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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 $2,861 AUD
HK$15,700 HKD
As of October 31, 2026
Save $5,034 AUD (64%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $7,895 AUD 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 $2,861 to $7,895, a $5,034 spread on the same certified stone. NZ Jewellers lists it at $7,895. 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: Oct 31
Current: $7,895 AUD|Low: $2,733 AUD|High: $7,895 AUD|Avg: $4,004 AUD|+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 19$2,861 AUD
Retailer 12$2,925 AUD
Retailer 4$3,029 AUD
Retailer 7$3,089 AUD
Retailer 5$3,158 AUD
Retailer 11$3,158 AUD
Retailer 15$3,300 AUD
Retailer 21$3,410 AUD
Retailer 16$3,421 AUD
Retailer 14$3,452 AUD
Retailer 9$3,644 AUD
Retailer 20$3,728 AUD
Retailer 6$3,929 AUD
Retailer 8$3,929 AUD
Retailer 22$3,948 AUD
Retailer 13$4,012 AUD
Retailer 10$4,057 AUD
Retailer 3$4,429 AUD
Retailer 17$4,620 AUD
Retailer 18$4,642 AUD
Retailer 2$6,615 AUD
NZ Jewellers$7,895 AUD

17 data points across 22 retailers

23 retailers$2,861 AUD to $7,895 AUD

A
Cheapest Retailer
-
$2,861 AUD
HK$15,700 HKD
A
Retailer 2
-
$2,925 AUD
$2,055 USD
View
A
Retailer 3
-
$3,029 AUD
$2,128 USD
View
A
Retailer 4
-
$3,089 AUD
$2,170 USD
View
A
Retailer 5
-
$3,158 AUD
$2,218 USD
View
Final sale: no returns
A
Retailer 6
-
$3,158 AUD
$2,218 USD
View
A
Retailer 7
-
$3,300 AUD
$2,318 USD
View
A
Retailer 8
-
$3,410 AUD
$2,395 USD
View
B+
Retailer 9
-
$3,421 AUD
$2,403 USD
View
A
Retailer 10
-
$3,452 AUD
$2,425 USD
View
B+
Retailer 11
-
$3,644 AUD
£2,016 GBP
View
B+
Retailer 12
-
$3,728 AUD
$2,619 USD
View
B+
Retailer 13
-
$3,929 AUD
$2,760 USD
View
B+
Retailer 14
-
$3,929 AUD
$2,760 USD
View
B+
Retailer 15
-
$3,948 AUD
$2,773 USD
View
B+
Retailer 16
-
$4,012 AUD
£2,219 GBP
View
B+
Retailer 17
-
$4,057 AUD
$2,850 USD
View
Retailer 18
-
$4,280 AUD
View
Price last confirmed 24 days ago
B+
Retailer 19
-
$4,429 AUD
€2,963 EUR
View
B+
Retailer 20
-
$4,620 AUD
$3,245 USD
View
B+
Retailer 21
-
$4,642 AUD
ZAR 52,674 ZAR
View
B
Retailer 22
-
$6,615 AUD
£3,659 GBP
View
Most Expensive
B
NZ Jewellers
7330d7c4-5473-4174-83b5-06070554d291 · Oct 30
$7,895 AUD
$5,546 USD
View
22 more retailers have this diamond
Prices start from $2,861 AUDSave up to $5,034 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
$2,861 AUD