Round|Natural|GIA

3.21ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 1493947605

Certificate GIA 1493947605

Diamond specifications and retailer prices

From $15,550 USD
As of November 4, 2026
Save $3,666 USD (19%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $21,895 USD at NZ Jewellers · As of September 15, 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 1493947605. Listed at 13 retailers as of November 4, 2026, with a relatively tight 24% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1493947605
Dimensions9.49 × 9.53 × 5.83 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Culet sizeNone
Cert comments
Additional clouds pinpoints internal graining and surface graining are not shown.
Top View
9.49 mm9.53 mm3.21 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1493947605
Side View
Table 56.0%Crown 34.5°GirdlePavilion 40.8°Culet: NoneDepth 61.3%

Caratlytics Score

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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 4
Current: $16,139 USD|Low: $15,400 USD|High: $21,774 USD|Avg: $18,307 USD|-13.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6$15,550 USD
Retailer 7$15,684 USD
Retailer 4$16,130 USD
Retailer 1$16,139 USD
Retailer 5$17,970 USD
Retailer 2$18,307 USD
Retailer 8$18,757 USD
Retailer 3$19,216 USD

42 data points across 8 retailers

13 retailers$15,550 USD to $19,216 USD

A
Cheapest Retailer
-
$15,550 USD
A
Retailer 2
-
$15,684 USD
View
B+
Retailer 3
-
$16,130 USD
View
B+
Retailer 4
-
$16,139 USD
View
B+
Retailer 5
-
$17,970 USD
View
B+
Retailer 6
-
$18,307 USD
View
Retailer 7
-
$18,482 USD
View
Price last confirmed 53 days ago
Retailer 8
-
$19,192 USD
View
Price last confirmed 53 days ago
B+
Retailer 9
-
$19,216 USD
View
Retailer 10
-
$19,695 USD
View
Price last confirmed 38 days ago
Retailer 11
-
$20,321 USD
View
Price last confirmed 36 days ago
Retailer 12
-
$21,102 USD
View
Price last confirmed 38 days ago
Most Expensive
NZ Jewellers
3fee2b49-c1c0-44fa-9964-eb392d633b56 · Sep 15
$21,895 USD
View
Price last confirmed 52 days ago
12 more retailers have this diamond
Prices start from $15,550 USDSave up to $3,666 USD

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
$15,550 USD