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Round|Natural|GIA

1.05ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2556452598

Certificate GIA 2556452598

Diamond specifications and retailer prices

From $3,117 NZD
As of November 6, 2026
Save $4,133 NZD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $8,929 NZD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.05ct natural round diamond

This 1.05ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556452598. Listed at 20 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

1.05
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2556452598
Dimensions6.46 × 6.50 × 4.06 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.46 mm6.50 mm1.05 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556452598
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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: $4,319 NZD|Low: $3,117 NZD|High: $7,571 NZD|Avg: $4,386 NZD|-1.0%
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
November 6, 2026
Retailer 16$3,117 NZD
Retailer 5$3,173 NZD
Retailer 4$3,444 NZD
Retailer 11$3,548 NZD
Retailer 15$3,550 NZD
Retailer 2$3,776 NZD
Retailer 13$3,819 NZD
Retailer 6$4,089 NZD
Retailer 8$4,183 NZD
Retailer 1$4,319 NZD
Retailer 9$4,515 NZD
Retailer 10$4,753 NZD
Retailer 7$4,825 NZD
Retailer 14$4,872 NZD
Retailer 12$6,005 NZD
Retailer 3$7,250 NZD

30 data points across 16 retailers

20 retailers$3,117 NZD to $7,250 NZD

A
Cheapest Retailer
-
$3,117 NZD
Retailer 2
-
$3,173 NZD
View
Price last confirmed 17 days ago
Retailer 3
-
$3,444 NZD
View
Price last confirmed 11 days ago
A
Retailer 4
-
$3,548 NZD
View
A
Retailer 5
-
$3,550 NZD
View
A
Retailer 6
-
$3,776 NZD
View
A
Retailer 7
-
$3,819 NZD
View
Final sale: no returns
Retailer 8
-
$4,183 NZD
View
Price last confirmed 17 days ago
A
Retailer 9
-
$4,230 NZD
View
A
Retailer 10
-
$4,319 NZD
View
Retailer 11
-
$4,468 NZD
View
Price last confirmed 22 days ago
B+
Retailer 12
-
$4,515 NZD
View
B+
Retailer 13
-
$4,753 NZD
View
Retailer 14
-
$4,825 NZD
View
Price last confirmed 19 days ago
B+
Retailer 15
-
$4,872 NZD
View
Retailer 16
-
$4,928 NZD
View
Price last confirmed 48 days ago
B+
Retailer 17
-
$6,005 NZD
View
B
Retailer 18
-
$7,250 NZD
View
Retailer 19
-
$8,929 NZD
View
Price last confirmed 20 days ago
Most Expensive
NZ Jewellers
05f53ec0-77c7-4a2a-a7d4-89ef61e356d8 · Sep 19
$8,929 NZD
$4,950 USD
View
Price last confirmed 47 days ago
19 more retailers have this diamond
Prices start from $3,117 NZDSave up to $4,133 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
1.05ct Round
$3,117 NZD