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1.51ct N SI1 Round Natural Diamond

EX • N/SI1 • GIA 6511004011

Certificate GIA 6511004011

Diamond specifications and retailer prices

From $8,398 NZD
€4,496 EUR
As of November 5, 2026
1 retailer carries this diamond
Only listing: $8,398 NZD at Yorxs
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
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 6511004011. Listed at a single retailer as of November 5, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6511004011
Dimensions7.25 × 7.33 × 4.60 mm
L/W Ratio1.01
Star length45%
Lower girdle80%
Girdle conditionFaceted
Key to symbols
Feather, Crystal, Twinning Wisp, Cloud, Indented Natural
Top View
7.25 mm7.33 mm1.51 ctN / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6511004011
Side View
Table 55.0%Crown 36.5°Girdle: STK-MEDPavilion 40.6°Culet: NoneDepth 63.1%

Caratlytics Score

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C
Average
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Price History

Last verified: Nov 5
Current: $8,398 NZD|Low: $8,243 NZD|High: $8,502 NZD|Avg: $8,398 NZD|+1.8%
November 5, 2026
Yorxs$8,398 NZD

22 data points across 1 retailer

1 retailer

C
Yorxs
501356801 · Nov 5
$8,398 NZD
€4,496 EUR
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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.

C
1.51ct Round
$8,398 NZD