Round|Natural|GIA

1.21ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6452098443

Certificate GIA 6452098443

Diamond specifications and retailer prices

From $4,595 USD
As of November 4, 2026
Save $4,249 USD (48%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $10,068 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6452098443. Listed at 18 retailers as of November 4, 2026, with a 92% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6452098443
Dimensions6.81 × 6.76 × 4.26 mm
L/W Ratio1.01
Top View
6.81 mm6.76 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6452098443
Side View
Table 57.0%Crown 35.5°Girdle: ThickPavilion 41.2°Culet: NoneDepth 62.7%

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: Nov 4
Current: $10,068 USD|Low: $4,195 USD|High: $10,068 USD|Avg: $6,314 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 6$4,595 USD
Retailer 7$5,034 USD
Retailer 9$5,114 USD
Retailer 3$5,453 USD
Retailer 8$5,453 USD
Retailer 4$5,775 USD
Retailer 10$5,946 USD
Retailer 11$6,292 USD
Retailer 2$6,392 USD
Retailer 5$8,844 USD
NZ Jewellers$10,068 USD

42 data points across 11 retailers

18 retailers$4,595 USD to $8,844 USD

B+
Cheapest Retailer
-
$4,595 USD
B
Retailer 2
-
$4,623 USD
View
B
Retailer 3
-
$4,756 USD
View
B
Retailer 4
-
$5,034 USD
View
Final sale: no returns
B
Retailer 5
-
$5,114 USD
View
B
Retailer 6
-
$5,453 USD
View
Retailer 7
-
$5,453 USD
View
Price last confirmed 8 days ago
B
Retailer 8
-
$5,453 USD
View
B
Retailer 9
-
$5,775 USD
View
B
Retailer 10
-
$5,946 USD
View
B
Retailer 11
-
$6,090 USD
View
B
Retailer 12
-
$6,090 USD
View
B
Retailer 13
-
$6,292 USD
View
B
Retailer 14
-
$6,300 USD
View
B
Retailer 15
-
$6,392 USD
View
Retailer 16
-
$6,638 USD
View
Price last confirmed 14 days ago
B
Retailer 17
-
$8,844 USD
View
Most Expensive
NZ Jewellers
2dbbae6e-fc61-4a8c-82e7-79b5176a6a54 · Nov 5
$10,068 USD
View
Price under review
17 more retailers have this diamond
Prices start from $4,595 USDSave up to $4,249 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.

B+
1.21ct Round
$4,595 USD