Princess|Lab Grown|IGI

20.00ct F VS1 Princess Lab Grown Diamond

ID • F/VS1 • IGI LG812631929

Shape and cutting style on the report: Princess cut

Certificate IGI LG812631929

Diamond specifications and retailer prices

From £11,037 GBP
$14,811 USD
As of November 2, 2026
Save £12,512 GBP (53%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £31,857 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 20ct lab-grown princess diamond

This 20ct 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 LG812631929 or 812631929. Listed at 13 retailers as of October 29, 2026, with a 113% 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

20.00
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle57.8°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812631929
Dimensions14.31 × 14.25 × 9.91 mm
L/W Ratio1.00
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.31 mm14.25 mm20.00 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812631929
Side View
Table 79.0%Crown 57.8°Girdle: STK-THKPavilion 34.8°Culet: NoneDepth 69.5%

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 2
Current: £23,338 GBP|Low: £10,718 GBP|High: £63,146 GBP|Avg: £20,995 GBP|-0.2%
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 1, 2026
Retailer 2£11,037 GBP
Retailer 5£11,479 GBP
Retailer 10£11,696 GBP
Retailer 11£12,779 GBP
Retailer 6£12,884 GBP
Retailer 3£13,433 GBP
Retailer 7£14,045 GBP
Retailer 8£19,219 GBP
Retailer 12£21,342 GBP
Retailer 1£23,338 GBP
Retailer 9£23,549 GBP
Taylor and Hart£31,857 GBP
Retailer 4£63,146 GBP

30 data points across 13 retailers

13 retailers£11,037 GBP to £23,549 GBP

B+
Cheapest Retailer
-
£11,037 GBP
$14,811 USD
B+
Retailer 2
-
£11,479 GBP
$15,404 USD
View
B+
Retailer 3
-
£11,696 GBP
$15,695 USD
View
B
Retailer 4
-
£12,779 GBP
$17,148 USD
View
B+
Retailer 5
-
£12,884 GBP
$17,290 USD
View
B
Retailer 6
-
£13,433 GBP
$18,026 USD
View
Final sale: no returns
B
Retailer 7
-
£14,045 GBP
View
B
Retailer 8
-
£19,219 GBP
ZAR 416,646 ZAR
View
B
Retailer 9
-
£21,342 GBP
$28,640 USD
View
B
Retailer 10
-
£23,338 GBP
A$48,181 AUD
View
B
Retailer 11
-
£23,549 GBP
€30,097 EUR
View
Most Expensive
Taylor and Hart
TY84TBY · Oct 31
£31,857 GBP
$42,751 USD
View
Price under review
11 more retailers have this diamond
Prices start from £11,037 GBPSave up to £12,512 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+
20.00ct Princess
£11,037 GBP