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Oval|Natural|GIA

1.40ct K SI1 Oval Natural Diamond

ID • K/SI1 • GIA 5553967650

Certificate GIA 5553967650

Diamond specifications and retailer prices

From $3,078 AUD
As of November 6, 2026
Save $3,967 AUD (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,817 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.4ct natural oval diamond

This 1.4ct 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 5553967650. Listed at 16 retailers as of November 4, 2026, with a 129% 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

1.40
Carat
K
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553967650
Dimensions8.87 × 6.31 × 3.67 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Knot, Indented Natural, Needle, Natural
Top View
8.87 mm6.31 mm1.40 ctK / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5553967650
Side View
Table 58.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 58.1%

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: $3,078 AUD|Low: $3,078 AUD|High: $7,271 AUD|Avg: $4,366 AUD|-4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 1$3,078 AUD
Retailer 4$3,537 AUD
Retailer 10$3,602 AUD
Retailer 11$3,716 AUD
Retailer 3$3,721 AUD
Retailer 5$3,911 AUD
Retailer 2$3,959 AUD
Retailer 12$4,238 AUD
Retailer 7$4,267 AUD
Retailer 6$4,692 AUD
Retailer 8$4,921 AUD
Retailer 9$7,046 AUD

23 data points across 12 retailers

16 retailers$3,078 AUD to $7,046 AUD

A
Cheapest Retailer
-
$3,078 AUD
A
Retailer 2
-
$3,537 AUD
View
A
Retailer 3
-
$3,602 AUD
View
A
Retailer 4
-
$3,716 AUD
View
B+
Retailer 5
-
$3,721 AUD
View
Final sale: no returns
A
Retailer 6
-
$3,911 AUD
View
A
Retailer 7
-
$3,959 AUD
View
Retailer 8
-
$4,106 AUD
View
Price last confirmed 30 days ago
B+
Retailer 9
-
$4,238 AUD
View
B+
Retailer 10
-
$4,267 AUD
View
Retailer 11
-
$4,379 AUD
View
Price last confirmed 38 days ago
B+
Retailer 12
-
$4,692 AUD
View
Retailer 13
-
$4,737 AUD
View
Price last confirmed 30 days ago
B+
Retailer 14
-
$4,921 AUD
View
B
Retailer 15
-
$7,046 AUD
View
Most Expensive
NZ Jewellers
d546049e-de6e-41fb-9a1f-20a641474722 · Sep 30
$8,817 AUD
$6,058 USD
View
Price last confirmed 37 days ago
15 more retailers have this diamond
Prices start from $3,078 AUDSave up to $3,967 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
1.40ct Oval
$3,078 AUD