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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 $2,066 AUD
As of November 6, 2026
Save $3,966 AUD (66%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $6,031 AUD 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 $2,066 to $6,031, a $3,966 spread on the same certified stone. NZ Jewellers lists it at $6,031. 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: $2,066 AUD|Low: $2,066 AUD|High: $5,114 AUD|Avg: $3,176 AUD|-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$2,066 AUD
Retailer 9$2,103 AUD
Retailer 2$2,663 AUD
Retailer 11$2,678 AUD
Retailer 8$2,750 AUD
Retailer 4$2,917 AUD
Retailer 6$3,114 AUD
Retailer 5$3,520 AUD
Retailer 7$3,526 AUD
Retailer 3$3,556 AUD
Retailer 10$5,081 AUD

38 data points across 11 retailers

21 retailers$2,066 AUD to $6,031 AUD

A
Cheapest Retailer
-
$2,066 AUD
B+
Retailer 2
-
$2,103 AUD
View
B+
Retailer 3
-
$2,551 AUD
View
B+
Retailer 4
-
$2,663 AUD
View
Final sale: no returns
B+
Retailer 5
-
$2,678 AUD
View
B+
Retailer 6
-
$2,750 AUD
View
B+
Retailer 7
-
$2,811 AUD
View
Retailer 8
-
$2,884 AUD
View
Price last confirmed 8 days ago
B
Retailer 9
-
$2,884 AUD
View
B
Retailer 10
-
$2,917 AUD
View
B
Retailer 11
-
$2,936 AUD
View
B
Retailer 12
-
$3,017 AUD
View
B
Retailer 13
-
$3,081 AUD
View
B
Retailer 14
-
$3,114 AUD
View
B
Retailer 15
-
$3,328 AUD
View
B
Retailer 16
-
$3,520 AUD
View
B
Retailer 17
-
$3,526 AUD
View
Retailer 18
-
$3,556 AUD
View
Price last confirmed 32 days ago
C
Retailer 19
-
$4,975 AUD
View
Retailer 20
-
$5,081 AUD
View
Price last confirmed 8 days ago
Most Expensive
C
NZ Jewellers
e0447a58-148d-4c6f-94b5-4afb52760dae · Nov 5
$6,031 AUD
$4,222 USD
View
20 more retailers have this diamond
Prices start from $2,066 AUDSave up to $3,966 AUD

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
$2,066 AUD