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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 $53,396 AUD
CA$52,094 CAD
As of October 30, 2026
Save $13,395 AUD (20%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $66,791 AUD at The Diamond Guys · As of October 31, 2026
View at The Diamond Guys

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 $53,396 to $66,791, a $13,395 spread on the same certified stone. The Diamond Guys lists it at $66,791. 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: $66,772 AUD|Low: $53,396 AUD|High: $67,244 AUD|Avg: $59,861 AUD|+2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
The Diamond Guys
November 1, 2026
Retailer 5$53,396 AUD
Retailer 2$54,197 AUD
Retailer 6$56,197 AUD
Retailer 7$56,437 AUD
Retailer 3$59,882 AUD
Retailer 4$65,870 AUD
Retailer 1$66,772 AUD
The Diamond Guys$66,791 AUD

21 data points across 8 retailers

7 retailers$53,396 AUD to $66,791 AUD

B+
Cheapest Retailer
-
$53,396 AUD
CA$52,094 CAD
B+
Retailer 2
-
$54,197 AUD
$38,071 USD
View
B
Retailer 3
-
$56,197 AUD
$39,475 USD
View
B
Retailer 4
-
$59,882 AUD
$42,064 USD
View
B
Retailer 5
-
$65,870 AUD
$46,270 USD
View
B
Retailer 6
-
$66,772 AUD
€44,670 EUR
View
Most Expensive
B
The Diamond Guys
1966850820 · Oct 31
$66,791 AUD
$46,917 USD
View
6 more retailers have this diamond
Prices start from $53,396 AUDSave up to $13,395 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
$53,396 AUD