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Marquise|Lab Grown|IGI

1.21ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG664410393

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG664410393

Diamond specifications and retailer prices

From £230 GBP
As of November 6, 2026
Save £895 GBP (80%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,823 GBP at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG664410393 or 664410393. Listed at 21 retailers as of November 5, 2026, with a 389% 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG664410393
Dimensions10.77 × 5.60 × 3.53 mm
L/W Ratio1.92
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.77 mm5.60 mm1.21 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG664410393
Side View
Table 59.0%Crown 34.8°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 63.0%

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 6
Current: £1,823 GBP|Low: £188 GBP|High: £1,823 GBP|Avg: £652 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
Retailer 14
Retailer 15
Retailer 16
November 7, 2026
Retailer 6£230 GBP
Retailer 14£268 GBP
Retailer 4£374 GBP
Retailer 16£421 GBP
Retailer 9£477 GBP
Retailer 2£495 GBP
Retailer 15£516 GBP
Retailer 12£577 GBP
Retailer 11£692 GBP
Retailer 8£736 GBP
Retailer 13£784 GBP
Retailer 5£1,027 GBP
Retailer 7£1,055 GBP
Retailer 3£1,068 GBP
Retailer 10£1,125 GBP
Do Amore Diamonds£1,823 GBP

44 data points across 16 retailers

21 retailers£230 GBP to £1,125 GBP

Retailer 1
-
£169 GBP
Price last confirmed 30 days ago
Retailer 2
-
£196 GBP
View
Price last confirmed 23 days ago
Retailer 3
-
£209 GBP
View
Price last confirmed 26 days ago
Retailer 4
-
£209 GBP
View
Price last confirmed 35 days ago
A
Retailer 5
-
£230 GBP
View
Final sale: no returns
A
Retailer 6
-
£268 GBP
View
A
Retailer 7
-
£374 GBP
View
B+
Retailer 8
-
£421 GBP
View
B+
Retailer 9
-
£477 GBP
View
B+
Retailer 10
-
£495 GBP
View
B+
Retailer 11
-
£516 GBP
View
Retailer 12
-
£577 GBP
View
Price last confirmed 10 days ago
B
Retailer 13
-
£692 GBP
View
B
Retailer 14
-
£736 GBP
View
Retailer 15
-
£742 GBP
View
Price last confirmed 38 days ago
B
Retailer 16
-
£784 GBP
View
B
Retailer 17
-
£1,027 GBP
View
B
Retailer 18
-
£1,055 GBP
View
B
Retailer 19
-
£1,068 GBP
View
B
Retailer 20
-
£1,125 GBP
View
Most Expensive
Do Amore Diamonds
27-9567E5BB6 · Nov 6
£1,823 GBP
$2,440 USD
View
Price under review
20 more retailers have this diamond
Prices start from £230 GBPSave up to £895 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
1.21ct Marquise
£230 GBP