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Oval|Natural|GIA

1.50ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 2564543888

Certificate GIA 2564543888

Diamond specifications and retailer prices

From $6,241 AUD
As of November 6, 2026
Save $7,388 AUD (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $13,628 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural oval diamond

This 1.5ct natural oval sits in the one-and-a-half to two 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 2564543888. Listed at 22 retailers as of November 5, 2026, with prices from $6,241 to $13,628, a $7,388 spread on the same certified stone. NZ Jewellers lists it at $13,628. 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

1.50
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle41.92°
Pavilion angle38.57°
OriginNatural
Grading LabGIA
CertificateGIA 2564543888
Dimensions8.42 × 6.04 × 3.97 mm
L/W Ratio1.39
Culet sizeLarge
Key to symbols
Twinning Wisp, Crystal, Indented Natural
Top View
8.42 mm6.04 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2564543888
Side View
Table 53.0%Crown 41.92°Girdle: THK-ETKPavilion 38.57°Culet: LargeDepth 65.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $13,628 AUD|Low: $6,184 AUD|High: $13,628 AUD|Avg: $8,827 AUD
NZ Jewellers
Retailer 2
Retailer 3
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Retailer 12
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Retailer 22
November 6, 2026
Retailer 20$6,241 AUD
Retailer 2$6,302 AUD
Retailer 3$6,877 AUD
Retailer 8$6,957 AUD
Retailer 12$7,107 AUD
Retailer 18$7,193 AUD
Retailer 22$7,472 AUD
Retailer 10$7,619 AUD
Retailer 16$7,824 AUD
Retailer 14$7,935 AUD
Retailer 4$8,149 AUD
Retailer 6$8,149 AUD
Retailer 21$8,149 AUD
Retailer 9$8,371 AUD
Retailer 5$8,517 AUD
Retailer 13$9,169 AUD
Retailer 11$9,402 AUD
Retailer 17$9,942 AUD
Retailer 7$11,843 AUD
Retailer 15$12,174 AUD
Retailer 19$12,943 AUD
NZ Jewellers$13,628 AUD

24 data points across 22 retailers

22 retailers$6,241 AUD to $13,628 AUD

B+
Cheapest Retailer
-
$6,241 AUD
B+
Retailer 2
-
$6,302 AUD
View
Retailer 3
-
$6,877 AUD
View
Price last confirmed 16 days ago
B+
Retailer 4
-
$6,957 AUD
View
B+
Retailer 5
-
$7,107 AUD
View
B+
Retailer 6
-
$7,193 AUD
View
B+
Retailer 7
-
$7,472 AUD
View
B
Retailer 8
-
$7,619 AUD
View
B
Retailer 9
-
$7,824 AUD
View
Retailer 10
-
$7,935 AUD
View
Price last confirmed 22 days ago
B
Retailer 11
-
$8,149 AUD
View
Retailer 12
-
$8,149 AUD
View
Price last confirmed 8 days ago
B
Retailer 13
-
$8,149 AUD
View
B
Retailer 14
-
$8,371 AUD
View
B
Retailer 15
-
$8,517 AUD
View
B
Retailer 16
-
$9,169 AUD
View
B
Retailer 17
-
$9,402 AUD
View
B
Retailer 18
-
$9,942 AUD
View
B
Retailer 19
-
$11,843 AUD
View
B
Retailer 20
-
$12,174 AUD
View
B
Retailer 21
-
$12,943 AUD
View
Most Expensive
C
NZ Jewellers
6472b515-dd9f-4a76-be3e-566085752808 · Nov 5
$13,628 AUD
$9,364 USD
View
21 more retailers have this diamond
Prices start from $6,241 AUDSave up to $7,388 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.

B+
1.50ct Oval
$6,241 AUD