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Round|Natural|GIA

1.51ct N SI1 Round Natural Diamond

EX • N/SI1 • GIA 1465591279

Certificate GIA 1465591279

Diamond specifications and retailer prices

From £1,883 GBP
As of November 5, 2026
Save £2,096 GBP (53%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,979 GBP 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 N colour (tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1465591279. Listed at 10 retailers as of November 5, 2026, with prices from £1,883 to £3,979, a £2,096 spread on the same certified stone. NZ Jewellers lists it at £3,979. 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
FluorescenceNone
Crown angle32.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1465591279
Dimensions7.32 × 7.37 × 4.55 mm
L/W Ratio1.01
Star length55%
Lower girdle75%
Cert comments
Pinpoints are not shown.
Key to symbols
Crystal
Top View
7.32 mm7.37 mm1.51 ctN / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1465591279
Side View
Table 59.0%Crown 32.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £3,979 GBP|Low: £1,883 GBP|High: £4,193 GBP|Avg: £2,537 GBP|-5.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 9£1,883 GBP
Retailer 6£1,904 GBP
Retailer 8£1,904 GBP
Retailer 7£1,991 GBP
Retailer 5£2,008 GBP
Retailer 10£2,196 GBP
Retailer 4£2,323 GBP
Retailer 2£2,359 GBP
Retailer 11£2,887 GBP
Retailer 3£3,505 GBP
NZ Jewellers£3,979 GBP

27 data points across 11 retailers

10 retailers£1,883 GBP to £3,979 GBP

B+
Cheapest Retailer
-
£1,883 GBP
B+
Retailer 2
-
£1,904 GBP
View
Retailer 3
-
£1,904 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£1,991 GBP
View
B+
Retailer 5
-
£2,008 GBP
View
B+
Retailer 6
-
£2,196 GBP
View
B+
Retailer 7
-
£2,323 GBP
View
B+
Retailer 8
-
£2,359 GBP
View
B
Retailer 9
-
£2,887 GBP
View
Most Expensive
C
NZ Jewellers
56d8278c-31ff-4446-a58b-c5b81d160973 · Nov 5
£3,979 GBP
$5,356 USD
View
9 more retailers have this diamond
Prices start from £1,883 GBPSave up to £2,096 GBP

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
£1,883 GBP