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Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6445352304

Certificate GIA 6445352304

Diamond specifications and retailer prices

From $4,159 NZD
$2,344 USD
As of October 31, 2026
Save $4,825 NZD (54%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $9,358 NZD at NZ Jewellers · As of September 27, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct 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 6445352304. Listed at 25 retailers as of October 31, 2026, with a 116% 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6445352304
Dimensions6.40 × 6.34 × 3.93 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.40 mm6.34 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6445352304
Side View
Table 57.0%Crown 34.5°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.0%

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: Oct 31
Current: $5,662 NZD|Low: $3,873 NZD|High: $9,092 NZD|Avg: $5,891 NZD|+0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 3$4,241 NZD
Retailer 9$4,358 NZD
Retailer 10$4,491 NZD
Retailer 4$5,168 NZD
Retailer 8$5,518 NZD
Retailer 1$5,662 NZD
Retailer 2$5,738 NZD
Retailer 6$5,889 NZD
Retailer 7$6,602 NZD
Retailer 5$8,984 NZD

36 data points across 10 retailers

25 retailers$4,159 NZD to $8,984 NZD

A
Cheapest Retailer
-
$4,159 NZD
$2,344 USD
B+
Retailer 2
-
$4,241 NZD
$2,390 USD
View
B+
Retailer 3
-
$4,269 NZD
$2,406 USD
View
B+
Retailer 4
-
$4,358 NZD
$2,456 USD
View
B+
Retailer 5
-
$4,471 NZD
$2,520 USD
View
B+
Retailer 6
-
$4,491 NZD
$2,531 USD
View
Final sale: no returns
B+
Retailer 7
-
$4,509 NZD
A$3,910 AUD
View
B+
Retailer 8
-
$4,782 NZD
$2,695 USD
View
Retailer 9
-
$4,867 NZD
$2,743 USD
View
Price last confirmed 21 days ago
Retailer 10
-
$4,867 NZD
$2,743 USD
View
Price last confirmed 24 days ago
B+
Retailer 11
-
$4,928 NZD
$2,777 USD
View
Retailer 12
-
$5,053 NZD
$2,848 USD
View
Price last confirmed 17 days ago
B+
Retailer 13
-
$5,168 NZD
£2,294 GBP
View
B
Retailer 14
-
$5,518 NZD
$3,110 USD
View
B
Retailer 15
-
$5,554 NZD
$3,130 USD
View
B
Retailer 16
-
$5,554 NZD
$3,130 USD
View
Retailer 17
-
$5,616 NZD
$3,165 USD
View
Price last confirmed 23 days ago
B
Retailer 18
-
$5,662 NZD
£2,513 GBP
View
B
Retailer 19
-
$5,731 NZD
$3,230 USD
View
Retailer 20
-
$5,738 NZD
A$4,976 AUD
View
Price last confirmed 25 days ago
B
Retailer 21
-
$5,889 NZD
€3,161 EUR
View
Retailer 22
-
$6,237 NZD
$3,515 USD
View
Price last confirmed 18 days ago
B
Retailer 23
-
$6,602 NZD
ZAR 60,116 ZAR
View
B
Retailer 24
-
$8,984 NZD
£3,987 GBP
View
Most Expensive
NZ Jewellers
5b7c1452-920d-407a-a1bd-0f029b656fa7 · Sep 27
$9,358 NZD
$5,274 USD
View
Price last confirmed 36 days ago
24 more retailers have this diamond
Prices start from $4,159 NZDSave up to $4,825 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
$4,159 NZD