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Oval|Natural|GIA

1.50ct M SI1 Oval Natural Diamond

ID • M/SI1 • GIA 6511873729

Certificate GIA 6511873729

Diamond specifications and retailer prices

From $2,774 AUD
As of November 6, 2026
Save $3,832 AUD (58%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,606 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 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 6511873729. Listed at 11 retailers as of November 5, 2026, with prices from $2,774 to $6,606, a $3,832 spread on the same certified stone. NZ Jewellers lists it at $6,606. 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
M
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6511873729
Dimensions9.57 × 6.08 × 4.04 mm
L/W Ratio1.57
Top View
9.57 mm6.08 mm1.50 ctM / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6511873729
Side View
Table 56.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 66.4%

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: $6,606 AUD|Low: $2,774 AUD|High: $6,792 AUD|Avg: $3,698 AUD|-2.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 2$2,774 AUD
Retailer 11$2,975 AUD
Retailer 4$3,059 AUD
Retailer 3$3,160 AUD
Retailer 9$3,160 AUD
Retailer 10$3,187 AUD
Retailer 8$3,307 AUD
Retailer 6$3,544 AUD
Retailer 7$3,857 AUD
Retailer 5$4,170 AUD
NZ Jewellers$6,606 AUD

43 data points across 11 retailers

11 retailers$2,774 AUD to $6,606 AUD

A
Cheapest Retailer
-
$2,774 AUD
A
Retailer 2
-
$2,975 AUD
View
A
Retailer 3
-
$3,059 AUD
View
B+
Retailer 4
-
$3,160 AUD
View
Retailer 5
-
$3,160 AUD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$3,187 AUD
View
B+
Retailer 7
-
$3,307 AUD
View
B+
Retailer 8
-
$3,544 AUD
View
B+
Retailer 9
-
$3,857 AUD
View
B+
Retailer 10
-
$4,170 AUD
View
Most Expensive
B
NZ Jewellers
1a9c3cda-e926-45ff-bfd1-33e5176d1031 · Nov 5
$6,606 AUD
$4,539 USD
View
10 more retailers have this diamond
Prices start from $2,774 AUDSave up to $3,832 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
$2,774 AUD