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Radiant|Natural|GIA

1.30ct K SI1 Radiant Natural Diamond

GD • K/SI1 • GIA 3145961771

Certificate GIA 3145961771

Diamond specifications and retailer prices

From $5,094 AUD
As of November 4, 2026
Save $6,337 AUD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $11,431 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.3ct natural radiant diamond

This 1.3ct natural radiant 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 3145961771. Listed at 16 retailers as of November 4, 2026, with prices from $5,094 to $11,431, a $6,337 spread on the same certified stone. NZ Jewellers lists it at $11,431. 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

1.30
Carat
K
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3145961771
Dimensions7.07 × 5.85 × 3.79 mm
L/W Ratio1.21
Top View
7.07 mm5.85 mm1.30 ctK / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 3145961771
Side View
Table 70.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 64.8%

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 4
Current: $11,431 AUD|Low: $5,094 AUD|High: $11,431 AUD|Avg: $7,439 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 6$5,094 AUD
Retailer 7$5,944 AUD
Retailer 8$5,944 AUD
Retailer 9$5,944 AUD
Retailer 2$6,647 AUD
Retailer 3$6,979 AUD
Retailer 4$8,005 AUD
Retailer 5$10,422 AUD
NZ Jewellers$11,431 AUD

44 data points across 9 retailers

16 retailers$5,094 AUD to $11,431 AUD

B+
Cheapest Retailer
-
$5,094 AUD
B+
Retailer 2
-
$5,170 AUD
View
B+
Retailer 3
-
$5,229 AUD
View
B
Retailer 4
-
$5,583 AUD
View
B
Retailer 5
-
$5,662 AUD
View
Retailer 6
-
$5,944 AUD
View
Price last confirmed 9 days ago
B
Retailer 7
-
$5,944 AUD
View
B
Retailer 8
-
$5,944 AUD
View
B
Retailer 9
-
$6,471 AUD
View
B
Retailer 10
-
$6,647 AUD
View
B
Retailer 11
-
$6,859 AUD
View
B
Retailer 12
-
$6,979 AUD
View
Retailer 13
-
$7,421 AUD
View
Price last confirmed 15 days ago
C
Retailer 14
-
$8,005 AUD
View
C
Retailer 15
-
$10,422 AUD
View
Most Expensive
C
NZ Jewellers
83b19d72-471c-404d-b302-2a75dd820de4 · Nov 5
$11,431 AUD
$7,854 USD
View
15 more retailers have this diamond
Prices start from $5,094 AUDSave up to $6,337 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+
1.30ct Radiant
$5,094 AUD