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Marquise|Lab Grown|IGI

1.21ct D VS1 Marquise Lab Grown Diamond

EX • D/VS1 • IGI LG825605300

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG825605300

Diamond specifications and retailer prices

From £258 GBP
As of November 4, 2026
Save £1,098 GBP (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,356 GBP at Do Amore Diamonds · As of November 4, 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 D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG825605300 or 825605300. Listed at 15 retailers as of November 4, 2026, with prices from £258 to £1,356, a £1,098 spread on the same certified stone. Do Amore Diamonds lists it at £1,356. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825605300
Dimensions10.77 × 5.56 × 3.58 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
10.77 mm5.56 mm1.21 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825605300
Side View
Table 58.0%Crown 35.1°Girdle: MED-STKPavilion 41°Culet: NoneDepth 64.4%

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 4
Current: £1,356 GBP|Low: £179 GBP|High: £1,356 GBP|Avg: £495 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
November 4, 2026
Retailer 4£181 GBP
Retailer 2£258 GBP
Retailer 13£265 GBP
Retailer 12£273 GBP
Retailer 11£307 GBP
Retailer 7£473 GBP
Retailer 10£526 GBP
Retailer 3£548 GBP
Retailer 9£566 GBP
Retailer 5£598 GBP
Retailer 6£641 GBP
Retailer 8£776 GBP
Retailer 14£779 GBP
Do Amore Diamonds£1,356 GBP

36 data points across 14 retailers

15 retailers£258 GBP to £1,356 GBP

Retailer 1
-
£156 GBP
Price last confirmed 16 days ago
Retailer 2
-
£181 GBP
View
Price last confirmed 14 days ago
A
Retailer 3
-
£258 GBP
View
A
Retailer 4
-
£265 GBP
View
A
Retailer 5
-
£273 GBP
View
A
Retailer 6
-
£307 GBP
View
B+
Retailer 7
-
£473 GBP
View
B+
Retailer 8
-
£526 GBP
View
Retailer 9
-
£548 GBP
View
Price last confirmed 14 days ago
B+
Retailer 10
-
£566 GBP
View
Retailer 11
-
£598 GBP
View
Price last confirmed 26 days ago
Retailer 12
-
£622 GBP
View
Price last confirmed 16 days ago
B
Retailer 13
-
£776 GBP
View
B
Retailer 14
-
£779 GBP
View
Most Expensive
B
Do Amore Diamonds
27-9B054F409 · Nov 4
£1,356 GBP
$1,830 USD
View
14 more retailers have this diamond
Prices start from £258 GBPSave up to £1,098 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
£258 GBP