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Round|Natural|GIA

1.40ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2516009731

Certificate GIA 2516009731

Diamond specifications and retailer prices

From £2,560 GBP
As of November 1, 2026
Save £3,147 GBP (55%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £5,707 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.4ct natural round diamond

This 1.4ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2516009731. Listed at 14 retailers as of November 1, 2026, with prices from £2,560 to £5,707, a £3,147 spread on the same certified stone. NZ Jewellers lists it at £5,707. 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

1.40
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2516009731
Dimensions7.21 × 7.15 × 4.40 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.21 mm7.15 mm1.40 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2516009731
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.3%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £5,707 GBP|Low: £2,560 GBP|High: £5,707 GBP|Avg: £3,848 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 7£2,560 GBP
Retailer 9£2,831 GBP
Retailer 8£2,968 GBP
Retailer 2£3,261 GBP
Retailer 3£3,297 GBP
Retailer 5£3,678 GBP
Retailer 4£3,997 GBP
Retailer 6£5,202 GBP
NZ Jewellers£5,707 GBP

43 data points across 9 retailers

14 retailers£2,560 GBP to £5,707 GBP

B+
Cheapest Retailer
-
£2,560 GBP
B+
Retailer 2
-
£2,611 GBP
View
B
Retailer 3
-
£2,787 GBP
View
B
Retailer 4
-
£2,831 GBP
View
Retailer 5
-
£2,968 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£2,968 GBP
View
B+
Retailer 7
-
£2,968 GBP
View
B
Retailer 8
-
£3,261 GBP
View
B
Retailer 9
-
£3,297 GBP
View
B
Retailer 10
-
£3,424 GBP
View
B
Retailer 11
-
£3,678 GBP
View
B
Retailer 12
-
£3,997 GBP
View
B
Retailer 13
-
£5,202 GBP
View
Most Expensive
B
NZ Jewellers
521a662e-9b5b-4efb-977f-dac68c92a4a0 · Nov 5
£5,707 GBP
$7,681 USD
View
13 more retailers have this diamond
Prices start from £2,560 GBPSave up to £3,147 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+
1.40ct Round
£2,560 GBP