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Marquise|Lab Grown|IGI

1.21ct F VS2 Marquise Lab Grown Diamond

ID • F/VS2 • IGI LG508137777

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG508137777

Diamond specifications and retailer prices

From £716 GBP
As of November 6, 2026
Save £615 GBP (46%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,338 GBP at NZ Jewellers · As of November 6, 2026
View at NZ Jewellers

About this 1.21ct lab-grown marquise diamond

This 1.21ct lab-grown marquise sits in the classic one-carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG508137777 or 508137777. Listed at 13 retailers as of November 4, 2026, with a 86% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508137777
Dimensions10.64 × 5.57 × 3.55 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
10.64 mm5.57 mm1.21 ctF / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508137777
Side View
Table 60.0%Crown 36.1°Girdle: MediumPavilion 40.6°Culet: NoneDepth 63.7%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £2,338 GBP|Low: £688 GBP|High: £2,858 GBP|Avg: £1,393 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8£716 GBP
Retailer 12£780 GBP
Retailer 3£802 GBP
Retailer 10£832 GBP
Retailer 9£874 GBP
Retailer 7£964 GBP
Retailer 2£1,269 GBP
Retailer 11£1,331 GBP
Retailer 6£1,792 GBP
Retailer 4£2,300 GBP
NZ Jewellers£2,338 GBP
Retailer 5£2,812 GBP

44 data points across 12 retailers

13 retailers£716 GBP to £1,331 GBP

B+
Cheapest Retailer
-
£716 GBP
B
Retailer 2
-
£780 GBP
View
B
Retailer 3
-
£802 GBP
View
Final sale: no returns
B
Retailer 4
-
£832 GBP
View
Retailer 5
-
£832 GBP
View
Price last confirmed 20 days ago
B
Retailer 6
-
£874 GBP
View
B
Retailer 7
-
£964 GBP
View
B
Retailer 8
-
£1,269 GBP
View
B
Retailer 9
-
£1,331 GBP
View
Retailer 10
-
£1,792 GBP
View
Price under review
Retailer 11
-
£2,300 GBP
View
Price under review
Most Expensive
NZ Jewellers
7973ec25-051b-4975-a6ab-fbd18b0b3e4a · Nov 6
£2,338 GBP
$3,129 USD
View
Price under review
11 more retailers have this diamond
Prices start from £716 GBPSave up to £615 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+
1.21ct Marquise
£716 GBP