Round|Natural|IGI

3.21ct J SI2 Round Natural Diamond

EX • J/SI2 • IGI 835613866

Shape and cutting style on the report: Round brilliant

Certificate IGI 835613866

Diamond specifications and retailer prices

From £16,044 GBP
€20,474 EUR
As of November 1, 2026
Save £875 GBP (5%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £16,920 GBP at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 3.21ct natural round diamond

This 3.21ct natural round sits in the three to five carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 835613866. Listed at 14 retailers as of October 30, 2026, with a relatively tight 5% spread, which is unusual at this carat range and suggests competitive pricing across the listings. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.21
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 835613866
Dimensions9.30 × 9.38 × 5.88 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
9.30 mm9.38 mm3.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 835613866
Side View
Table 57.0%Crown 35.7°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £16,044 GBP|Low: £7,384 GBP|High: £16,920 GBP|Avg: £10,706 GBP|+51.7%
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
Reve Diamonds
November 1, 2026
Retailer 8£7,384 GBP
Retailer 2£8,797 GBP
Retailer 7£9,016 GBP
Retailer 4£9,718 GBP
Retailer 9£9,998 GBP
Retailer 10£10,019 GBP
Retailer 3£10,272 GBP
Retailer 5£10,366 GBP
Retailer 12£10,667 GBP
Retailer 6£11,583 GBP
Retailer 11£13,487 GBP
Retailer 13£14,316 GBP
Retailer 1£16,044 GBP
Reve Diamonds£16,920 GBP

13 data points across 14 retailers

14 retailers£16,044 GBP to £16,920 GBP

Retailer 1
-
£7,384 GBP
₹942,277 INR
Price last confirmed 11 days ago
Retailer 2
-
£8,797 GBP
$11,787 USD
View
Price last confirmed 12 days ago
Retailer 3
-
£9,016 GBP
$12,081 USD
View
Price last confirmed 9 days ago
Retailer 4
-
£9,718 GBP
$13,021 USD
View
Price last confirmed 17 days ago
Retailer 5
-
£9,998 GBP
$13,397 USD
View
Price last confirmed 12 days ago
Retailer 6
-
£10,019 GBP
$13,425 USD
View
Price last confirmed 12 days ago
Retailer 7
-
£10,272 GBP
$13,763 USD
View
Price last confirmed 13 days ago
Retailer 8
-
£10,366 GBP
$13,889 USD
View
Price last confirmed 17 days ago
Retailer 9
-
£10,667 GBP
$14,292 USD
View
Price last confirmed 12 days ago
Retailer 10
-
£11,583 GBP
View
Price last confirmed 11 days ago
Retailer 11
-
£13,487 GBP
View
Price last confirmed 12 days ago
Retailer 12
-
£14,316 GBP
$19,182 USD
View
Price last confirmed 12 days ago
B+
Retailer 13
-
£16,044 GBP
€20,474 EUR
View
Most Expensive
B+
Reve Diamonds
7961D4A45 · Oct 30
£16,920 GBP
$22,671 USD
View
13 more retailers have this diamond
Prices start from £16,044 GBPSave up to £875 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 Round
£16,044 GBP