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Marquise|Lab Grown|IGI

1.23ct D VS1 Marquise Lab Grown Diamond

VG • D/VS1 • IGI LG753506828

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG753506828

Diamond specifications and retailer prices

From £311 GBP
As of November 3, 2026
Save £1,249 GBP (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,560 GBP at MOH London · As of November 1, 2026
View at MOH London

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 LG753506828 or 753506828. Listed at 12 retailers as of November 1, 2026, with prices from £311 to £1,560, a £1,249 spread on the same certified stone. MOH London lists it at £1,560. 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 angle37.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG753506828
Dimensions10.74 × 5.61 × 3.56 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.74 mm5.61 mm1.23 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG753506828
Side View
Table 61.0%Crown 37.1°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 63.5%

Caratlytics Score

How it works →
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 3
Current: £1,560 GBP|Low: £273 GBP|High: £2,756 GBP|Avg: £998 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 4, 2026
Retailer 10£311 GBP
Retailer 11£347 GBP
Retailer 2£565 GBP
Retailer 5£604 GBP
Retailer 3£607 GBP
Retailer 4£696 GBP
Retailer 6£1,079 GBP
Retailer 8£1,393 GBP
Retailer 9£1,473 GBP
MOH London£1,560 GBP
Retailer 7£2,756 GBP

29 data points across 11 retailers

12 retailers£311 GBP to £1,560 GBP

A
Cheapest Retailer
-
£311 GBP
A
Retailer 2
-
£347 GBP
View
Final sale: no returns
B+
Retailer 3
-
£565 GBP
View
Retailer 4
-
£570 GBP
View
Price last confirmed 28 days ago
Retailer 5
-
£604 GBP
View
Price last confirmed 7 days ago
B
Retailer 6
-
£607 GBP
View
B
Retailer 7
-
£696 GBP
View
B
Retailer 8
-
£1,079 GBP
View
B
Retailer 9
-
£1,393 GBP
View
B
Retailer 10
-
£1,473 GBP
View
Most Expensive
B
MOH London
LG753506828 · Nov 1
£1,560 GBP
View
10 more retailers have this diamond
Prices start from £311 GBPSave up to £1,249 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
£311 GBP