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Round|Natural|GIA

1.00ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1559567941

Certificate GIA 1559567941

Diamond specifications and retailer prices

From $3,444 NZD
As of November 6, 2026
22 retailers carry this diamond
Most expensive: $7,064 NZD at NZ Jewellers · As of October 11, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1559567941. Listed at 22 retailers as of November 6, 2026. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1559567941
Dimensions6.34 × 6.38 × 3.94 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.34 mm6.38 mm1.00 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559567941
Side View
Table 58.0%Crown 36°Girdle: THN-STKPavilion 40.6°Culet: NDepth 61.9%

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 6
Current: $7,064 NZD|Low: $2,827 NZD|High: $7,064 NZD|Avg: $3,679 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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 26, 2026
Retailer 15$2,827 NZD
Retailer 13$2,828 NZD
Retailer 10$2,866 NZD
Retailer 6$2,896 NZD
Retailer 8$2,896 NZD
Retailer 16$2,971 NZD
Retailer 7$3,029 NZD
Retailer 12$3,040 NZD
Retailer 5$3,077 NZD
Retailer 9$3,341 NZD
Retailer 17$3,405 NZD
Retailer 2$3,547 NZD
Retailer 14$3,670 NZD
Retailer 4$3,748 NZD
Retailer 11$3,972 NZD
Retailer 18$4,614 NZD
Retailer 3$5,068 NZD
NZ Jewellers$7,064 NZD

32 data points across 18 retailers

22 retailers

Retailer 1
-
$2,827 NZD
Price last confirmed 13 days ago
Retailer 2
-
$2,828 NZD
View
Price last confirmed 13 days ago
Retailer 3
-
$2,866 NZD
View
Price last confirmed 11 days ago
Retailer 4
-
$2,896 NZD
View
Price last confirmed 27 days ago
Retailer 5
-
$2,896 NZD
View
Price last confirmed 25 days ago
Retailer 6
-
$2,896 NZD
View
Price last confirmed 12 days ago
Retailer 7
-
$2,896 NZD
View
Price last confirmed 15 days ago
Retailer 8
-
$2,896 NZD
View
Price last confirmed 25 days ago
Retailer 9
-
$2,971 NZD
View
Price last confirmed 10 days ago
Retailer 10
-
$3,029 NZD
View
Price last confirmed 15 days ago
Retailer 11
-
$3,040 NZD
View
Price last confirmed 11 days ago
Retailer 12
-
$3,077 NZD
View
Price last confirmed 10 days ago
Retailer 13
-
$3,341 NZD
View
Price last confirmed 26 days ago
Retailer 14
-
$3,341 NZD
View
Price last confirmed 14 days ago
Retailer 15
-
$3,405 NZD
View
Price last confirmed 13 days ago
B+
Retailer 16
-
$3,444 NZD
View
Retailer 17
-
$3,670 NZD
View
Price last confirmed 9 days ago
Retailer 18
-
$3,972 NZD
View
Price last confirmed 11 days ago
Retailer 19
-
$4,614 NZD
View
Price last confirmed 11 days ago
Retailer 20
-
$5,068 NZD
View
Price last confirmed 12 days ago
Retailer 21
-
$7,064 NZD
View
Price last confirmed 14 days ago
Most Expensive
NZ Jewellers
ac85094a-1a38-4c69-a7f7-313bfe985f19 · Oct 11
$7,064 NZD
$3,971 USD
View
Price last confirmed 26 days ago
21 more retailers have this diamond
Prices start from $3,444 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.

B+
1.00ct Round
$3,444 NZD