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Princess|Lab Grown|IGI

1.20ct F VS1 Princess Lab Grown Diamond

ID • F/VS1 • IGI LG591349012

Shape and cutting style on the report: Princess cut

Certificate IGI LG591349012

Diamond specifications and retailer prices

From £141 GBP
As of November 4, 2026
Save £1,211 GBP (90%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,352 GBP at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.2ct lab-grown princess diamond

This 1.2ct lab-grown princess 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 LG591349012 or 591349012. Listed at 11 retailers as of November 2, 2026, with prices from £141 to £1,352, a £1,211 spread on the same certified stone. Do Amore Diamonds lists it at £1,352. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.2°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591349012
Dimensions5.91 × 5.83 × 4.12 mm
L/W Ratio1.01
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
5.91 mm5.83 mm1.20 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591349012
Side View
Table 71.0%Crown 42.2°Girdle: MediumPavilion 38.2°Culet: NoneDepth 70.7%

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: £1,352 GBP|Low: £141 GBP|High: £1,397 GBP|Avg: £524 GBP|-3.2%
Do Amore Diamonds
Retailer 2
Retailer 3
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Retailer 12
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Retailer 16
November 2, 2026
Retailer 13£141 GBP
Retailer 11£163 GBP
Retailer 5£280 GBP
Retailer 4£296 GBP
Retailer 14£307 GBP
Retailer 2£312 GBP
Retailer 6£322 GBP
Retailer 7£377 GBP
Retailer 10£470 GBP
Retailer 3£550 GBP
Retailer 12£563 GBP
Retailer 15£609 GBP
Retailer 16£620 GBP
Retailer 8£657 GBP
Retailer 9£776 GBP
Do Amore Diamonds£1,352 GBP

24 data points across 16 retailers

11 retailers£141 GBP to £1,352 GBP

A
Cheapest Retailer
-
£141 GBP
A
Retailer 2
-
£163 GBP
View
A
Retailer 3
-
£307 GBP
View
A
Retailer 4
-
£312 GBP
View
Retailer 5
-
£470 GBP
View
Price last confirmed 10 days ago
B+
Retailer 6
-
£550 GBP
View
B
Retailer 7
-
£563 GBP
View
B
Retailer 8
-
£609 GBP
View
B
Retailer 9
-
£620 GBP
View
Retailer 10
-
£776 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Do Amore Diamonds
27-F9A82179E · Nov 2
£1,352 GBP
$1,820 USD
View
10 more retailers have this diamond
Prices start from £141 GBPSave up to £1,211 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
1.20ct Princess
£141 GBP