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Round|Natural|GIA

3.09ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1487892279

Certificate GIA 1487892279

Diamond specifications and retailer prices

From $35,405 AUD
As of November 5, 2026
Save $10,741 AUD (23%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $46,146 AUD at The Diamond Guys · As of November 6, 2026
View at The Diamond Guys

About this 3.09ct natural round diamond

This 3.09ct natural round sits in the three to five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1487892279. Listed at 8 retailers as of November 5, 2026, with prices from $35,405 to $46,146, a $10,741 spread on the same certified stone. The Diamond Guys lists it at $46,146. 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

3.09
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1487892279
Dimensions9.34 × 9.26 × 5.77 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Girdle conditionFaceted
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
9.34 mm9.26 mm3.09 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1487892279
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.3%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $45,892 AUD|Low: $35,405 AUD|High: $46,141 AUD|Avg: $40,452 AUD|+1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 3$35,405 AUD
Retailer 2$38,412 AUD
Retailer 4$41,364 AUD
Retailer 1$45,892 AUD

44 data points across 4 retailers

8 retailers$35,405 AUD to $46,146 AUD

B+
Cheapest Retailer
-
$35,405 AUD
B+
Retailer 2
-
$36,444 AUD
View
B+
Retailer 3
-
$38,412 AUD
View
B
Retailer 4
-
$39,894 AUD
View
B
Retailer 5
-
$40,598 AUD
View
B
Retailer 6
-
$41,364 AUD
View
B
Retailer 7
-
$45,892 AUD
View
Most Expensive
B
The Diamond Guys
1917986942 · Nov 6
$46,146 AUD
$32,304 USD
View
7 more retailers have this diamond
Prices start from $35,405 AUDSave up to $10,741 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+
3.09ct Round
$35,405 AUD