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Round|Natural|GIA

1.00ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 7428069875

Certificate GIA 7428069875

Diamond specifications and retailer prices

From $3,058 NZD
As of November 6, 2026
Save $4,919 NZD (62%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $7,977 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7428069875. Listed at 18 retailers as of November 5, 2026, with prices from $3,058 to $7,977, a $4,919 spread on the same certified stone. NZ Jewellers lists it at $7,977. 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
FluorescenceFaint
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 7428069875
Dimensions6.41 × 6.44 × 3.94 mm
L/W Ratio1.00
Top View
6.41 mm6.44 mm1.00 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7428069875
Side View
Table 62.0%Crown 34°Girdle: Slightly ThickPavilion 41.6°Culet: NoneDepth 61.3%

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: $4,449 NZD|Low: $2,740 NZD|High: $6,765 NZD|Avg: $4,120 NZD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 8$3,058 NZD
Retailer 9$3,122 NZD
Retailer 6$3,190 NZD
Retailer 7$3,617 NZD
Retailer 4$3,985 NZD
Retailer 3$4,120 NZD
Retailer 1$4,449 NZD
Retailer 2$4,839 NZD
Retailer 5$6,683 NZD

42 data points across 9 retailers

18 retailers$3,058 NZD to $7,977 NZD

A
Cheapest Retailer
-
$3,058 NZD
B+
Retailer 2
-
$3,113 NZD
View
B+
Retailer 3
-
$3,122 NZD
View
B+
Retailer 4
-
$3,190 NZD
View
Final sale: no returns
B+
Retailer 5
-
$3,250 NZD
View
B+
Retailer 6
-
$3,334 NZD
View
B+
Retailer 7
-
$3,456 NZD
View
Retailer 8
-
$3,456 NZD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$3,617 NZD
View
B
Retailer 10
-
$3,985 NZD
View
B
Retailer 11
-
$3,988 NZD
View
B+
Retailer 12
-
$4,120 NZD
View
B
Retailer 13
-
$4,392 NZD
View
B+
Retailer 14
-
$4,449 NZD
View
B
Retailer 15
-
$4,839 NZD
View
B
Retailer 16
-
$5,479 NZD
View
B
Retailer 17
-
$6,683 NZD
View
Most Expensive
B
NZ Jewellers
c5deb422-8764-4927-9c8c-61607f5a480d · Nov 5
$7,977 NZD
$4,484 USD
View
17 more retailers have this diamond
Prices start from $3,058 NZDSave up to $4,919 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
$3,058 NZD