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Round|Natural|GIA

3.21ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 7521948110

Certificate GIA 7521948110

Diamond specifications and retailer prices

From £27,993 GBP
CA$52,094 CAD
As of October 30, 2026
Save £7,260 GBP (21%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £35,253 GBP at Yorxs · As of October 30, 2026
View at Yorxs

About this 3.21ct natural round diamond

This 3.21ct natural round sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7521948110. Listed at 7 retailers as of October 30, 2026, with prices from £27,993 to £35,253, a £7,260 spread on the same certified stone. Yorxs lists it at £35,253. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 7521948110
Dimensions9.35 × 9.40 × 5.84 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Feather, Crystal, Cloud, Pinpoint
Top View
9.35 mm9.40 mm3.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7521948110
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°CuletDepth 62.2%

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: Oct 30
Current: £28,413 GBP|Low: £27,993 GBP|High: £35,253 GBP|Avg: £31,368 GBP|+0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Yorxs
October 30, 2026
Retailer 4£27,993 GBP
Retailer 1£28,413 GBP
Retailer 5£29,461 GBP
Retailer 7£29,588 GBP
Retailer 2£31,394 GBP
Retailer 3£34,533 GBP
Retailer 6£35,016 GBP
Yorxs£35,253 GBP

21 data points across 8 retailers

7 retailers£27,993 GBP to £35,253 GBP

B+
Cheapest Retailer
-
£27,993 GBP
CA$52,094 CAD
B+
Retailer 2
-
£28,413 GBP
$38,071 USD
View
B
Retailer 3
-
£29,461 GBP
$39,475 USD
View
B
Retailer 4
-
£31,394 GBP
$42,064 USD
View
B
Retailer 5
-
£34,533 GBP
$46,270 USD
View
B
Retailer 6
-
£35,016 GBP
$46,917 USD
View
Most Expensive
B
Yorxs
571363841 · Oct 30
£35,253 GBP
€44,986 EUR
View
6 more retailers have this diamond
Prices start from £27,993 GBPSave up to £7,260 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
£27,993 GBP