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Round|Natural|GIA

3.21ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1545414829

Certificate GIA 1545414829

Diamond specifications and retailer prices

From $49,662 AUD
CA$48,451 CAD
As of October 30, 2026
Save $33,257 AUD (40%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $82,919 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1545414829. Listed at 7 retailers as of October 30, 2026, with prices from $49,662 to $82,919, a $33,257 spread on the same certified stone. MOH London lists it at $82,919. 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 angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1545414829
Dimensions9.37 × 9.41 × 5.87 mm
L/W Ratio1.00
Culet sizeNone
Top View
9.37 mm9.41 mm3.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545414829
Side View
Table 58.0%Crown 35.5°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.5%

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: Oct 30
Current: $82,919 AUD|Low: $48,817 AUD|High: $86,367 AUD|Avg: $59,504 AUD|-3.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 8$48,817 AUD
Retailer 6$49,662 AUD
Retailer 4$52,141 AUD
Retailer 3$52,642 AUD
Retailer 5$58,359 AUD
Retailer 7$62,120 AUD
Retailer 2$64,137 AUD
MOH London$82,919 AUD

40 data points across 8 retailers

7 retailers$49,662 AUD to $82,919 AUD

B+
Cheapest Retailer
-
$49,662 AUD
CA$48,451 CAD
Retailer 2
-
$52,141 AUD
View
Price last confirmed 28 days ago
B+
Retailer 3
-
$52,642 AUD
£29,117 GBP
View
B+
Retailer 4
-
$58,359 AUD
$40,994 USD
View
B
Retailer 5
-
$62,120 AUD
$43,636 USD
View
B
Retailer 6
-
$64,137 AUD
€42,907 EUR
View
Most Expensive
B
MOH London
ECA3AF512 · Nov 1
$82,919 AUD
£45,863 GBP
View
6 more retailers have this diamond
Prices start from $49,662 AUDSave up to $33,257 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
$49,662 AUD