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Marquise|Lab Grown|IGI

1.23ct E VS1 Marquise Lab Grown Diamond

EX • E/VS1 • IGI LG801643111

Certificate IGI LG801643111

Diamond specifications and retailer prices

From £520 GBP
$697 USD
As of October 31, 2026
Save £420 GBP (45%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £940 GBP at Jared · As of October 30, 2026
View at Jared

About this 1.23ct lab-grown marquise diamond

This 1.23ct 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 LG801643111 or 801643111. Listed at 4 retailers as of October 30, 2026, with prices from £520 to £940, a £420 spread on the same certified stone. Jared lists it at £940. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
E
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG801643111
Dimensions10.53 × 5.71 × 3.60 mm
L/W Ratio1.84
Top View
10.53 mm5.71 mm1.23 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801643111
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 63.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £940 GBP|Low: £520 GBP|High: £1,418 GBP|Avg: £791 GBP|-33.7%
Jared
Retailer 2
Retailer 3
Retailer 4
September 28, 2026
Retailer 2£520 GBP
Retailer 3£731 GBP
Retailer 4£731 GBP
Jared£940 GBP

2 data points across 4 retailers

4 retailers£520 GBP to £940 GBP

B+
Cheapest Retailer
-
£520 GBP
$697 USD
B
Retailer 2
-
£731 GBP
$980 USD
View
B
Retailer 3
-
£731 GBP
$980 USD
View
Most Expensive
B
Jared
159278235 · Oct 30
£940 GBP
$1,260 USD
View
3 more retailers have this diamond
Prices start from £520 GBPSave up to £420 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.

B+
1.23ct Marquise
£520 GBP