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Round|Natural|GIA

3.21ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 6555961001

Certificate GIA 6555961001

Diamond specifications and retailer prices

From $23,593 AUD
As of November 4, 2026
Save $6,335 AUD (21%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $32,935 AUD at NZ Jewellers · As of August 29, 2026
View at NZ Jewellers

About this 3.21ct natural round diamond

This 3.21ct natural round sits in the three to five carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6555961001. Listed at 6 retailers as of November 4, 2026, with a 27% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6555961001
Dimensions9.37 × 9.42 × 5.84 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
9.37 mm9.42 mm3.21 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555961001
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°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 4
Current: $29,929 AUD|Low: $23,593 AUD|High: $30,137 AUD|Avg: $26,740 AUD|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 2$23,593 AUD
Retailer 5$25,092 AUD
Retailer 3$25,662 AUD
Retailer 4$27,800 AUD
Retailer 6$28,521 AUD
Retailer 1$29,929 AUD

8 data points across 6 retailers

6 retailers$23,593 AUD to $29,929 AUD

B+
Cheapest Retailer
-
$23,593 AUD
B+
Retailer 2
-
$25,092 AUD
View
B
Retailer 3
-
$28,521 AUD
View
Retailer 4
-
$28,870 AUD
View
Price last confirmed 61 days ago
B
Retailer 5
-
$29,929 AUD
View
Most Expensive
NZ Jewellers
5361d673-7634-40de-8bcb-76d5f55fbc2a · Aug 29
$32,935 AUD
$23,056 USD
View
Price last confirmed 68 days ago
5 more retailers have this diamond
Prices start from $23,593 AUDSave up to $6,335 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
$23,593 AUD