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Round|Natural|GIA

1.04ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1545806558

Certificate GIA 1545806558

Diamond specifications and retailer prices

From $3,703 AUD
As of November 5, 2026
Save $754 AUD (17%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $4,457 AUD at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.04ct natural round diamond

This 1.04ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1545806558. Listed at 4 retailers as of November 5, 2026, with prices from $3,703 to $4,457, a $754 spread on the same certified stone. Blue Nile lists it at $4,457. 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

1.04
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1545806558
Dimensions6.46 × 6.49 × 4.05 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather
Top View
6.46 mm6.49 mm1.04 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545806558
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $4,457 AUD|Low: $3,591 AUD|High: $4,595 AUD|Avg: $4,143 AUD|-1.8%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4$3,703 AUD
Retailer 2$3,977 AUD
Retailer 3$4,257 AUD
Blue Nile$4,457 AUD

37 data points across 4 retailers

4 retailers$3,703 AUD to $4,457 AUD

B+
Cheapest Retailer
-
$3,703 AUD
B+
Retailer 2
-
$3,977 AUD
View
B
Retailer 3
-
$4,257 AUD
View
Most Expensive
B
Blue Nile
28515650 · Nov 5
$4,457 AUD
$3,120 USD
View
3 more retailers have this diamond
Prices start from $3,703 AUDSave up to $754 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.

B+
1.04ct Round
$3,703 AUD