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Round|Natural|GIA

1.21ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6522585574

Certificate GIA 6522585574

Diamond specifications and retailer prices

From $3,909 AUD
As of November 6, 2026
Save $5,229 AUD (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,138 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6522585574. Listed at 19 retailers as of November 5, 2026, with prices from $3,909 to $9,138, a $5,229 spread on the same certified stone. NZ Jewellers lists it at $9,138. 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

1.21
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6522585574
Dimensions6.79 × 6.73 × 4.22 mm
L/W Ratio1.01
Top View
6.79 mm6.73 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6522585574
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $9,138 AUD|Low: $3,874 AUD|High: $9,138 AUD|Avg: $5,646 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 2$3,909 AUD
Retailer 18$3,912 AUD
Retailer 5$4,656 AUD
Retailer 16$4,701 AUD
Retailer 10$4,841 AUD
Retailer 11$5,018 AUD
Retailer 6$5,043 AUD
Retailer 4$5,245 AUD
Retailer 9$5,245 AUD
Retailer 13$5,395 AUD
Retailer 12$5,446 AUD
Retailer 7$5,448 AUD
Retailer 8$5,456 AUD
Retailer 3$6,052 AUD
Retailer 14$6,091 AUD
Retailer 15$6,402 AUD
Retailer 17$8,772 AUD
NZ Jewellers$9,138 AUD

24 data points across 18 retailers

19 retailers$3,909 AUD to $9,138 AUD

A
Cheapest Retailer
-
$3,909 AUD
A
Retailer 2
-
$3,912 AUD
View
B+
Retailer 3
-
$4,656 AUD
View
B+
Retailer 4
-
$4,701 AUD
View
B+
Retailer 5
-
$4,841 AUD
View
Final sale: no returns
B+
Retailer 6
-
$5,018 AUD
View
B+
Retailer 7
-
$5,043 AUD
View
B+
Retailer 8
-
$5,245 AUD
View
Retailer 9
-
$5,245 AUD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$5,395 AUD
View
B+
Retailer 11
-
$5,446 AUD
View
B+
Retailer 12
-
$5,448 AUD
View
B+
Retailer 13
-
$5,456 AUD
View
Retailer 14
-
$5,743 AUD
View
Price last confirmed 30 days ago
B+
Retailer 15
-
$6,052 AUD
View
B+
Retailer 16
-
$6,091 AUD
View
B+
Retailer 17
-
$6,402 AUD
View
B
Retailer 18
-
$8,772 AUD
View
Most Expensive
B
NZ Jewellers
b925d230-40f5-4a38-baa3-40e6d16c4a2c · Nov 5
$9,138 AUD
$6,279 USD
View
18 more retailers have this diamond
Prices start from $3,909 AUDSave up to $5,229 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.

A
1.21ct Round
$3,909 AUD