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Marquise|Lab Grown|IGI

1.23ct D VS1 Marquise Lab Grown Diamond

ID • D/VS1 • IGI LG814623842

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG814623842

Diamond specifications and retailer prices

From £210 GBP
As of November 4, 2026
Save £1,457 GBP (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,667 GBP at Do Amore Diamonds · As of November 4, 2026
View at Do Amore 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 top-tier cut grade and certified by IGI LG814623842 or 814623842. Listed at 13 retailers as of November 4, 2026, with prices from £210 to £1,667, a £1,457 spread on the same certified stone. Do Amore Diamonds lists it at £1,667. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG814623842
Dimensions11.16 × 5.66 × 3.48 mm
L/W Ratio1.97
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.16 mm5.66 mm1.23 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG814623842
Side View
Table 60.0%Crown 34.1°Girdle: THN-MEDPavilion 40.4°Culet: NoneDepth 61.5%

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 4
Current: £1,667 GBP|Low: £210 GBP|High: £1,667 GBP|Avg: £640 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 4, 2026
Retailer 5£210 GBP
Retailer 3£284 GBP
Retailer 2£341 GBP
Retailer 13£352 GBP
Retailer 10£388 GBP
Retailer 6£447 GBP
Retailer 11£548 GBP
Retailer 7£630 GBP
Retailer 9£714 GBP
Retailer 4£948 GBP
Retailer 12£1,007 GBP
Retailer 8£1,028 GBP
Do Amore Diamonds£1,667 GBP

9 data points across 13 retailers

13 retailers£210 GBP to £1,667 GBP

A
Cheapest Retailer
-
£210 GBP
Final sale: no returns
A
Retailer 2
-
£284 GBP
View
A
Retailer 3
-
£341 GBP
View
A
Retailer 4
-
£352 GBP
View
A
Retailer 5
-
£388 GBP
View
B+
Retailer 6
-
£447 GBP
View
Retailer 7
-
£548 GBP
View
Price last confirmed 7 days ago
B
Retailer 8
-
£630 GBP
View
B
Retailer 9
-
£714 GBP
View
B
Retailer 10
-
£948 GBP
View
B
Retailer 11
-
£1,007 GBP
View
B
Retailer 12
-
£1,028 GBP
View
Most Expensive
B
Do Amore Diamonds
27-7389A6E4E · Nov 4
£1,667 GBP
$2,250 USD
View
12 more retailers have this diamond
Prices start from £210 GBPSave up to £1,457 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
£210 GBP