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Radiant|Lab Grown|IGI

21.01ct G VS1 Radiant Lab Grown Diamond

VG • G/VS1 • IGI LG831628596

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG831628596

Diamond specifications and retailer prices

From £4,923 GBP
As of November 1, 2026
Save £16,957 GBP (77%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £21,881 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 21.01ct lab-grown radiant diamond

This 21.01ct lab-grown radiant sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG831628596 or 831628596. Listed at 16 retailers as of October 31, 2026, with prices from £4,923 to £21,881, a £16,957 spread on the same certified stone. Taylor and Hart lists it at £21,881. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

21.01
Carat
G
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle49.4°
Pavilion angle31.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831628596
Dimensions20.14 × 13.79 × 8.41 mm
L/W Ratio1.46
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
20.14 mm13.79 mm21.01 ctG / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831628596
Side View
Table 66.0%Crown 49.4°Girdle: Slightly ThickPavilion 31.4°Culet: NoneDepth 61.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £8,092 GBP|Low: £4,921 GBP|High: £21,881 GBP|Avg: £8,801 GBP|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Taylor and Hart
November 2, 2026
Retailer 9£4,923 GBP
Retailer 14£5,707 GBP
Retailer 13£5,935 GBP
Retailer 6£6,418 GBP
Retailer 5£6,620 GBP
Retailer 7£6,620 GBP
Retailer 10£6,621 GBP
Retailer 15£6,654 GBP
Retailer 12£7,364 GBP
Retailer 11£7,430 GBP
Retailer 3£7,445 GBP
Retailer 4£7,666 GBP
Retailer 1£8,092 GBP
Retailer 8£12,602 GBP
Retailer 2£19,552 GBP
Taylor and Hart£21,881 GBP

32 data points across 16 retailers

16 retailers£4,923 GBP to £21,881 GBP

A
Cheapest Retailer
-
£4,923 GBP
B+
Retailer 2
-
£5,707 GBP
$7,658 USD
View
B+
Retailer 3
-
£5,935 GBP
$7,965 USD
View
B+
Retailer 4
-
£6,418 GBP
$8,612 USD
View
B+
Retailer 5
-
£6,620 GBP
$8,884 USD
View
Retailer 6
-
£6,620 GBP
$8,884 USD
View
Price last confirmed 20 days ago
B+
Retailer 7
-
£6,621 GBP
$8,885 USD
View
B+
Retailer 8
-
£6,654 GBP
$8,929 USD
View
Final sale: no returns
B+
Retailer 9
-
£7,364 GBP
$9,882 USD
View
Retailer 10
-
£7,430 GBP
$9,970 USD
View
Price last confirmed 12 days ago
B+
Retailer 11
-
£7,445 GBP
$9,991 USD
View
B+
Retailer 12
-
£7,666 GBP
$10,287 USD
View
B+
Retailer 13
-
£8,092 GBP
View
B
Retailer 14
-
£12,602 GBP
A$26,018 AUD
View
B
Retailer 15
-
£19,552 GBP
$26,238 USD
View
Most Expensive
B
Taylor and Hart
N94ZD6T · Oct 31
£21,881 GBP
$29,362 USD
View
15 more retailers have this diamond
Prices start from £4,923 GBPSave up to £16,957 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
21.01ct Radiant
£4,923 GBP