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Round|Natural|GIA

3.21ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1545302098

Certificate GIA 1545302098

Diamond specifications and retailer prices

From £14,919 GBP
As of November 5, 2026
Save £9,351 GBP (39%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £24,270 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 3.21ct natural round diamond

This 3.21ct natural round sits in the three to five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1545302098. Listed at 9 retailers as of November 2, 2026, with prices from £14,919 to £24,270, a £9,351 spread on the same certified stone. MOH London lists it at £24,270. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1545302098
Dimensions9.35 × 9.39 × 5.84 mm
L/W Ratio1.00
Girdle conditionSlightly Thick
Key to symbols
Twinning Wisp, Cloud, Crystal, Feather, Needle
Top View
9.35 mm9.39 mm3.21 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545302098
Side View
Table 58.0%Crown 36°Girdle: STK-STKPavilion 40.8°CuletDepth 62.3%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £24,270 GBP|Low: £14,017 GBP|High: £24,270 GBP|Avg: £17,269 GBP
MOH London
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
November 5, 2026
Retailer 13£14,017 GBP
Retailer 14£14,700 GBP
Retailer 8£14,919 GBP
Retailer 4£16,437 GBP
Retailer 7£16,554 GBP
Retailer 6£16,624 GBP
Retailer 12£17,263 GBP
Retailer 3£17,804 GBP
Retailer 11£17,833 GBP
Retailer 5£18,181 GBP
Retailer 9£18,399 GBP
Retailer 2£21,221 GBP
Retailer 10£21,797 GBP
MOH London£24,270 GBP

27 data points across 14 retailers

9 retailers£14,919 GBP to £24,270 GBP

Retailer 1
-
£14,017 GBP
Price last confirmed 19 days ago
A
Retailer 2
-
£14,919 GBP
View
B+
Retailer 3
-
£16,554 GBP
View
B+
Retailer 4
-
£17,263 GBP
View
B+
Retailer 5
-
£17,833 GBP
View
B+
Retailer 6
-
£18,399 GBP
View
B
Retailer 7
-
£21,221 GBP
View
B
Retailer 8
-
£21,797 GBP
View
Most Expensive
B
MOH London
2ABA46FEC · Nov 2
£24,270 GBP
View
8 more retailers have this diamond
Prices start from £14,919 GBPSave up to £9,351 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
3.21ct Round
£14,919 GBP