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Round|Natural|GIA

1.51ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6492695970

Certificate GIA 6492695970

Diamond specifications and retailer prices

From $7,478 AUD
As of November 4, 2026
Save $9,057 AUD (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $16,535 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6492695970. Listed at 18 retailers as of November 4, 2026, with prices from $7,478 to $16,535, a $9,057 spread on the same certified stone. NZ Jewellers lists it at $16,535. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle32°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6492695970
Dimensions7.45 × 7.42 × 4.48 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
7.45 mm7.42 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6492695970
Side View
Table 58.0%Crown 32°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.4%

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 4
Current: $16,535 AUD|Low: $7,177 AUD|High: $16,535 AUD|Avg: $9,961 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
November 6, 2026
Retailer 10$7,478 AUD
Retailer 14$7,592 AUD
Retailer 12$7,811 AUD
Retailer 5$8,268 AUD
Retailer 3$8,825 AUD
Retailer 6$8,957 AUD
Retailer 11$8,957 AUD
Retailer 13$8,957 AUD
Retailer 2$9,325 AUD
Retailer 8$10,125 AUD
Retailer 7$10,235 AUD
Retailer 4$10,898 AUD
Retailer 9$14,525 AUD
NZ Jewellers$16,535 AUD

43 data points across 14 retailers

18 retailers$7,478 AUD to $16,535 AUD

A
Cheapest Retailer
-
$7,478 AUD
A
Retailer 2
-
$7,592 AUD
View
A
Retailer 3
-
$7,811 AUD
View
B+
Retailer 4
-
$8,117 AUD
View
B+
Retailer 5
-
$8,268 AUD
View
Final sale: no returns
B+
Retailer 6
-
$8,825 AUD
View
B+
Retailer 7
-
$8,957 AUD
View
Retailer 8
-
$8,957 AUD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$8,957 AUD
View
B+
Retailer 10
-
$9,325 AUD
View
B+
Retailer 11
-
$9,828 AUD
View
B+
Retailer 12
-
$9,828 AUD
View
B+
Retailer 13
-
$10,125 AUD
View
B
Retailer 14
-
$10,157 AUD
View
B
Retailer 15
-
$10,235 AUD
View
Retailer 16
-
$10,898 AUD
View
Price last confirmed 14 days ago
B
Retailer 17
-
$14,525 AUD
View
Most Expensive
B
NZ Jewellers
a8bcc0aa-6120-4e93-99b0-72c672bdba76 · Nov 5
$16,535 AUD
$11,575 USD
View
17 more retailers have this diamond
Prices start from $7,478 AUDSave up to $9,057 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
$7,478 AUD