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Oval|Natural|GIA

1.28ct M SI1 Oval Natural Diamond

ID • M/SI1 • GIA 6445428290

Certificate GIA 6445428290

Diamond specifications and retailer prices

From $1,956 AUD
As of November 6, 2026
Save $4,502 AUD (70%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,458 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.28ct natural oval diamond

This 1.28ct natural oval sits in the one-and-a-quarter to one-and-a-half carat band, graded M 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 6445428290. Listed at 12 retailers as of November 5, 2026, with prices from $1,956 to $6,458, a $4,502 spread on the same certified stone. NZ Jewellers lists it at $6,458. 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

1.28
Carat
M
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6445428290
Dimensions8.30 × 5.71 × 3.95 mm
L/W Ratio1.45
Top View
8.30 mm5.71 mm1.28 ctM / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6445428290
Side View
Table 56.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 69.2%

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: $6,458 AUD|Low: $1,937 AUD|High: $6,548 AUD|Avg: $3,063 AUD|-1.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 7$1,956 AUD
Retailer 3$2,417 AUD
Retailer 5$2,596 AUD
Retailer 8$2,647 AUD
Retailer 11$2,647 AUD
Retailer 4$2,684 AUD
Retailer 9$2,729 AUD
Retailer 13$2,770 AUD
Retailer 10$2,847 AUD
Retailer 12$3,055 AUD
Retailer 6$3,231 AUD
Retailer 2$3,595 AUD
NZ Jewellers$6,458 AUD

32 data points across 13 retailers

12 retailers$1,956 AUD to $6,458 AUD

A
Cheapest Retailer
-
$1,956 AUD
A
Retailer 2
-
$2,417 AUD
View
Retailer 3
-
$2,647 AUD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$2,647 AUD
View
B+
Retailer 5
-
$2,684 AUD
View
B+
Retailer 6
-
$2,729 AUD
View
B+
Retailer 7
-
$2,770 AUD
View
B+
Retailer 8
-
$2,847 AUD
View
B+
Retailer 9
-
$3,055 AUD
View
B+
Retailer 10
-
$3,231 AUD
View
B
Retailer 11
-
$3,595 AUD
View
Most Expensive
B
NZ Jewellers
0aa3f585-1d3d-4c76-8aa9-2cace6c3caa2 · Nov 5
$6,458 AUD
$4,437 USD
View
11 more retailers have this diamond
Prices start from $1,956 AUDSave up to $4,502 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
1.28ct Oval
$1,956 AUD