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Round|Natural|GIA

1.21ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6552175864

Certificate GIA 6552175864

Diamond specifications and retailer prices

From $3,234 NZD
As of November 6, 2026
Save $5,841 NZD (64%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $9,075 NZD 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 6552175864. Listed at 18 retailers as of November 2, 2026, with prices from $3,234 to $9,075, a $5,841 spread on the same certified stone. NZ Jewellers lists it at $9,075. 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
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6552175864
Dimensions6.79 × 6.83 × 4.25 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Top View
6.79 mm6.83 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6552175864
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 41.2°Culet: NoneDepth 62.3%

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 6
Current: $9,075 NZD|Low: $3,234 NZD|High: $9,075 NZD|Avg: $4,896 NZD
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
November 6, 2026
Retailer 7$3,234 NZD
Retailer 13$3,942 NZD
Retailer 12$3,951 NZD
Retailer 6$4,005 NZD
Retailer 11$4,109 NZD
Retailer 3$4,340 NZD
Retailer 4$4,340 NZD
Retailer 2$4,540 NZD
Retailer 9$4,564 NZD
Retailer 5$5,008 NZD
Retailer 8$5,056 NZD
Retailer 14$5,334 NZD
Retailer 10$7,584 NZD
NZ Jewellers$9,075 NZD

28 data points across 14 retailers

18 retailers$3,234 NZD to $9,075 NZD

A
Cheapest Retailer
-
$3,234 NZD
B+
Retailer 2
-
$3,922 NZD
View
B+
Retailer 3
-
$3,942 NZD
View
B+
Retailer 4
-
$3,951 NZD
View
B+
Retailer 5
-
$4,005 NZD
View
Final sale: no returns
B+
Retailer 6
-
$4,093 NZD
View
B+
Retailer 7
-
$4,109 NZD
View
B+
Retailer 8
-
$4,320 NZD
View
B+
Retailer 9
-
$4,340 NZD
View
Retailer 10
-
$4,340 NZD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$4,540 NZD
View
B+
Retailer 12
-
$4,564 NZD
View
B
Retailer 13
-
$5,008 NZD
View
B+
Retailer 14
-
$5,056 NZD
View
B
Retailer 15
-
$5,334 NZD
View
Retailer 16
-
$5,343 NZD
View
Price last confirmed 31 days ago
B
Retailer 17
-
$7,584 NZD
View
Most Expensive
B
NZ Jewellers
d4b92014-6fab-4719-bdf5-d39cdee6a9a9 · Nov 2
$9,075 NZD
$5,031 USD
View
17 more retailers have this diamond
Prices start from $3,234 NZDSave up to $5,841 NZD

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
$3,234 NZD