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Oval|Natural|GIA

0.90ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 2556659597

Certificate GIA 2556659597

Diamond specifications and retailer prices

From $875 AUD
As of November 6, 2026
Save $2,915 AUD (77%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,908 AUD at NZ Jewellers · As of October 14, 2026
View at NZ Jewellers

About this 0.9ct natural oval diamond

This 0.9ct natural oval sits in the just-under-one-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 2556659597. Listed at 20 retailers as of November 2, 2026, with a 333% 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

0.90
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556659597
Dimensions7.37 × 5.52 × 3.37 mm
L/W Ratio1.34
Top View
7.37 mm5.52 mm0.90 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556659597
Side View
Table 55.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 60.9%

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 6
Current: $3,790 AUD|Low: $875 AUD|High: $3,908 AUD|Avg: $1,631 AUD|-3.0%
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 5, 2026
Retailer 13$875 AUD
Retailer 2$1,164 AUD
Retailer 11$1,188 AUD
Retailer 4$1,208 AUD
Retailer 6$1,208 AUD
Retailer 5$1,255 AUD
Retailer 10$1,291 AUD
Retailer 8$1,317 AUD
Retailer 14$1,351 AUD
Retailer 9$1,364 AUD
Retailer 7$1,371 AUD
Retailer 16$1,394 AUD
Retailer 3$1,402 AUD
Retailer 17$1,706 AUD
Retailer 18$1,770 AUD
Retailer 15$2,141 AUD
Retailer 12$2,247 AUD
NZ Jewellers$3,790 AUD

27 data points across 18 retailers

20 retailers$875 AUD to $3,790 AUD

A
Cheapest Retailer
-
$875 AUD
A
Retailer 2
-
$1,164 AUD
View
A
Retailer 3
-
$1,188 AUD
View
Retailer 4
-
$1,208 AUD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$1,208 AUD
View
Retailer 6
-
$1,246 AUD
View
Price last confirmed 23 days ago
A
Retailer 7
-
$1,255 AUD
View
Retailer 8
-
$1,291 AUD
View
Price last confirmed 10 days ago
A
Retailer 9
-
$1,317 AUD
View
A
Retailer 10
-
$1,351 AUD
View
A
Retailer 11
-
$1,364 AUD
View
A
Retailer 12
-
$1,371 AUD
View
A
Retailer 13
-
$1,394 AUD
View
A
Retailer 14
-
$1,402 AUD
View
B+
Retailer 15
-
$1,706 AUD
View
B+
Retailer 16
-
$1,770 AUD
View
B+
Retailer 17
-
$2,141 AUD
View
B+
Retailer 18
-
$2,247 AUD
View
B
Retailer 19
-
$3,790 AUD
View
Most Expensive
NZ Jewellers
d30260a8-da44-4d58-bc63-da6f6745199f · Oct 14
$3,908 AUD
$2,685 USD
View
Price last confirmed 23 days ago
19 more retailers have this diamond
Prices start from $875 AUDSave up to $2,915 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
0.90ct Oval
$875 AUD