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Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1423768522

Certificate GIA 1423768522

Diamond specifications and retailer prices

From $3,566 NZD
HK$15,700 HKD
As of November 1, 2026
Save $6,275 NZD (64%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $9,840 NZD at NZ Jewellers · As of October 30, 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 1423768522. Listed at 23 retailers as of October 30, 2026, with prices from $3,566 to $9,840, a $6,275 spread on the same certified stone. NZ Jewellers lists it at $9,840. 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
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1423768522
Dimensions6.36 × 6.39 × 3.95 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.36 mm6.39 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1423768522
Side View
Table 60.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°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: Nov 1
Current: $9,840 NZD|Low: $3,407 NZD|High: $9,840 NZD|Avg: $4,994 NZD|+0.7%
NZ Jewellers
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
Retailer 20
Retailer 21
Retailer 22
November 1, 2026
Retailer 22$3,566 NZD
Retailer 13$3,770 NZD
Retailer 6$3,776 NZD
Retailer 9$3,850 NZD
Retailer 7$3,935 NZD
Retailer 12$3,935 NZD
Retailer 15$4,113 NZD
Retailer 4$4,249 NZD
Retailer 19$4,264 NZD
Retailer 14$4,303 NZD
Retailer 16$4,529 NZD
Retailer 3$4,647 NZD
Retailer 8$4,897 NZD
Retailer 10$4,897 NZD
Retailer 5$4,920 NZD
Retailer 18$5,001 NZD
Retailer 11$5,057 NZD
Retailer 2$5,496 NZD
Retailer 20$5,758 NZD
Retailer 21$5,785 NZD
Retailer 17$8,245 NZD
NZ Jewellers$9,840 NZD

16 data points across 22 retailers

23 retailers$3,566 NZD to $9,840 NZD

A
Cheapest Retailer
-
$3,566 NZD
HK$15,700 HKD
A
Retailer 2
-
$3,770 NZD
$2,125 USD
View
A
Retailer 3
-
$3,776 NZD
$2,128 USD
View
A
Retailer 4
-
$3,850 NZD
$2,170 USD
View
A
Retailer 5
-
$3,935 NZD
$2,218 USD
View
Final sale: no returns
A
Retailer 6
-
$3,935 NZD
$2,218 USD
View
A
Retailer 7
-
$4,113 NZD
$2,318 USD
View
A
Retailer 8
-
$4,249 NZD
$2,395 USD
View
B+
Retailer 9
-
$4,264 NZD
$2,403 USD
View
A
Retailer 10
-
$4,303 NZD
$2,425 USD
View
B+
Retailer 11
-
$4,529 NZD
£2,010 GBP
View
B+
Retailer 12
-
$4,647 NZD
$2,619 USD
View
B+
Retailer 13
-
$4,897 NZD
$2,760 USD
View
B+
Retailer 14
-
$4,897 NZD
$2,760 USD
View
B+
Retailer 15
-
$4,920 NZD
$2,773 USD
View
B+
Retailer 16
-
$5,001 NZD
£2,219 GBP
View
B+
Retailer 17
-
$5,057 NZD
$2,850 USD
View
Retailer 18
-
$5,334 NZD
A$4,625 AUD
View
Price last confirmed 25 days ago
B+
Retailer 19
-
$5,496 NZD
€2,950 EUR
View
B+
Retailer 20
-
$5,758 NZD
$3,245 USD
View
B+
Retailer 21
-
$5,785 NZD
ZAR 52,674 ZAR
View
B
Retailer 22
-
$8,245 NZD
£3,659 GBP
View
Most Expensive
B
NZ Jewellers
7330d7c4-5473-4174-83b5-06070554d291 · Oct 30
$9,840 NZD
$5,546 USD
View
22 more retailers have this diamond
Prices start from $3,566 NZDSave up to $6,275 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
$3,566 NZD