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Round|Natural|HRD

1.00ct J SI1 Round Natural Diamond

EX • J/SI1 • HRD 260000116770

Certificate HRD 260000116770

Diamond specifications and retailer prices

From $1,618 AUD
As of November 6, 2026
Save $3,636 AUD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,254 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 HRD 260000116770. Listed at 15 retailers as of November 5, 2026, with prices from $1,618 to $5,254, a $3,636 spread on the same certified stone. NZ Jewellers lists it at $5,254. 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
FluorescenceNone
Crown angle36.6°
Pavilion angle40.8°
OriginNatural
Grading LabHRD
CertificateHRD 260000116770
Dimensions6.34 × 6.39 × 4.01 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.34 mm6.39 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 260000116770
Side View
Table 56.0%Crown 36.6°Girdle: MED-MEDPavilion 40.8°Culet: NoneDepth 62.9%

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: $5,254 AUD|Low: $1,618 AUD|High: $5,390 AUD|Avg: $2,703 AUD|-2.5%
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
Retailer 14
November 6, 2026
Retailer 2$1,618 AUD
Retailer 9$1,974 AUD
Retailer 4$1,987 AUD
Retailer 12$2,016 AUD
Retailer 5$2,154 AUD
Retailer 13$2,253 AUD
Retailer 7$2,416 AUD
Retailer 3$2,486 AUD
Retailer 8$2,511 AUD
Retailer 11$2,808 AUD
Retailer 6$3,104 AUD
Retailer 14$3,556 AUD
Retailer 10$3,764 AUD
NZ Jewellers$5,254 AUD

34 data points across 14 retailers

15 retailers$1,618 AUD to $5,254 AUD

A
Cheapest Retailer
-
$1,618 AUD
A
Retailer 2
-
$1,974 AUD
View
A
Retailer 3
-
$1,987 AUD
View
Final sale: no returns
A
Retailer 4
-
$2,016 AUD
View
A
Retailer 5
-
$2,154 AUD
View
A
Retailer 6
-
$2,253 AUD
View
B+
Retailer 7
-
$2,403 AUD
View
A
Retailer 8
-
$2,416 AUD
View
B+
Retailer 9
-
$2,486 AUD
View
A
Retailer 10
-
$2,511 AUD
View
B+
Retailer 11
-
$2,808 AUD
View
B+
Retailer 12
-
$3,104 AUD
View
B
Retailer 13
-
$3,556 AUD
View
B
Retailer 14
-
$3,764 AUD
View
Most Expensive
B
NZ Jewellers
09ec0cc1-6dc2-4b6c-825e-9b34c40caf83 · Nov 5
$5,254 AUD
$3,678 USD
View
14 more retailers have this diamond
Prices start from $1,618 AUDSave up to $3,636 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
$1,618 AUD