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Oval|Natural|GIA

1.28ct K SI1 Oval Natural Diamond

VG • K/SI1 • GIA 2547992369

Certificate GIA 2547992369

Diamond specifications and retailer prices

From $1,546 AUD
As of November 1, 2026
Save $1,336 AUD (46%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,212 AUD at NZ Jewellers · As of October 14, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2547992369. Listed at 20 retailers as of November 1, 2026, with a 86% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.28
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2547992369
Dimensions9.11 × 5.75 × 3.59 mm
L/W Ratio1.58
Top View
9.11 mm5.75 mm1.28 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2547992369
Side View
Table 60.0%CrownGirdle: Very ThickPavilionCulet: NDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $5,047 AUD|Low: $1,527 AUD|High: $5,378 AUD|Avg: $2,569 AUD|-6.1%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 13$1,546 AUD
Retailer 6$1,917 AUD
Retailer 2$2,017 AUD
Retailer 4$2,070 AUD
Retailer 18$2,070 AUD
Retailer 5$2,103 AUD
Retailer 3$2,166 AUD
Retailer 10$2,205 AUD
Retailer 14$2,212 AUD
Retailer 17$2,266 AUD
Retailer 7$2,294 AUD
Retailer 12$2,307 AUD
Retailer 8$2,388 AUD
Retailer 15$2,525 AUD
Retailer 16$2,714 AUD
Retailer 11$2,882 AUD
Retailer 9$3,748 AUD
NZ Jewellers$5,047 AUD

26 data points across 18 retailers

20 retailers$1,546 AUD to $2,882 AUD

A
Cheapest Retailer
-
$1,546 AUD
A
Retailer 2
-
$1,917 AUD
View
A
Retailer 3
-
$2,017 AUD
View
Retailer 4
-
$2,070 AUD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$2,070 AUD
View
A
Retailer 6
-
$2,103 AUD
View
Retailer 7
-
$2,166 AUD
View
Price last confirmed 8 days ago
Retailer 8
-
$2,205 AUD
View
Price last confirmed 10 days ago
Retailer 9
-
$2,212 AUD
View
Price last confirmed 4 days ago
A
Retailer 10
-
$2,266 AUD
View
A
Retailer 11
-
$2,294 AUD
View
A
Retailer 12
-
$2,307 AUD
View
A
Retailer 13
-
$2,388 AUD
View
A
Retailer 14
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$2,525 AUD
View
Retailer 15
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$2,621 AUD
View
Price last confirmed 69 days ago
A
Retailer 16
-
$2,714 AUD
View
A
Retailer 17
-
$2,882 AUD
View
Retailer 18
-
$3,748 AUD
View
Price last confirmed 12 days ago
Retailer 19
-
$5,047 AUD
View
Price last confirmed 7 days ago
Most Expensive
NZ Jewellers
54abf051-94da-4bff-b19f-2a1e8249a491 · Oct 14
$5,212 AUD
$3,581 USD
View
Price last confirmed 23 days ago
19 more retailers have this diamond
Prices start from $1,546 AUDSave up to $1,336 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
$1,546 AUD