Radiant|Lab Grown|IGI

3.21ct J VS2 Radiant Lab Grown Diamond

EX • J/VS2 • IGI LG508125948

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

Certificate IGI LG508125948

Diamond specifications and retailer prices

From £1,455 GBP
$1,953 USD
As of November 2, 2026
Save £4,037 GBP (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £7,162 GBP at Taylor and Hart · As of October 18, 2026
View at Taylor and Hart

About this 3.21ct lab-grown radiant diamond

This 3.21ct lab-grown radiant sits in the three to five carat band, graded J colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG508125948 or 508125948. Listed at 15 retailers as of November 1, 2026, with a 277% 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

3.21
Carat
J
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508125948
Dimensions9.84 × 7.58 × 5.02 mm
L/W Ratio1.30
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
9.84 mm7.58 mm3.21 ctJ / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508125948
Side View
Table 70.0%Crown 38.3°Girdle: Slightly ThickPavilion 34.7°Culet: NoneDepth 66.2%

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: £5,492 GBP|Low: £1,282 GBP|High: £11,021 GBP|Avg: £3,426 GBP
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
Taylor and Hart
November 1, 2026
Retailer 3£1,455 GBP
Retailer 9£1,602 GBP
Retailer 13£1,743 GBP
Retailer 14£1,794 GBP
Retailer 10£1,859 GBP
Retailer 2£1,949 GBP
Retailer 8£1,982 GBP
Retailer 4£2,626 GBP
Retailer 5£2,643 GBP
Retailer 12£2,819 GBP
Retailer 11£2,904 GBP
Retailer 7£2,913 GBP
Retailer 1£5,492 GBP
Taylor and Hart£7,162 GBP
Retailer 6£11,021 GBP

20 data points across 15 retailers

15 retailers£1,455 GBP to £5,492 GBP

B+
Cheapest Retailer
-
£1,455 GBP
$1,953 USD
B+
Retailer 2
-
£1,602 GBP
$2,150 USD
View
B
Retailer 3
-
£1,743 GBP
$2,339 USD
View
B
Retailer 4
-
£1,794 GBP
$2,408 USD
View
Final sale: no returns
B
Retailer 5
-
£1,859 GBP
$2,494 USD
View
Retailer 6
-
£1,859 GBP
$2,494 USD
View
Price last confirmed 22 days ago
B
Retailer 7
-
£1,949 GBP
$2,616 USD
View
B
Retailer 8
-
£1,982 GBP
$2,660 USD
View
B
Retailer 9
-
£2,626 GBP
CA$4,894 CAD
View
B
Retailer 10
-
£2,819 GBP
$3,783 USD
View
B
Retailer 11
-
£2,904 GBP
$3,897 USD
View
B
Retailer 12
-
£2,913 GBP
$3,909 USD
View
B
Retailer 13
-
£5,492 GBP
View
Most Expensive
Taylor and Hart
7J9K5KU · Oct 18
£7,162 GBP
$9,611 USD
View
Price under review
13 more retailers have this diamond
Prices start from £1,455 GBPSave up to £4,037 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+
3.21ct Radiant
£1,455 GBP