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Oval|Natural|GIA

1.00ct J SI1 Oval Natural Diamond

GD • J/SI1 • GIA 6375818599

Certificate GIA 6375818599

Diamond specifications and retailer prices

From $3,509 NZD
As of November 6, 2026
Save $6,330 NZD (64%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $9,838 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural oval diamond

This 1ct natural oval sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6375818599. Listed at 20 retailers as of November 5, 2026, with prices from $3,509 to $9,838, a $6,330 spread on the same certified stone. NZ Jewellers lists it at $9,838. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6375818599
Dimensions8.68 × 5.52 × 3.23 mm
L/W Ratio1.57
Top View
8.68 mm5.52 mm1.00 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6375818599
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.6%

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: $5,845 NZD|Low: $3,272 NZD|High: $8,343 NZD|Avg: $5,024 NZD|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6$3,509 NZD
Retailer 9$3,850 NZD
Retailer 8$3,933 NZD
Retailer 7$3,942 NZD
Retailer 2$4,459 NZD
Retailer 3$4,979 NZD
Retailer 10$5,271 NZD
Retailer 4$5,744 NZD
Retailer 1$5,845 NZD
Retailer 5$8,244 NZD

45 data points across 10 retailers

20 retailers$3,509 NZD to $9,838 NZD

B+
Cheapest Retailer
-
$3,509 NZD
B
Retailer 2
-
$3,850 NZD
View
B
Retailer 3
-
$3,933 NZD
View
Final sale: no returns
B
Retailer 4
-
$3,942 NZD
View
B
Retailer 5
-
$4,113 NZD
View
B
Retailer 6
-
$4,257 NZD
View
B
Retailer 7
-
$4,263 NZD
View
Retailer 8
-
$4,263 NZD
View
Price last confirmed 8 days ago
B
Retailer 9
-
$4,459 NZD
View
B
Retailer 10
-
$4,907 NZD
View
B
Retailer 11
-
$4,907 NZD
View
B
Retailer 12
-
$4,919 NZD
View
B
Retailer 13
-
$4,979 NZD
View
B
Retailer 14
-
$5,069 NZD
View
Retailer 15
-
$5,271 NZD
View
Price last confirmed 30 days ago
B
Retailer 16
-
$5,403 NZD
View
B
Retailer 17
-
$5,744 NZD
View
B
Retailer 18
-
$5,845 NZD
View
C
Retailer 19
-
$8,244 NZD
View
Most Expensive
C
NZ Jewellers
e519cd34-a49e-4053-9f6f-69489deec606 · Nov 5
$9,838 NZD
$5,454 USD
View
19 more retailers have this diamond
Prices start from $3,509 NZDSave up to $6,330 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 Oval
$3,509 NZD