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Round|Natural|GIA

1.39ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 5513024356

Shape and cutting style on the report: Round brilliant

Certificate GIA 5513024356

Diamond specifications and retailer prices

From $3,493 AUD
As of November 5, 2026
Save $2,851 AUD (45%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,590 AUD at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.39ct natural round diamond

This 1.39ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5513024356. Listed at 10 retailers as of November 4, 2026, with a 82% 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

1.39
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5513024356
Dimensions7.08 × 7.12 × 4.45 mm
L/W Ratio1.01
Star length45%
Lower girdle80%
Top View
7.08 mm7.12 mm1.39 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5513024356
Side View
Table 56.0%Crown 36°Girdle: THN-MEDPavilion 40.6°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $3,818 AUD|Low: $3,493 AUD|High: $6,511 AUD|Avg: $4,522 AUD|-0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 5$3,493 AUD
Retailer 1$3,818 AUD
Retailer 3$4,431 AUD
Retailer 2$4,500 AUD
Retailer 4$6,344 AUD

43 data points across 5 retailers

10 retailers$3,493 AUD to $6,344 AUD

A
Cheapest Retailer
-
$3,493 AUD
Retailer 2
-
$3,630 AUD
View
Price last confirmed 29 days ago
Retailer 3
-
$3,630 AUD
View
Price last confirmed 29 days ago
Retailer 4
-
$3,798 AUD
View
Price last confirmed 38 days ago
A
Retailer 5
-
$3,818 AUD
View
Retailer 6
-
$4,188 AUD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$4,431 AUD
View
B+
Retailer 8
-
$4,500 AUD
View
B
Retailer 9
-
$6,344 AUD
View
Most Expensive
NZ Jewellers
4d4d3ac1-287e-499c-bdab-c1af1402e004 · Sep 26
$7,590 AUD
$5,313 USD
View
Price last confirmed 40 days ago
9 more retailers have this diamond
Prices start from $3,493 AUDSave up to $2,851 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
1.39ct Round
$3,493 AUD