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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1493188319

Certificate GIA 1493188319

Diamond specifications and retailer prices

From $2,944 AUD
As of November 6, 2026
Save $4,578 AUD (61%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,522 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 top-tier cut grade and certified by GIA 1493188319. Listed at 19 retailers as of November 5, 2026, with prices from $2,944 to $7,522, a $4,578 spread on the same certified stone. NZ Jewellers lists it at $7,522. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1493188319
Dimensions6.39 × 6.36 × 3.99 mm
L/W Ratio1.00
Star length45%
Lower girdle75%
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
6.39 mm6.36 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1493188319
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.6%

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: $7,522 AUD|Low: $2,507 AUD|High: $7,522 AUD|Avg: $4,109 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 10$3,008 AUD
Retailer 9$3,014 AUD
Retailer 3$3,260 AUD
Retailer 13$3,260 AUD
Retailer 5$3,264 AUD
Retailer 12$3,410 AUD
Retailer 4$3,761 AUD
Retailer 2$3,784 AUD
Retailer 11$4,030 AUD
Retailer 6$4,236 AUD
Retailer 7$4,391 AUD
Retailer 8$6,304 AUD
NZ Jewellers$7,522 AUD

43 data points across 13 retailers

19 retailers$2,944 AUD to $7,522 AUD

B+
Cheapest Retailer
-
$2,944 AUD
B+
Retailer 2
-
$3,008 AUD
View
Final sale: no returns
B+
Retailer 3
-
$3,014 AUD
View
B+
Retailer 4
-
$3,144 AUD
View
B+
Retailer 5
-
$3,260 AUD
View
Retailer 6
-
$3,260 AUD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$3,264 AUD
View
B+
Retailer 8
-
$3,331 AUD
View
B
Retailer 9
-
$3,410 AUD
View
B+
Retailer 10
-
$3,527 AUD
View
B
Retailer 11
-
$3,761 AUD
View
B
Retailer 12
-
$3,780 AUD
View
B+
Retailer 13
-
$3,784 AUD
View
B
Retailer 14
-
$3,810 AUD
View
Retailer 15
-
$4,030 AUD
View
Price last confirmed 30 days ago
B
Retailer 16
-
$4,236 AUD
View
B
Retailer 17
-
$4,391 AUD
View
B
Retailer 18
-
$6,304 AUD
View
Most Expensive
B
NZ Jewellers
e7966b03-233a-4eb6-86cc-9d4bdb3f2631 · Nov 5
$7,522 AUD
$5,266 USD
View
18 more retailers have this diamond
Prices start from $2,944 AUDSave up to $4,578 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.

B+
1.00ct Round
$2,944 AUD