Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6445352304

Certificate GIA 6445352304

Diamond specifications and retailer prices

From $3,337 AUD
$2,344 USD
As of October 31, 2026
Save $3,871 AUD (54%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $7,508 AUD 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: $3,402 AUD|Low: $3,108 AUD|High: $7,295 AUD|Avg: $4,732 AUD|-5.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 1$3,402 AUD
Retailer 9$3,496 AUD
Retailer 10$3,603 AUD
Retailer 3$4,147 AUD
Retailer 8$4,427 AUD
Retailer 6$4,581 AUD
Retailer 2$4,604 AUD
Retailer 5$4,725 AUD
Retailer 7$5,297 AUD
Retailer 4$7,208 AUD

35 data points across 10 retailers

25 retailers$3,337 AUD to $7,208 AUD

A
Cheapest Retailer
-
$3,337 AUD
$2,344 USD
B+
Retailer 2
-
$3,402 AUD
$2,390 USD
View
B+
Retailer 3
-
$3,425 AUD
$2,406 USD
View
B+
Retailer 4
-
$3,496 AUD
$2,456 USD
View
B+
Retailer 5
-
$3,587 AUD
$2,520 USD
View
B+
Retailer 6
-
$3,603 AUD
$2,531 USD
View
Final sale: no returns
B+
Retailer 7
-
$3,618 AUD
View
B+
Retailer 8
-
$3,837 AUD
$2,695 USD
View
Retailer 9
-
$3,905 AUD
$2,743 USD
View
Price last confirmed 20 days ago
Retailer 10
-
$3,905 AUD
$2,743 USD
View
Price last confirmed 23 days ago
B+
Retailer 11
-
$3,954 AUD
$2,777 USD
View
Retailer 12
-
$4,054 AUD
$2,848 USD
View
Price last confirmed 16 days ago
B+
Retailer 13
-
$4,147 AUD
£2,294 GBP
View
B
Retailer 14
-
$4,427 AUD
$3,110 USD
View
B
Retailer 15
-
$4,456 AUD
$3,130 USD
View
B
Retailer 16
-
$4,456 AUD
$3,130 USD
View
Retailer 17
-
$4,506 AUD
$3,165 USD
View
Price last confirmed 22 days ago
B
Retailer 18
-
$4,581 AUD
£2,534 GBP
View
B
Retailer 19
-
$4,598 AUD
$3,230 USD
View
Retailer 20
-
$4,604 AUD
View
Price last confirmed 24 days ago
B
Retailer 21
-
$4,725 AUD
€3,161 EUR
View
Retailer 22
-
$5,004 AUD
$3,515 USD
View
Price last confirmed 17 days ago
B
Retailer 23
-
$5,297 AUD
ZAR 60,116 ZAR
View
B
Retailer 24
-
$7,208 AUD
£3,987 GBP
View
Most Expensive
NZ Jewellers
5b7c1452-920d-407a-a1bd-0f029b656fa7 · Sep 27
$7,508 AUD
$5,274 USD
View
Price last confirmed 35 days ago
24 more retailers have this diamond
Prices start from $3,337 AUDSave up to $3,871 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
$3,337 AUD