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Round|Natural|GIA

1.51ct N SI1 Round Natural Diamond

EX • N/SI1 • GIA 1242031872

Certificate GIA 1242031872

Diamond specifications and retailer prices

From $3,916 AUD
As of November 6, 2026
Save $661 AUD (14%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,576 AUD at Yorxs · As of November 5, 2026
View at Yorxs

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded N colour (tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1242031872. Listed at 2 retailers as of November 5, 2026, with prices from $3,916 to $4,576, a $661 spread on the same certified stone. Yorxs lists it at $4,576. 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
N
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1242031872
Dimensions7.34 × 7.28 × 4.58 mm
L/W Ratio1.01
Key to symbols
Feather, Crystal, Needle, Pinpoint
Top View
7.34 mm7.28 mm1.51 ctN / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1242031872
Side View
Table 58.0%CrownGirdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: $3,916 AUD|Low: $3,916 AUD|High: $4,632 AUD|Avg: $4,257 AUD
Retailer 1
Yorxs
November 5, 2026
Retailer 1$3,916 AUD
Yorxs$4,576 AUD

12 data points across 2 retailers

2 retailers$3,916 AUD to $4,576 AUD

B+
Cheapest Retailer
-
$3,916 AUD
Most Expensive
B
Yorxs
615647296 · Nov 5
$4,576 AUD
€3,051 EUR
View
1 more retailer has this diamond
Prices start from $3,916 AUDSave up to $661 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+
1.51ct Round
$3,916 AUD