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Round|Natural|GIA

1.00ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1435831747

Certificate GIA 1435831747

Diamond specifications and retailer prices

From $4,143 AUD
As of November 6, 2026
Save $6,039 AUD (59%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $10,182 AUD at Diamond Quarter · As of November 6, 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 1435831747. Listed at 28 retailers as of November 6, 2026, with prices from $4,143 to $10,182, a $6,039 spread on the same certified stone. Diamond Quarter lists it at $10,182. 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 angle33°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1435831747
Dimensions6.55 × 6.47 × 3.82 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Key to symbols
Crystal, Feather, Cavity, Needle, Natural
Top View
6.55 mm6.47 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1435831747
Side View
Table 61.0%Crown 33°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 58.6%

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: $6,050 AUD|Low: $3,833 AUD|High: $9,607 AUD|Avg: $5,691 AUD|+5.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 14
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Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 5, 2026
Retailer 5$4,143 AUD
Retailer 6$4,236 AUD
Retailer 20$4,328 AUD
Retailer 11$4,434 AUD
Retailer 16$4,527 AUD
Retailer 13$4,610 AUD
Retailer 7$4,807 AUD
Retailer 3$4,995 AUD
Retailer 8$4,995 AUD
Retailer 4$5,187 AUD
Retailer 21$5,433 AUD
Retailer 19$5,550 AUD
Retailer 17$5,684 AUD
Retailer 10$5,764 AUD
Retailer 23$5,771 AUD
Retailer 24$5,771 AUD
Retailer 14$5,931 AUD
Retailer 2$5,957 AUD
Retailer 1$6,050 AUD
Retailer 15$6,243 AUD
Retailer 18$6,340 AUD
Retailer 12$6,730 AUD
Retailer 22$9,221 AUD
Retailer 9$9,607 AUD

37 data points across 24 retailers

28 retailers$4,143 AUD to $10,182 AUD

A
Cheapest Retailer
-
$4,143 AUD
A
Retailer 2
-
$4,236 AUD
View
A
Retailer 3
-
$4,328 AUD
View
B+
Retailer 4
-
$4,434 AUD
View
B+
Retailer 5
-
$4,527 AUD
View
B+
Retailer 6
-
$4,590 AUD
View
B+
Retailer 7
-
$4,610 AUD
View
Final sale: no returns
B+
Retailer 8
-
$4,807 AUD
View
Retailer 9
-
$4,995 AUD
View
Price last confirmed 15 days ago
Retailer 10
-
$4,995 AUD
View
Price last confirmed 13 days ago
Retailer 11
-
$5,187 AUD
View
Price last confirmed 15 days ago
Retailer 12
-
$5,227 AUD
View
Price last confirmed 25 days ago
B+
Retailer 13
-
$5,433 AUD
View
Retailer 14
-
$5,433 AUD
View
Price last confirmed 8 days ago
B+
Retailer 15
-
$5,550 AUD
View
Retailer 16
-
$5,684 AUD
View
Price last confirmed 29 days ago
Retailer 17
-
$5,764 AUD
View
Price last confirmed 14 days ago
B
Retailer 18
-
$5,771 AUD
View
B
Retailer 19
-
$5,771 AUD
View
B+
Retailer 20
-
$5,931 AUD
View
B+
Retailer 21
-
$5,957 AUD
View
B+
Retailer 22
-
$6,050 AUD
View
Retailer 23
-
$6,243 AUD
View
Price last confirmed 14 days ago
B+
Retailer 24
-
$6,340 AUD
View
B
Retailer 25
-
$6,730 AUD
View
B
Retailer 26
-
$9,221 AUD
View
Retailer 27
-
$9,607 AUD
View
Price last confirmed 14 days ago
Most Expensive
B
Diamond Quarter
1.0SI1D1447F491N · Nov 6
$10,182 AUD
£5,612 GBP
View
27 more retailers have this diamond
Prices start from $4,143 AUDSave up to $6,039 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
$4,143 AUD