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Round|Natural|GIA

1.50ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 6501366436

Certificate GIA 6501366436

Diamond specifications and retailer prices

From $3,071 AUD
As of November 6, 2026
Save $5,140 AUD (63%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,211 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6501366436. Listed at 15 retailers as of November 5, 2026, with prices from $3,071 to $8,211, a $5,140 spread on the same certified stone. NZ Jewellers lists it at $8,211. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6501366436
Dimensions7.26 × 7.30 × 4.57 mm
L/W Ratio1.01
Star length55%
Lower girdle75%
Top View
7.26 mm7.30 mm1.50 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6501366436
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.8%

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: $8,211 AUD|Low: $3,034 AUD|High: $8,211 AUD|Avg: $4,330 AUD
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
November 6, 2026
Retailer 11$3,071 AUD
Retailer 9$3,123 AUD
Retailer 6$3,517 AUD
Retailer 4$3,857 AUD
Retailer 3$3,927 AUD
Retailer 13$3,927 AUD
Retailer 15$3,927 AUD
Retailer 14$4,078 AUD
Retailer 12$4,128 AUD
Retailer 2$4,276 AUD
Retailer 5$4,531 AUD
Retailer 10$4,784 AUD
Retailer 8$4,793 AUD
Retailer 7$5,940 AUD
NZ Jewellers$8,211 AUD

35 data points across 15 retailers

15 retailers$3,071 AUD to $8,211 AUD

A
Cheapest Retailer
-
$3,071 AUD
A
Retailer 2
-
$3,123 AUD
View
A
Retailer 3
-
$3,517 AUD
View
B+
Retailer 4
-
$3,857 AUD
View
Retailer 5
-
$3,927 AUD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$3,927 AUD
View
B+
Retailer 7
-
$3,927 AUD
View
B+
Retailer 8
-
$4,078 AUD
View
B+
Retailer 9
-
$4,128 AUD
View
B+
Retailer 10
-
$4,276 AUD
View
B+
Retailer 11
-
$4,531 AUD
View
B+
Retailer 12
-
$4,784 AUD
View
B+
Retailer 13
-
$4,793 AUD
View
B
Retailer 14
-
$5,940 AUD
View
Most Expensive
C
NZ Jewellers
7b91fc11-c002-403c-bb64-d19130b7a9df · Nov 5
$8,211 AUD
$5,748 USD
View
14 more retailers have this diamond
Prices start from $3,071 AUDSave up to $5,140 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 Round
$3,071 AUD