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Round|Natural|GIA

1.21ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 5563654767

Certificate GIA 5563654767

Diamond specifications and retailer prices

From $2,137 USD
As of November 1, 2026
Save $2,661 USD (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $5,999 USD at NZ Jewellers · As of October 30, 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 5563654767. Listed at 18 retailers as of November 1, 2026, with a 125% 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 angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5563654767
Dimensions6.78 × 6.74 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.78 mm6.74 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5563654767
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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 1
Current: $5,999 USD|Low: $2,048 USD|High: $5,999 USD|Avg: $3,015 USD|+3.5%
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
Retailer 19
November 2, 2026
Retailer 3$2,137 USD
Retailer 12$2,175 USD
Retailer 18$2,357 USD
Retailer 8$2,413 USD
Retailer 14$2,480 USD
Retailer 17$2,648 USD
Retailer 7$2,675 USD
Retailer 6$2,685 USD
Retailer 10$2,771 USD
Retailer 16$2,869 USD
Retailer 11$2,878 USD
Retailer 9$2,970 USD
Retailer 2$3,049 USD
Retailer 4$3,091 USD
Retailer 5$3,311 USD
Retailer 13$3,352 USD
Retailer 19$3,513 USD
Retailer 15$4,798 USD
NZ Jewellers$5,999 USD

13 data points across 19 retailers

18 retailers$2,137 USD to $4,798 USD

A
Cheapest Retailer
-
$2,137 USD
A
Retailer 2
-
$2,175 USD
View
A
Retailer 3
-
$2,357 USD
View
A
Retailer 4
-
$2,413 USD
View
A
Retailer 5
-
$2,480 USD
View
A
Retailer 6
-
$2,675 USD
View
A
Retailer 7
-
$2,685 USD
View
Retailer 8
-
$2,771 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$2,869 USD
View
Retailer 10
-
$2,878 USD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$2,970 USD
View
B+
Retailer 12
-
$3,049 USD
View
B+
Retailer 13
-
$3,091 USD
View
B+
Retailer 14
-
$3,311 USD
View
B+
Retailer 15
-
$3,352 USD
View
B+
Retailer 16
-
$3,513 USD
View
B
Retailer 17
-
$4,798 USD
View
Most Expensive
NZ Jewellers
70cd373a-5ba6-4d13-8090-58c9fbdf3b5b · Oct 30
$5,999 USD
View
Price last confirmed 7 days ago
17 more retailers have this diamond
Prices start from $2,137 USDSave up to $2,661 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
$2,137 USD