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Round|Natural|GIA

3.21ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1523894677

Certificate GIA 1523894677

Diamond specifications and retailer prices

From $40,913 AUD
$28,739 USD
As of November 2, 2026
Save $22,236 AUD (35%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $63,149 AUD at MOH London · As of November 1, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1523894677. Listed at 7 retailers as of November 1, 2026, with prices from $40,913 to $63,149, a $22,236 spread on the same certified stone. MOH London lists it at $63,149. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1523894677
Dimensions9.38 × 9.45 × 5.85 mm
L/W Ratio1.01
Star length50%
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
9.38 mm9.45 mm3.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1523894677
Side View
Table 58.0%Crown 33.5°Girdle: STK-STKPavilion 41.2°Culet: NoneDepth 62.1%

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: $63,149 AUD|Low: $36,194 AUD|High: $63,910 AUD|Avg: $45,875 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 3$40,913 AUD
Retailer 4$41,410 AUD
Retailer 6$42,119 AUD
Retailer 7$43,023 AUD
Retailer 5$44,635 AUD
Retailer 2$47,694 AUD
MOH London$63,149 AUD

27 data points across 7 retailers

7 retailers$40,913 AUD to $63,149 AUD

B+
Cheapest Retailer
-
$40,913 AUD
$28,739 USD
Final sale: no returns
B+
Retailer 2
-
$41,410 AUD
$29,088 USD
View
B+
Retailer 3
-
$42,119 AUD
$29,586 USD
View
B
Retailer 4
-
$43,023 AUD
$30,221 USD
View
B
Retailer 5
-
$44,635 AUD
$31,353 USD
View
B+
Retailer 6
-
$47,694 AUD
€31,907 EUR
View
Most Expensive
B
MOH London
D53CFFBBD · Nov 1
$63,149 AUD
£34,928 GBP
View
6 more retailers have this diamond
Prices start from $40,913 AUDSave up to $22,236 AUD

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
$40,913 AUD