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Marquise|Lab Grown|IGI

1.21ct F VS1 Marquise Lab Grown Diamond

EX • F/VS1 • IGI LG836665908

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG836665908

Diamond specifications and retailer prices

From £169 GBP
As of November 6, 2026
Save £1,452 GBP (90%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,621 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 LG836665908 or 836665908. Listed at 11 retailers as of November 6, 2026, with prices from £169 to £1,621, a £1,452 spread on the same certified stone. Do Amore Diamonds lists it at £1,621. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836665908
Dimensions11.03 × 5.68 × 3.49 mm
L/W Ratio1.94
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.03 mm5.68 mm1.21 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836665908
Side View
Table 59.0%Crown 33.8°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.4%

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: £1,621 GBP|Low: £169 GBP|High: £1,621 GBP|Avg: £515 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
November 7, 2026
Retailer 8£169 GBP
Retailer 9£196 GBP
Retailer 3£209 GBP
Retailer 5£260 GBP
Retailer 10£275 GBP
Retailer 11£356 GBP
Retailer 4£418 GBP
Retailer 2£435 GBP
Retailer 7£743 GBP
Retailer 12£796 GBP
Retailer 6£870 GBP
Do Amore Diamonds£1,621 GBP

4 data points across 12 retailers

11 retailers£169 GBP to £1,621 GBP

A
Cheapest Retailer
-
£169 GBP
A
Retailer 2
-
£196 GBP
View
A
Retailer 3
-
£209 GBP
View
A
Retailer 4
-
£260 GBP
View
A
Retailer 5
-
£275 GBP
View
A
Retailer 6
-
£356 GBP
View
B+
Retailer 7
-
£435 GBP
View
B
Retailer 8
-
£743 GBP
View
B
Retailer 9
-
£796 GBP
View
B
Retailer 10
-
£870 GBP
View
Most Expensive
B
Do Amore Diamonds
27-194CB7F2B · Nov 6
£1,621 GBP
$2,170 USD
View
10 more retailers have this diamond
Prices start from £169 GBPSave up to £1,452 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
£169 GBP