Round|Natural|GIA

1.21ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 6522585574

Certificate GIA 6522585574

Diamond specifications and retailer prices

From $2,686 USD
As of November 6, 2026
Save $3,593 USD (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $6,279 USD 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 $2,686 to $6,279, a $3,593 spread on the same certified stone. NZ Jewellers lists it at $6,279. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,279 USD|Low: $2,662 USD|High: $6,279 USD|Avg: $3,879 USD
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$2,686 USD
Retailer 18$2,688 USD
Retailer 5$3,199 USD
Retailer 16$3,230 USD
Retailer 10$3,326 USD
Retailer 11$3,448 USD
Retailer 6$3,465 USD
Retailer 4$3,604 USD
Retailer 9$3,604 USD
Retailer 13$3,707 USD
Retailer 12$3,742 USD
Retailer 7$3,743 USD
Retailer 8$3,749 USD
Retailer 3$4,158 USD
Retailer 14$4,185 USD
Retailer 15$4,399 USD
Retailer 17$6,027 USD
NZ Jewellers$6,279 USD

24 data points across 18 retailers

19 retailers$2,686 USD to $6,279 USD

A
Cheapest Retailer
-
$2,686 USD
A
Retailer 2
-
$2,688 USD
View
B+
Retailer 3
-
$3,199 USD
View
B+
Retailer 4
-
$3,230 USD
View
B+
Retailer 5
-
$3,326 USD
View
Final sale: no returns
B+
Retailer 6
-
$3,448 USD
View
B+
Retailer 7
-
$3,465 USD
View
B+
Retailer 8
-
$3,604 USD
View
Retailer 9
-
$3,604 USD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$3,707 USD
View
B+
Retailer 11
-
$3,742 USD
View
B+
Retailer 12
-
$3,743 USD
View
B+
Retailer 13
-
$3,749 USD
View
Retailer 14
-
$3,946 USD
View
Price last confirmed 29 days ago
B+
Retailer 15
-
$4,158 USD
View
B+
Retailer 16
-
$4,185 USD
View
B+
Retailer 17
-
$4,399 USD
View
B
Retailer 18
-
$6,027 USD
View
Most Expensive
B
NZ Jewellers
b925d230-40f5-4a38-baa3-40e6d16c4a2c · Nov 5
$6,279 USD
View
18 more retailers have this diamond
Prices start from $2,686 USDSave up to $3,593 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
1.21ct Round
$2,686 USD