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Round|Natural|GIA

1.00ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 6555755456

Certificate GIA 6555755456

Diamond specifications and retailer prices

From $3,028 NZD
As of November 4, 2026
Save $4,040 NZD (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,814 NZD at NZ Jewellers · As of October 23, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6555755456. Listed at 11 retailers as of November 2, 2026, with a 133% 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6555755456
Dimensions6.39 × 6.43 × 3.92 mm
L/W Ratio1.01
Girdle conditionMedium to Slightly Thick
Key to symbols
Crystal, Feather, Indented Natural, Needle, Natural
Top View
6.39 mm6.43 mm1.00 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555755456
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.1%

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: $4,209 NZD|Low: $3,005 NZD|High: $7,475 NZD|Avg: $4,438 NZD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6$3,028 NZD
Retailer 4$3,047 NZD
Retailer 8$3,222 NZD
Retailer 7$3,665 NZD
Retailer 1$4,209 NZD
Retailer 9$4,410 NZD
Retailer 2$4,999 NZD
Retailer 3$5,185 NZD
Retailer 5$7,068 NZD

40 data points across 9 retailers

11 retailers$3,028 NZD to $7,068 NZD

A
Cheapest Retailer
-
$3,028 NZD
A
Retailer 2
-
$3,047 NZD
View
A
Retailer 3
-
$3,222 NZD
View
Final sale: no returns
A
Retailer 4
-
$3,665 NZD
View
A
Retailer 5
-
$4,209 NZD
View
Retailer 6
-
$4,216 NZD
View
Price last confirmed 15 days ago
Retailer 7
-
$4,410 NZD
View
Price last confirmed 15 days ago
A
Retailer 8
-
$4,999 NZD
View
A
Retailer 9
-
$5,185 NZD
View
B+
Retailer 10
-
$7,068 NZD
View
Most Expensive
NZ Jewellers
83845f9a-386a-4a0e-abd3-cfe0c8a65282 · Oct 23
$8,814 NZD
$4,955 USD
View
Price last confirmed 13 days ago
10 more retailers have this diamond
Prices start from $3,028 NZDSave up to $4,040 NZD

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
$3,028 NZD