Round|Natural|GIA

1.21ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6565141930

Certificate GIA 6565141930

Diamond specifications and retailer prices

From $2,406 USD
As of November 5, 2026
Save $3,028 USD (56%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,434 USD at NZ Jewellers · As of November 2, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6565141930. Listed at 11 retailers as of November 2, 2026, with prices from $2,406 to $5,434, a $3,028 spread on the same certified stone. NZ Jewellers lists it at $5,434. 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
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6565141930
Dimensions6.74 × 6.78 × 4.25 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
6.74 mm6.78 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565141930
Side View
Table 57.0%Crown 35.5°GirdlePavilion 41°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $5,434 USD|Low: $2,370 USD|High: $5,434 USD|Avg: $3,024 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 4$2,406 USD
Retailer 6$2,466 USD
Retailer 10$2,500 USD
Retailer 5$2,550 USD
Retailer 11$2,550 USD
Retailer 9$2,599 USD
Retailer 8$2,719 USD
Retailer 2$2,919 USD
Retailer 3$2,919 USD
Retailer 7$4,554 USD
NZ Jewellers$5,434 USD

36 data points across 11 retailers

11 retailers$2,406 USD to $5,434 USD

B+
Cheapest Retailer
-
$2,406 USD
B+
Retailer 2
-
$2,466 USD
View
B+
Retailer 3
-
$2,500 USD
View
B+
Retailer 4
-
$2,550 USD
View
B+
Retailer 5
-
$2,550 USD
View
B+
Retailer 6
-
$2,599 USD
View
B+
Retailer 7
-
$2,719 USD
View
B
Retailer 8
-
$2,919 USD
View
Retailer 9
-
$2,919 USD
View
Price last confirmed 30 days ago
B
Retailer 10
-
$4,554 USD
View
Most Expensive
B
NZ Jewellers
1e048ddf-3410-4771-8ee9-77380c909214 · Nov 2
$5,434 USD
View
10 more retailers have this diamond
Prices start from $2,406 USDSave up to $3,028 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
$2,406 USD