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Round|Natural|GIA

1.00ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 5406598535

Certificate GIA 5406598535

Diamond specifications and retailer prices

From $3,510 AUD
As of October 31, 2026
Save $6,155 AUD (64%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $9,665 AUD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

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 5406598535. Listed at 21 retailers as of October 31, 2026, with prices from $3,510 to $9,665, a $6,155 spread on the same certified stone. Diamond Quarter lists it at $9,665. 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
SymmetryVery Good
FluorescenceMedium
Crown angle32.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5406598535
Dimensions6.54 × 6.52 × 3.88 mm
L/W Ratio1.00
Top View
6.54 mm6.52 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5406598535
Side View
Table 58.0%Crown 32.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.4%

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: Oct 31
Current: $4,665 AUD|Low: $3,501 AUD|High: $8,535 AUD|Avg: $5,073 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 12$3,510 AUD
Retailer 2$3,566 AUD
Retailer 10$4,400 AUD
Retailer 3$4,435 AUD
Retailer 4$4,500 AUD
Retailer 1$4,665 AUD
Retailer 5$4,951 AUD
Retailer 6$5,014 AUD
Retailer 11$5,118 AUD
Retailer 7$5,951 AUD
Retailer 8$8,131 AUD
Retailer 9$8,535 AUD

29 data points across 12 retailers

21 retailers$3,510 AUD to $9,665 AUD

A
Cheapest Retailer
-
$3,510 AUD
A
Retailer 2
-
$3,566 AUD
View
A
Retailer 3
-
$4,206 AUD
View
A
Retailer 4
-
$4,400 AUD
View
B+
Retailer 5
-
$4,435 AUD
View
B+
Retailer 6
-
$4,500 AUD
View
Final sale: no returns
B+
Retailer 7
-
$4,665 AUD
View
B+
Retailer 8
-
$4,875 AUD
View
Retailer 9
-
$4,875 AUD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$4,951 AUD
View
B+
Retailer 11
-
$5,014 AUD
View
B+
Retailer 12
-
$5,063 AUD
View
B+
Retailer 13
-
$5,118 AUD
View
Retailer 14
-
$5,227 AUD
View
Price last confirmed 33 days ago
B+
Retailer 15
-
$5,625 AUD
View
B+
Retailer 16
-
$5,951 AUD
View
B
Retailer 17
-
$8,131 AUD
View
B
Retailer 18
-
$8,494 AUD
View
B
Retailer 19
-
$8,535 AUD
View
B
Retailer 20
-
$9,018 AUD
View
Most Expensive
B
Diamond Quarter
1.0SI1D5435FF5FN · Nov 5
$9,665 AUD
£5,328 GBP
View
20 more retailers have this diamond
Prices start from $3,510 AUDSave up to $6,155 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
$3,510 AUD