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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

GD • J/SI1 • GIA 1437705735

Certificate GIA 1437705735

Diamond specifications and retailer prices

From $2,608 NZD
As of November 6, 2026
Save $5,008 NZD (66%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,616 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 standard cut grade and certified by GIA 1437705735. Listed at 21 retailers as of November 5, 2026, with prices from $2,608 to $7,616, a $5,008 spread on the same certified stone. NZ Jewellers lists it at $7,616. 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

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1437705735
Dimensions6.23 × 6.16 × 4.07 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural, Natural
Top View
6.23 mm6.16 mm1.00 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1437705735
Side View
Table 56.0%Crown 37.5°Girdle: ThickPavilion 41°Culet: NoneDepth 65.7%

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: $2,608 NZD|Low: $2,608 NZD|High: $6,458 NZD|Avg: $4,010 NZD|-3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 1$2,608 NZD
Retailer 9$2,655 NZD
Retailer 2$3,362 NZD
Retailer 11$3,382 NZD
Retailer 8$3,473 NZD
Retailer 4$3,684 NZD
Retailer 6$3,933 NZD
Retailer 5$4,445 NZD
Retailer 7$4,452 NZD
Retailer 3$4,490 NZD
Retailer 10$6,416 NZD

38 data points across 11 retailers

21 retailers$2,608 NZD to $7,616 NZD

A
Cheapest Retailer
-
$2,608 NZD
B+
Retailer 2
-
$2,655 NZD
View
B+
Retailer 3
-
$3,222 NZD
View
B+
Retailer 4
-
$3,362 NZD
View
Final sale: no returns
B+
Retailer 5
-
$3,382 NZD
View
B+
Retailer 6
-
$3,473 NZD
View
B+
Retailer 7
-
$3,550 NZD
View
Retailer 8
-
$3,642 NZD
View
Price last confirmed 8 days ago
B
Retailer 9
-
$3,642 NZD
View
B
Retailer 10
-
$3,684 NZD
View
B
Retailer 11
-
$3,707 NZD
View
B
Retailer 12
-
$3,810 NZD
View
B
Retailer 13
-
$3,891 NZD
View
B
Retailer 14
-
$3,933 NZD
View
B
Retailer 15
-
$4,203 NZD
View
B
Retailer 16
-
$4,445 NZD
View
B
Retailer 17
-
$4,452 NZD
View
Retailer 18
-
$4,490 NZD
View
Price last confirmed 32 days ago
C
Retailer 19
-
$6,283 NZD
View
Retailer 20
-
$6,416 NZD
View
Price last confirmed 8 days ago
Most Expensive
C
NZ Jewellers
e0447a58-148d-4c6f-94b5-4afb52760dae · Nov 5
$7,616 NZD
$4,222 USD
View
20 more retailers have this diamond
Prices start from $2,608 NZDSave up to $5,008 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
$2,608 NZD