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Round|Natural|GIA

1.50ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 5516507747

Certificate GIA 5516507747

Diamond specifications and retailer prices

From $3,867 AUD
As of November 5, 2026
Save $5,161 AUD (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $9,028 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5516507747. Listed at 13 retailers as of November 5, 2026, with prices from $3,867 to $9,028, a $5,161 spread on the same certified stone. NZ Jewellers lists it at $9,028. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5516507747
Dimensions7.26 × 7.29 × 4.48 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
7.26 mm7.29 mm1.50 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5516507747
Side View
Table 60.0%Crown 35°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 61.6%

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 5
Current: $9,028 AUD|Low: $2,640 AUD|High: $9,028 AUD|Avg: $4,701 AUD|+19.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 7$3,304 AUD
Retailer 10$3,867 AUD
Retailer 6$3,986 AUD
Retailer 9$3,986 AUD
Retailer 3$4,318 AUD
Retailer 11$4,318 AUD
Retailer 8$4,484 AUD
Retailer 12$4,521 AUD
Retailer 4$4,983 AUD
Retailer 5$5,017 AUD
Retailer 2$5,700 AUD
NZ Jewellers$9,028 AUD

41 data points across 12 retailers

13 retailers$3,867 AUD to $9,028 AUD

Retailer 1
-
$3,304 AUD
Price last confirmed 9 days ago
B+
Retailer 2
-
$3,867 AUD
View
B+
Retailer 3
-
$3,986 AUD
View
B+
Retailer 4
-
$3,986 AUD
View
Final sale: no returns
Retailer 5
-
$4,034 AUD
View
Price last confirmed 68 days ago
B+
Retailer 6
-
$4,318 AUD
View
Retailer 7
-
$4,318 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$4,484 AUD
View
B+
Retailer 9
-
$4,521 AUD
View
B
Retailer 10
-
$4,983 AUD
View
B
Retailer 11
-
$5,017 AUD
View
B
Retailer 12
-
$5,700 AUD
View
Most Expensive
C
NZ Jewellers
46d3eabe-5e72-44fe-9fa0-2accdc5cbdc9 · Nov 5
$9,028 AUD
$6,320 USD
View
12 more retailers have this diamond
Prices start from $3,867 AUDSave up to $5,161 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 Round
$3,867 AUD