Oval|Natural|GIA

1.50ct M SI1 Oval Natural Diamond

ID • M/SI1 • GIA 6511873729

Certificate GIA 6511873729

Diamond specifications and retailer prices

From $1,906 USD
As of November 6, 2026
Save $2,633 USD (58%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,539 USD 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 $1,906 to $4,539, a $2,633 spread on the same certified stone. NZ Jewellers lists it at $4,539. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,539 USD|Low: $1,906 USD|High: $4,667 USD|Avg: $2,541 USD|-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$1,906 USD
Retailer 11$2,044 USD
Retailer 4$2,102 USD
Retailer 3$2,171 USD
Retailer 9$2,171 USD
Retailer 10$2,190 USD
Retailer 8$2,272 USD
Retailer 6$2,435 USD
Retailer 7$2,650 USD
Retailer 5$2,865 USD
NZ Jewellers$4,539 USD

43 data points across 11 retailers

11 retailers$1,906 USD to $4,539 USD

A
Cheapest Retailer
-
$1,906 USD
A
Retailer 2
-
$2,044 USD
View
A
Retailer 3
-
$2,102 USD
View
B+
Retailer 4
-
$2,171 USD
View
Retailer 5
-
$2,171 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$2,190 USD
View
B+
Retailer 7
-
$2,272 USD
View
B+
Retailer 8
-
$2,435 USD
View
B+
Retailer 9
-
$2,650 USD
View
B+
Retailer 10
-
$2,865 USD
View
Most Expensive
B
NZ Jewellers
1a9c3cda-e926-45ff-bfd1-33e5176d1031 · Nov 5
$4,539 USD
View
10 more retailers have this diamond
Prices start from $1,906 USDSave up to $2,633 USD

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
$1,906 USD