP
$1,165 USD
View
B
Retailer 12
-
£967 GBP
View
Price last confirmed 8 days ago
B
Retailer 13
-
£1,011 GBP
SGD 1,815 SGD
View
Price last confirmed 16 days ago
Most Expensive
B
With Clarity
831643841 · Oct 27
£1,031 GBP
$1,370 USD
View
13 more retailers have this diamond
Prices start from £193 GBPSave up to £838 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
1.65ct Marquise
£193 GBP