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Oval|Natural|GIA

1.50ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 7551728271

Certificate GIA 7551728271

Diamond specifications and retailer prices

From $3,203 AUD
As of November 6, 2026
Save $5,762 AUD (64%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $9,041 AUD at NZ Jewellers · As of August 30, 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 7551728271. Listed at 21 retailers as of November 5, 2026, with a 180% 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551728271
Dimensions8.72 × 6.32 × 3.99 mm
L/W Ratio1.38
Top View
8.72 mm6.32 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7551728271
Side View
Table 60.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 63.1%

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: $8,965 AUD|Low: $3,203 AUD|High: $8,965 AUD|Avg: $4,783 AUD|+13.2%
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
Retailer 19
November 6, 2026
Retailer 7$3,203 AUD
Retailer 5$3,681 AUD
Retailer 8$3,682 AUD
Retailer 3$3,839 AUD
Retailer 11$4,075 AUD
Retailer 2$4,160 AUD
Retailer 19$4,192 AUD
Retailer 17$4,289 AUD
Retailer 10$4,417 AUD
Retailer 13$4,443 AUD
Retailer 6$4,454 AUD
Retailer 12$4,494 AUD
Retailer 18$4,539 AUD
Retailer 16$4,614 AUD
Retailer 9$4,948 AUD
Retailer 14$4,992 AUD
Retailer 15$5,234 AUD
Retailer 4$7,152 AUD
NZ Jewellers$8,965 AUD

23 data points across 19 retailers

21 retailers$3,203 AUD to $8,965 AUD

A
Cheapest Retailer
-
$3,203 AUD
A
Retailer 2
-
$3,681 AUD
View
A
Retailer 3
-
$3,682 AUD
View
A
Retailer 4
-
$3,839 AUD
View
A
Retailer 5
-
$4,075 AUD
View
A
Retailer 6
-
$4,160 AUD
View
A
Retailer 7
-
$4,192 AUD
View
A
Retailer 8
-
$4,289 AUD
View
Retailer 9
-
$4,417 AUD
View
Price last confirmed 8 days ago
A
Retailer 10
-
$4,443 AUD
View
A
Retailer 11
-
$4,454 AUD
View
A
Retailer 12
-
$4,494 AUD
View
A
Retailer 13
-
$4,539 AUD
View
Retailer 14
-
$4,545 AUD
View
Price last confirmed 23 days ago
A
Retailer 15
-
$4,614 AUD
View
A
Retailer 16
-
$4,948 AUD
View
A
Retailer 17
-
$4,992 AUD
View
A
Retailer 18
-
$5,234 AUD
View
B+
Retailer 19
-
$7,152 AUD
View
B
Retailer 20
-
$8,965 AUD
View
Most Expensive
NZ Jewellers
b65d4127-8da9-4d77-a258-9453db5cf266 · Aug 30
$9,041 AUD
$6,212 USD
View
Price last confirmed 68 days ago
20 more retailers have this diamond
Prices start from $3,203 AUDSave up to $5,762 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
1.50ct Oval
$3,203 AUD