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Princess|Lab Grown|IGI

20.21ct F VS1 Princess Lab Grown Diamond

ID • F/VS1 • IGI LG779661404

Shape and cutting style on the report: Princess cut

Certificate IGI LG779661404

Diamond specifications and retailer prices

From £14,267 GBP
$19,145 USD
As of November 1, 2026
Save £14,509 GBP (50%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £42,195 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 20.21ct lab-grown princess diamond

This 20.21ct lab-grown princess sits in the over five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG779661404 or 779661404. Listed at 10 retailers as of October 29, 2026, with a 102% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

20.21
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG779661404
Dimensions14.65 × 14.61 × 10.37 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.65 mm14.61 mm20.21 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG779661404
Side View
Table 69.0%Crown 34.5°Girdle: Slightly ThickPavilion 36.3°Culet: NoneDepth 71.0%

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 1
Current: £17,834 GBP|Low: £10,599 GBP|High: £42,429 GBP|Avg: £21,956 GBP|+43.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Taylor and Hart
November 2, 2026
Retailer 4£10,599 GBP
Retailer 3£12,620 GBP
Retailer 5£14,492 GBP
Retailer 7£16,938 GBP
Retailer 9£17,778 GBP
Retailer 1£17,834 GBP
Retailer 12£20,134 GBP
Retailer 8£23,378 GBP
Retailer 10£24,733 GBP
Retailer 11£28,775 GBP
Retailer 2£30,471 GBP
Retailer 6£33,769 GBP
Taylor and Hart£42,195 GBP

12 data points across 13 retailers

10 retailers£14,267 GBP to £28,775 GBP

B
Cheapest Retailer
-
£14,267 GBP
$19,145 USD
B+
Retailer 2
-
£14,492 GBP
View
B
Retailer 3
-
£16,938 GBP
$22,730 USD
View
B
Retailer 4
-
£17,778 GBP
$23,857 USD
View
B
Retailer 5
-
£17,834 GBP
$23,932 USD
View
B
Retailer 6
-
£23,378 GBP
$31,372 USD
View
B
Retailer 7
-
£24,733 GBP
$33,190 USD
View
Final sale: no returns
B
Retailer 8
-
£28,775 GBP
€36,776 EUR
View
Retailer 9
-
£33,769 GBP
A$69,716 AUD
View
Price under review
Most Expensive
Taylor and Hart
I1FWVL2 · Oct 31
£42,195 GBP
$56,623 USD
View
Price under review
9 more retailers have this diamond
Prices start from £14,267 GBPSave up to £14,509 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+
20.21ct Princess
£14,267 GBP