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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 $3,438 NZD
As of November 6, 2026
Save $4,750 NZD (58%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,188 NZD 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 $3,438 to $8,188, a $4,750 spread on the same certified stone. NZ Jewellers lists it at $8,188. 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: $8,188 NZD|Low: $3,438 NZD|High: $8,419 NZD|Avg: $4,583 NZD|-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$3,438 NZD
Retailer 11$3,687 NZD
Retailer 4$3,792 NZD
Retailer 3$3,916 NZD
Retailer 9$3,916 NZD
Retailer 10$3,951 NZD
Retailer 8$4,098 NZD
Retailer 6$4,392 NZD
Retailer 7$4,780 NZD
Retailer 5$5,168 NZD
NZ Jewellers$8,188 NZD

43 data points across 11 retailers

11 retailers$3,438 NZD to $8,188 NZD

A
Cheapest Retailer
-
$3,438 NZD
A
Retailer 2
-
$3,687 NZD
View
A
Retailer 3
-
$3,792 NZD
View
B+
Retailer 4
-
$3,916 NZD
View
Retailer 5
-
$3,916 NZD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$3,951 NZD
View
B+
Retailer 7
-
$4,098 NZD
View
B+
Retailer 8
-
$4,392 NZD
View
B+
Retailer 9
-
$4,780 NZD
View
B+
Retailer 10
-
$5,168 NZD
View
Most Expensive
B
NZ Jewellers
1a9c3cda-e926-45ff-bfd1-33e5176d1031 · Nov 5
$8,188 NZD
$4,539 USD
View
10 more retailers have this diamond
Prices start from $3,438 NZDSave up to $4,750 NZD

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
$3,438 NZD