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1.51ct N SI1 Round Natural Diamond

EX • N/SI1 • GIA 1242031872

Certificate GIA 1242031872

Diamond specifications and retailer prices

From $3,501 SGD
As of November 6, 2026
Save $591 SGD (14%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,092 SGD 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 $3,501 to $4,092, a $591 spread on the same certified stone. Yorxs lists it at $4,092. 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: $3,501 SGD|Low: $3,501 SGD|High: $4,142 SGD|Avg: $3,807 SGD
Retailer 1
Yorxs
November 5, 2026
Retailer 1$3,501 SGD
Yorxs$4,092 SGD

12 data points across 2 retailers

2 retailers$3,501 SGD to $4,092 SGD

B+
Cheapest Retailer
-
$3,501 SGD
Most Expensive
B
Yorxs
615647296 · Nov 5
$4,092 SGD
€3,051 EUR
View
1 more retailer has this diamond
Prices start from $3,501 SGDSave up to $591 SGD

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
$3,501 SGD