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Round|Natural|GIA

1.00ct E SI1 Round Natural Diamond

VG • E/SI1 • GIA 6552427355

Certificate GIA 6552427355

Diamond specifications and retailer prices

From $3,116 AUD
As of November 5, 2026
Save $4,003 AUD (56%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $7,572 AUD at NZ Jewellers · As of October 6, 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 very-good cut grade and certified by GIA 6552427355. Listed at 23 retailers as of November 4, 2026, with a 128% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle40°
OriginNatural
Grading LabGIA
CertificateGIA 6552427355
Dimensions6.17 × 6.23 × 3.99 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.17 mm6.23 mm1.00 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552427355
Side View
Table 58.0%Crown 38.5°Girdle: STK-THKPavilion 40°Culet: NDepth 64.3%

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 5
Current: $4,491 AUD|Low: $3,116 AUD|High: $7,355 AUD|Avg: $4,303 AUD|-2.0%
Retailer 1
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 6, 2026
Retailer 8$3,116 AUD
Retailer 16$3,236 AUD
Retailer 2$3,463 AUD
Retailer 9$3,508 AUD
Retailer 5$3,556 AUD
Retailer 3$3,570 AUD
Retailer 19$3,584 AUD
Retailer 18$3,807 AUD
Retailer 13$4,081 AUD
Retailer 4$4,414 AUD
Retailer 7$4,414 AUD
Retailer 1$4,491 AUD
Retailer 17$4,557 AUD
Retailer 10$4,643 AUD
Retailer 12$4,674 AUD
Retailer 11$5,045 AUD
Retailer 14$5,210 AUD
Retailer 6$5,227 AUD
Retailer 15$7,118 AUD

24 data points across 19 retailers

23 retailers$3,116 AUD to $7,118 AUD

A
Cheapest Retailer
-
$3,116 AUD
A
Retailer 2
-
$3,236 AUD
View
A
Retailer 3
-
$3,463 AUD
View
A
Retailer 4
-
$3,556 AUD
View
B+
Retailer 5
-
$3,570 AUD
View
Final sale: no returns
A
Retailer 6
-
$3,584 AUD
View
A
Retailer 7
-
$3,807 AUD
View
Retailer 8
-
$3,937 AUD
View
Price last confirmed 28 days ago
Retailer 9
-
$3,937 AUD
View
Price last confirmed 25 days ago
A
Retailer 10
-
$4,081 AUD
View
Retailer 11
-
$4,181 AUD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$4,414 AUD
View
B+
Retailer 13
-
$4,414 AUD
View
B+
Retailer 14
-
$4,491 AUD
View
Retailer 15
-
$4,544 AUD
View
Price last confirmed 28 days ago
B+
Retailer 16
-
$4,557 AUD
View
Retailer 17
-
$4,643 AUD
View
Price last confirmed 30 days ago
B+
Retailer 18
-
$4,674 AUD
View
Retailer 19
-
$5,045 AUD
View
Price last confirmed 14 days ago
B+
Retailer 20
-
$5,210 AUD
View
B+
Retailer 21
-
$5,227 AUD
View
B
Retailer 22
-
$7,118 AUD
View
Most Expensive
NZ Jewellers
f2188a06-b75c-43bc-9425-fcedfc2a0820 · Oct 6
$7,572 AUD
$5,301 USD
View
Price last confirmed 31 days ago
22 more retailers have this diamond
Prices start from $3,116 AUDSave up to $4,003 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
$3,116 AUD