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Round|Natural|GIA

1.21ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2231667421

Certificate GIA 2231667421

Diamond specifications and retailer prices

From $2,253 USD
As of November 5, 2026
Save $4,009 USD (64%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,262 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 2231667421. Listed at 15 retailers as of November 5, 2026, with prices from $2,253 to $6,262, a $4,009 spread on the same certified stone. NZ Jewellers lists it at $6,262. 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 angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2231667421
Dimensions6.83 × 6.86 × 4.25 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.83 mm6.86 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2231667421
Side View
Table 55.0%Crown 35.5°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 62.1%

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 5
Current: $6,262 USD|Low: $2,253 USD|High: $6,262 USD|Avg: $3,348 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
November 6, 2026
Retailer 6$2,253 USD
Retailer 7$2,631 USD
Retailer 11$2,676 USD
Retailer 4$2,968 USD
Retailer 10$2,973 USD
Retailer 12$2,973 USD
Retailer 13$2,996 USD
Retailer 5$3,130 USD
Retailer 14$3,130 USD
Retailer 2$3,183 USD
Retailer 3$3,230 USD
Retailer 8$3,297 USD
Retailer 15$4,360 USD
Retailer 9$4,996 USD
NZ Jewellers$6,262 USD

25 data points across 15 retailers

15 retailers$2,253 USD to $6,262 USD

A
Cheapest Retailer
-
$2,253 USD
A
Retailer 2
-
$2,631 USD
View
A
Retailer 3
-
$2,676 USD
View
B+
Retailer 4
-
$2,968 USD
View
B+
Retailer 5
-
$2,973 USD
View
B+
Retailer 6
-
$2,973 USD
View
B+
Retailer 7
-
$2,996 USD
View
B+
Retailer 8
-
$3,130 USD
View
B+
Retailer 9
-
$3,130 USD
View
B+
Retailer 10
-
$3,183 USD
View
B+
Retailer 11
-
$3,230 USD
View
B+
Retailer 12
-
$3,297 USD
View
B
Retailer 13
-
$4,360 USD
View
B
Retailer 14
-
$4,996 USD
View
Most Expensive
B
NZ Jewellers
c8614bb8-53af-487f-bd0f-6c8b45bb686f · Nov 5
$6,262 USD
View
14 more retailers have this diamond
Prices start from $2,253 USDSave up to $4,009 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
$2,253 USD