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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

VG • J/SI1 • GIA 5423535519

Certificate GIA 5423535519

Diamond specifications and retailer prices

From $3,159 NZD
As of November 6, 2026
Save $5,101 NZD (62%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $8,260 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 very-good cut grade and certified by GIA 5423535519. Listed at 20 retailers as of November 5, 2026, with prices from $3,159 to $8,260, a $5,101 spread on the same certified stone. NZ Jewellers lists it at $8,260. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle38.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 5423535519
Dimensions6.30 × 6.25 × 3.97 mm
L/W Ratio1.01
Top View
6.30 mm6.25 mm1.00 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5423535519
Side View
Table 57.0%Crown 38.5°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 63.3%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $4,604 NZD|Low: $2,838 NZD|High: $7,005 NZD|Avg: $4,522 NZD|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 7$3,233 NZD
Retailer 9$3,303 NZD
Retailer 8$3,328 NZD
Retailer 2$3,745 NZD
Retailer 5$4,266 NZD
Retailer 1$4,604 NZD
Retailer 4$4,822 NZD
Retailer 10$4,858 NZD
Retailer 3$5,009 NZD
Retailer 6$6,902 NZD

42 data points across 10 retailers

20 retailers$3,159 NZD to $8,260 NZD

B+
Cheapest Retailer
-
$3,159 NZD
B+
Retailer 2
-
$3,225 NZD
View
B+
Retailer 3
-
$3,233 NZD
View
B+
Retailer 4
-
$3,303 NZD
View
Final sale: no returns
B+
Retailer 5
-
$3,328 NZD
View
B+
Retailer 6
-
$3,366 NZD
View
Retailer 7
-
$3,579 NZD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$3,579 NZD
View
B
Retailer 9
-
$3,644 NZD
View
B+
Retailer 10
-
$3,745 NZD
View
B
Retailer 11
-
$4,089 NZD
View
B
Retailer 12
-
$4,129 NZD
View
B
Retailer 13
-
$4,266 NZD
View
B
Retailer 14
-
$4,549 NZD
View
B
Retailer 15
-
$4,604 NZD
View
B
Retailer 16
-
$4,822 NZD
View
Retailer 17
-
$4,858 NZD
View
Price last confirmed 31 days ago
B
Retailer 18
-
$5,009 NZD
View
B
Retailer 19
-
$6,902 NZD
View
Most Expensive
C
NZ Jewellers
9ae6d256-84b7-426f-a4bd-e2661672ff5a · Nov 5
$8,260 NZD
$4,579 USD
View
19 more retailers have this diamond
Prices start from $3,159 NZDSave up to $5,101 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
$3,159 NZD