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Round|Natural|GIA

1.51ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 6561676300

Certificate GIA 6561676300

Diamond specifications and retailer prices

From $3,200 AUD
As of November 6, 2026
Save $5,781 AUD (64%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,981 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct 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 6561676300. Listed at 13 retailers as of November 5, 2026, with prices from $3,200 to $8,981, a $5,781 spread on the same certified stone. NZ Jewellers lists it at $8,981. 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

1.51
Carat
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6561676300
Dimensions7.24 × 7.30 × 4.62 mm
L/W Ratio1.01
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Twinning Wisp, Feather, Needle, Natural
Top View
7.24 mm7.30 mm1.51 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6561676300
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 63.5%

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: $8,981 AUD|Low: $3,200 AUD|High: $8,981 AUD|Avg: $4,802 AUD|+15.0%
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
November 6, 2026
Retailer 11$3,200 AUD
Retailer 9$3,847 AUD
Retailer 4$3,864 AUD
Retailer 5$4,126 AUD
Retailer 8$4,295 AUD
Retailer 10$4,461 AUD
Retailer 3$4,484 AUD
Retailer 6$4,498 AUD
Retailer 13$4,811 AUD
Retailer 12$4,957 AUD
Retailer 7$4,988 AUD
Retailer 2$5,670 AUD
NZ Jewellers$8,981 AUD

12 data points across 13 retailers

13 retailers$3,200 AUD to $8,981 AUD

A
Cheapest Retailer
-
$3,200 AUD
B+
Retailer 2
-
$3,847 AUD
View
B+
Retailer 3
-
$3,864 AUD
View
B+
Retailer 4
-
$4,126 AUD
View
B+
Retailer 5
-
$4,295 AUD
View
B+
Retailer 6
-
$4,461 AUD
View
Retailer 7
-
$4,484 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$4,498 AUD
View
B+
Retailer 9
-
$4,811 AUD
View
B+
Retailer 10
-
$4,957 AUD
View
B+
Retailer 11
-
$4,988 AUD
View
B
Retailer 12
-
$5,670 AUD
View
Most Expensive
C
NZ Jewellers
16af0689-024b-484a-978b-e88b7ce78d30 · Nov 5
$8,981 AUD
$6,287 USD
View
12 more retailers have this diamond
Prices start from $3,200 AUDSave up to $5,781 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
1.51ct Round
$3,200 AUD