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Round|Natural|GIA

3.00ct K SI1 Round Natural Diamond

EX • K/SI1

Diamond specifications and retailer prices

From $25,249 AUD
As of November 6, 2026
Save $8,027 AUD (24%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $40,471 AUD at NZ Jewellers · As of September 18, 2026
View at NZ Jewellers

About this 3ct natural round diamond

This 3ct 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. Listed at 10 retailers as of November 6, 2026, with a 32% 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

3.00
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions9.13 × 9.22 × 5.74 mm
L/W Ratio1.01
Top View
9.13 mm9.22 mm3.00 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA
Side View
Table 55.0%CrownGirdle: ThinPavilionCulet: NoneDepth 62.6%

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: $40,471 AUD|Low: $25,249 AUD|High: $40,471 AUD|Avg: $31,634 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 2$25,249 AUD
Retailer 8$28,567 AUD
Retailer 4$29,150 AUD
Retailer 3$29,833 AUD
Retailer 7$30,948 AUD
Retailer 6$32,138 AUD
Retailer 5$33,275 AUD
NZ Jewellers$40,471 AUD

3 data points across 8 retailers

10 retailers$25,249 AUD to $33,275 AUD

A
Cheapest Retailer
-
$25,249 AUD
B+
Retailer 2
-
$29,150 AUD
View
B+
Retailer 3
-
$29,833 AUD
View
Retailer 4
-
$30,948 AUD
View
Price last confirmed 56 days ago
Retailer 5
-
$30,948 AUD
View
Price last confirmed 54 days ago
Retailer 6
-
$32,138 AUD
View
Price last confirmed 50 days ago
Retailer 7
-
$32,138 AUD
View
Price last confirmed 61 days ago
B+
Retailer 8
-
$33,275 AUD
View
Retailer 9
-
$40,471 AUD
View
Price last confirmed 57 days ago
Most Expensive
NZ Jewellers
fbcfc892-9a65-4745-abd7-8d939edbbd57 · Sep 18
$40,471 AUD
$28,331 USD
View
Price last confirmed 49 days ago
9 more retailers have this diamond
Prices start from $25,249 AUDSave up to $8,027 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
3.00ct Round
$25,249 AUD