Round|Natural|GIA

1.00ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6435180932

Certificate GIA 6435180932

Diamond specifications and retailer prices

From $3,733 AUD
As of November 6, 2026
Save $4,283 AUD (53%) vs most expensive(unlock to see where)
34 retailers carry this diamond
Most expensive: $8,015 AUD at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6435180932. Listed at 34 retailers as of November 5, 2026, with a 115% 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle33°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6435180932
Dimensions6.48 × 6.42 × 3.90 mm
L/W Ratio1.01
Top View
6.48 mm6.42 mm1.00 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6435180932
Side View
Table 62.0%Crown 33°Girdle: MediumPavilion 41.2°Culet: NoneDepth 60.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,731 AUD|Low: $3,786 AUD|High: $7,785 AUD|Avg: $5,448 AUD|-0.4%
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 9$3,786 AUD
Retailer 3$3,847 AUD
Retailer 12$4,168 AUD
Retailer 5$4,398 AUD
Retailer 2$4,727 AUD
Retailer 1$4,731 AUD
Retailer 4$4,933 AUD
Retailer 6$5,343 AUD
Retailer 8$5,351 AUD
Retailer 7$5,615 AUD
Retailer 11$7,620 AUD
Retailer 10$7,694 AUD

36 data points across 12 retailers

34 retailers$3,733 AUD to $8,015 AUD

A
Cheapest Retailer
-
$3,733 AUD
A
Retailer 2
-
$3,786 AUD
View
A
Retailer 3
-
$3,847 AUD
View
Final sale: no returns
A
Retailer 4
-
$4,071 AUD
View
Retailer 5
-
$4,168 AUD
View
Price last confirmed 50 days ago
Retailer 6
-
$4,168 AUD
View
Price last confirmed 28 days ago
Retailer 7
-
$4,168 AUD
View
Price last confirmed 8 days ago
Retailer 8
-
$4,168 AUD
View
Price last confirmed 21 days ago
Retailer 9
-
$4,168 AUD
View
Price last confirmed 15 days ago
B+
Retailer 10
-
$4,208 AUD
View
Retailer 11
-
$4,328 AUD
View
Price last confirmed 38 days ago
A
Retailer 12
-
$4,398 AUD
View
B+
Retailer 13
-
$4,557 AUD
View
B+
Retailer 14
-
$4,557 AUD
View
B+
Retailer 15
-
$4,714 AUD
View
B+
Retailer 16
-
$4,727 AUD
View
Retailer 17
-
$4,727 AUD
View
Price last confirmed 28 days ago
B+
Retailer 18
-
$4,731 AUD
View
Retailer 19
-
$4,810 AUD
View
Price last confirmed 28 days ago
Retailer 20
-
$4,810 AUD
View
Price last confirmed 45 days ago
Retailer 21
-
$4,810 AUD
View
Price last confirmed 16 days ago
B+
Retailer 22
-
$4,810 AUD
View
Retailer 23
-
$4,933 AUD
View
Price last confirmed 33 days ago
B+
Retailer 24
-
$5,124 AUD
View
Retailer 25
-
$5,337 AUD
View
Price last confirmed 22 days ago
B+
Retailer 26
-
$5,343 AUD
View
B+
Retailer 27
-
$5,351 AUD
View
B+
Retailer 28
-
$5,615 AUD
View
Retailer 29
-
$7,620 AUD
View
Price last confirmed 9 days ago
B
Retailer 30
-
$7,694 AUD
View
B
Retailer 31
-
$8,015 AUD
View
Retailer 32
-
$8,015 AUD
View
Price last confirmed 39 days ago
Retailer 33
-
$8,015 AUD
View
Price last confirmed 48 days ago
Most Expensive
NZ Jewellers
8b22a2a6-3c47-4f47-b165-e8d03f8bd461 · Oct 20
$8,015 AUD
$5,611 USD
View
Price last confirmed 16 days ago
33 more retailers have this diamond
Prices start from $3,733 AUDSave up to $4,283 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
$3,733 AUD