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1.00ct J SI1 Round Natural Diamond

EX • J/SI1 • HRD 260000116770

Certificate HRD 260000116770

Diamond specifications and retailer prices

From $2,044 NZD
As of November 6, 2026
Save $4,591 NZD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,635 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct 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 HRD 260000116770. Listed at 15 retailers as of November 5, 2026, with prices from $2,044 to $6,635, a $4,591 spread on the same certified stone. NZ Jewellers lists it at $6,635. 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

1.00
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle40.8°
OriginNatural
Grading LabHRD
CertificateHRD 260000116770
Dimensions6.34 × 6.39 × 4.01 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.34 mm6.39 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 260000116770
Side View
Table 56.0%Crown 36.6°Girdle: MED-MEDPavilion 40.8°Culet: NoneDepth 62.9%

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: $6,635 NZD|Low: $2,044 NZD|High: $6,806 NZD|Avg: $3,413 NZD|-2.5%
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
November 6, 2026
Retailer 2$2,044 NZD
Retailer 9$2,493 NZD
Retailer 4$2,509 NZD
Retailer 12$2,545 NZD
Retailer 5$2,720 NZD
Retailer 13$2,845 NZD
Retailer 7$3,050 NZD
Retailer 3$3,139 NZD
Retailer 8$3,171 NZD
Retailer 11$3,546 NZD
Retailer 6$3,920 NZD
Retailer 14$4,490 NZD
Retailer 10$4,753 NZD
NZ Jewellers$6,635 NZD

34 data points across 14 retailers

15 retailers$2,044 NZD to $6,635 NZD

A
Cheapest Retailer
-
$2,044 NZD
A
Retailer 2
-
$2,493 NZD
View
A
Retailer 3
-
$2,509 NZD
View
Final sale: no returns
A
Retailer 4
-
$2,545 NZD
View
A
Retailer 5
-
$2,720 NZD
View
A
Retailer 6
-
$2,845 NZD
View
B+
Retailer 7
-
$3,034 NZD
View
A
Retailer 8
-
$3,050 NZD
View
B+
Retailer 9
-
$3,139 NZD
View
A
Retailer 10
-
$3,171 NZD
View
B+
Retailer 11
-
$3,546 NZD
View
B+
Retailer 12
-
$3,920 NZD
View
B
Retailer 13
-
$4,490 NZD
View
B
Retailer 14
-
$4,753 NZD
View
Most Expensive
B
NZ Jewellers
09ec0cc1-6dc2-4b6c-825e-9b34c40caf83 · Nov 5
$6,635 NZD
$3,678 USD
View
14 more retailers have this diamond
Prices start from $2,044 NZDSave up to $4,591 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
1.00ct Round
$2,044 NZD