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Round|Natural|GIA

1.05ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1548725237

Certificate GIA 1548725237

Diamond specifications and retailer prices

From $2,905 AUD
As of November 6, 2026
Save $5,242 AUD (64%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,147 AUD at NZ Jewellers · As of November 5, 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 1548725237. Listed at 18 retailers as of November 5, 2026, with prices from $2,905 to $8,147, a $5,242 spread on the same certified stone. NZ Jewellers lists it at $8,147. 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
SymmetryVery Good
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1548725237
Dimensions6.44 × 6.48 × 4.08 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Knot, Needle
Top View
6.44 mm6.48 mm1.05 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1548725237
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.1%

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: $3,729 AUD|Low: $2,869 AUD|High: $6,909 AUD|Avg: $4,098 AUD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8$2,905 AUD
Retailer 11$3,189 AUD
Retailer 9$3,195 AUD
Retailer 10$3,257 AUD
Retailer 3$3,694 AUD
Retailer 1$3,729 AUD
Retailer 4$4,100 AUD
Retailer 2$4,365 AUD
Retailer 7$4,381 AUD
Retailer 5$4,756 AUD
Retailer 6$6,808 AUD

41 data points across 11 retailers

18 retailers$2,905 AUD to $8,147 AUD

A
Cheapest Retailer
-
$2,905 AUD
A
Retailer 2
-
$3,189 AUD
View
A
Retailer 3
-
$3,195 AUD
View
A
Retailer 4
-
$3,257 AUD
View
Final sale: no returns
B+
Retailer 5
-
$3,531 AUD
View
Retailer 6
-
$3,531 AUD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$3,694 AUD
View
B+
Retailer 8
-
$3,729 AUD
View
B+
Retailer 9
-
$4,061 AUD
View
B+
Retailer 10
-
$4,061 AUD
View
B+
Retailer 11
-
$4,074 AUD
View
B+
Retailer 12
-
$4,100 AUD
View
B+
Retailer 13
-
$4,192 AUD
View
Retailer 14
-
$4,365 AUD
View
Price last confirmed 30 days ago
B+
Retailer 15
-
$4,381 AUD
View
B+
Retailer 16
-
$4,756 AUD
View
B
Retailer 17
-
$6,808 AUD
View
Most Expensive
B
NZ Jewellers
c21700ea-8b83-4934-b62a-871d0c649982 · Nov 5
$8,147 AUD
$5,598 USD
View
17 more retailers have this diamond
Prices start from $2,905 AUDSave up to $5,242 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
1.05ct Round
$2,905 AUD