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Round|Natural|GIA

3.05ct K SI1 Round Natural Diamond

GD • K/SI1 • GIA 5231781775

Certificate GIA 5231781775

Diamond specifications and retailer prices

From $21,609 AUD
As of November 6, 2026
Save $8,841 AUD (29%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $30,450 AUD at Ritani · As of November 4, 2026
View at Ritani

About this 3.05ct natural round diamond

This 3.05ct natural round sits in the three to five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade and certified by GIA 5231781775. Listed at 6 retailers as of November 4, 2026, with prices from $21,609 to $30,450, a $8,841 spread on the same certified stone. Ritani lists it at $30,450. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.05
Carat
K
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryGood
FluorescenceStrong
Crown angle36°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 5231781775
Dimensions9.05 × 9.27 × 5.78 mm
L/W Ratio1.02
Top View
9.05 mm9.27 mm3.05 ctK / SI1
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceStrong
CertificateGIA 5231781775
Side View
Table 61.0%Crown 36°Girdle: STK-THKPavilion 41.8°Culet: Very SmallDepth 63.1%

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 6
Current: $25,162 AUD|Low: $21,355 AUD|High: $30,450 AUD|Avg: $25,595 AUD|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Ritani
November 6, 2026
Retailer 5$21,609 AUD
Retailer 4$22,622 AUD
Retailer 3$24,077 AUD
Retailer 1$25,162 AUD
Retailer 2$28,590 AUD
Ritani$30,450 AUD

41 data points across 6 retailers

6 retailers$21,609 AUD to $30,450 AUD

B+
Cheapest Retailer
-
$21,609 AUD
B+
Retailer 2
-
$22,622 AUD
View
B+
Retailer 3
-
$24,077 AUD
View
B+
Retailer 4
-
$25,162 AUD
View
B+
Retailer 5
-
$28,590 AUD
View
Most Expensive
B
Ritani
D-5PY649W4GF · Nov 4
$30,450 AUD
$21,316 USD
View
5 more retailers have this diamond
Prices start from $21,609 AUDSave up to $8,841 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+
3.05ct Round
$21,609 AUD