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Marquise|Lab Grown|IGI

1.23ct D VS1 Marquise Lab Grown Diamond

VG • D/VS1 • IGI LG832603859

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG832603859

Diamond specifications and retailer prices

From £160 GBP
As of November 4, 2026
Save £708 GBP (82%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £868 GBP at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.23ct lab-grown marquise diamond

This 1.23ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG832603859 or 832603859. Listed at 21 retailers as of November 4, 2026, with prices from £160 to £868, a £708 spread on the same certified stone. Reve Diamonds lists it at £868. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.23
Carat
D
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.6°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG832603859
Dimensions11.62 × 5.53 × 3.34 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
11.62 mm5.53 mm1.23 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG832603859
Side View
Table 62.0%Crown 31.6°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 60.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £236 GBP|Low: £160 GBP|High: £873 GBP|Avg: £474 GBP|-1.5%
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
Retailer 15
Retailer 16
Reve Diamonds
November 4, 2026
Retailer 9£160 GBP
Retailer 8£199 GBP
Retailer 1£236 GBP
Retailer 4£303 GBP
Retailer 11£310 GBP
Retailer 12£320 GBP
Retailer 2£353 GBP
Retailer 3£437 GBP
Retailer 14£460 GBP
Retailer 5£544 GBP
Retailer 16£577 GBP
Retailer 13£578 GBP
Retailer 7£593 GBP
Retailer 15£599 GBP
Retailer 10£610 GBP
Retailer 6£842 GBP
Reve Diamonds£868 GBP

33 data points across 17 retailers

21 retailers£160 GBP to £868 GBP

Retailer 1
-
£144 GBP
Price last confirmed 18 days ago
A
Retailer 2
-
£160 GBP
View
Final sale: no returns
Retailer 3
-
£167 GBP
View
Price last confirmed 20 days ago
Retailer 4
-
£179 GBP
View
Price last confirmed 23 days ago
A
Retailer 5
-
£199 GBP
View
A
Retailer 6
-
£236 GBP
View
Retailer 7
-
£303 GBP
View
Price last confirmed 12 days ago
B+
Retailer 8
-
£310 GBP
View
A
Retailer 9
-
£320 GBP
View
Retailer 10
-
£353 GBP
View
Price last confirmed 8 days ago
Retailer 11
-
£437 GBP
View
Price last confirmed 8 days ago
B+
Retailer 12
-
£460 GBP
View
Retailer 13
-
£544 GBP
View
Price last confirmed 7 days ago
Retailer 14
-
£576 GBP
View
Price last confirmed 19 days ago
B+
Retailer 15
-
£577 GBP
View
B+
Retailer 16
-
£578 GBP
View
Retailer 17
-
£593 GBP
View
Price last confirmed 10 days ago
B
Retailer 18
-
£599 GBP
View
B
Retailer 19
-
£610 GBP
View
Retailer 20
-
£842 GBP
View
Price last confirmed 16 days ago
Most Expensive
B
Reve Diamonds
CFA639404 · Nov 4
£868 GBP
$1,172 USD
View
20 more retailers have this diamond
Prices start from £160 GBPSave up to £708 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
1.23ct Marquise
£160 GBP