CaratHunter
Plans
Round|Natural|GIA

1.00ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1558301284

Certificate GIA 1558301284

Diamond specifications and retailer prices

From $4,131 AUD
As of November 4, 2026
Save $5,015 AUD (55%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $9,528 AUD at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1558301284. Listed at 24 retailers as of November 2, 2026, with a 121% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1558301284
Dimensions6.31 × 6.37 × 3.99 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Natural
Top View
6.31 mm6.37 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1558301284
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.0%

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 4
Current: $4,813 AUD|Low: $4,131 AUD|High: $9,244 AUD|Avg: $6,013 AUD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 9$4,131 AUD
Retailer 6$4,314 AUD
Retailer 1$4,813 AUD
Retailer 2$4,921 AUD
Retailer 11$5,048 AUD
Retailer 5$5,558 AUD
Retailer 3$5,864 AUD
Retailer 4$6,375 AUD
Retailer 8$6,723 AUD
Retailer 10$8,335 AUD
Retailer 7$9,147 AUD

33 data points across 11 retailers

24 retailers$4,131 AUD to $9,147 AUD

A
Cheapest Retailer
-
$4,131 AUD
A
Retailer 2
-
$4,314 AUD
View
B+
Retailer 3
-
$4,813 AUD
View
Retailer 4
-
$4,903 AUD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$4,921 AUD
View
B+
Retailer 6
-
$5,020 AUD
View
B+
Retailer 7
-
$5,021 AUD
View
B+
Retailer 8
-
$5,048 AUD
View
Final sale: no returns
Retailer 9
-
$5,203 AUD
View
Price last confirmed 11 days ago
Retailer 10
-
$5,470 AUD
View
Price last confirmed 29 days ago
Retailer 11
-
$5,470 AUD
View
Price last confirmed 44 days ago
B+
Retailer 12
-
$5,485 AUD
View
B+
Retailer 13
-
$5,558 AUD
View
B+
Retailer 14
-
$5,678 AUD
View
Retailer 15
-
$5,680 AUD
View
Price last confirmed 38 days ago
Retailer 16
-
$5,864 AUD
View
Price last confirmed 33 days ago
Retailer 17
-
$6,311 AUD
View
Price last confirmed 38 days ago
Retailer 18
-
$6,311 AUD
View
Price last confirmed 45 days ago
B+
Retailer 19
-
$6,375 AUD
View
B+
Retailer 20
-
$6,723 AUD
View
Retailer 21
-
$8,335 AUD
View
Price last confirmed 9 days ago
B
Retailer 22
-
$9,147 AUD
View
Retailer 23
-
$9,528 AUD
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
2a98d147-13bb-42ca-b8ab-d57a36d34597 · Sep 21
$9,528 AUD
$6,670 USD
View
Price last confirmed 45 days ago
23 more retailers have this diamond
Prices start from $4,131 AUDSave up to $5,015 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
$4,131 AUD