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Oval|Natural|GIA

1.30ct K SI1 Oval Natural Diamond

ID • K/SI1 • GIA 1553104097

Certificate GIA 1553104097

Diamond specifications and retailer prices

From $2,431 AUD
As of November 5, 2026
Save $1,975 AUD (45%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,151 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.3ct natural oval diamond

This 1.3ct natural oval 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 stated by the retailer rather than the lab and certified by GIA 1553104097. Listed at 10 retailers as of November 4, 2026, with a 81% 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

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

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1553104097
Dimensions8.37 × 6.20 × 4.02 mm
L/W Ratio1.35
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather
Top View
8.37 mm6.20 mm1.30 ctK / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1553104097
Side View
Table 64.0%CrownGirdlePavilionCulet: NoneDepth 64.8%

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 5
Current: $3,077 AUD|Low: $2,431 AUD|High: $4,471 AUD|Avg: $3,230 AUD|+2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 5$2,431 AUD
Retailer 2$2,800 AUD
Retailer 1$3,077 AUD
Retailer 4$3,442 AUD
Retailer 3$4,405 AUD

42 data points across 5 retailers

10 retailers$2,431 AUD to $4,405 AUD

A
Cheapest Retailer
-
$2,431 AUD
Retailer 2
-
$2,522 AUD
View
Price last confirmed 29 days ago
Retailer 3
-
$2,522 AUD
View
Price last confirmed 29 days ago
Retailer 4
-
$2,639 AUD
View
Price last confirmed 38 days ago
A
Retailer 5
-
$2,800 AUD
View
Retailer 6
-
$2,909 AUD
View
Price last confirmed 38 days ago
A
Retailer 7
-
$3,077 AUD
View
B+
Retailer 8
-
$3,442 AUD
View
B+
Retailer 9
-
$4,405 AUD
View
Most Expensive
NZ Jewellers
39b0773f-84dc-4e53-aede-334677bc49cd · Sep 30
$6,151 AUD
$4,226 USD
View
Price last confirmed 37 days ago
9 more retailers have this diamond
Prices start from $2,431 AUDSave up to $1,975 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
1.30ct Oval
$2,431 AUD