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Round|Natural|GIA

1.40ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1523765877

Certificate GIA 1523765877

Diamond specifications and retailer prices

From £2,471 GBP
As of November 4, 2026
Save £2,654 GBP (52%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £5,423 GBP at NZ Jewellers · As of September 28, 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 1523765877. Listed at 15 retailers as of November 4, 2026, with a 107% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1523765877
Dimensions7.14 × 7.08 × 4.44 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Culet sizeNone
Key to symbols
Cloud
Top View
7.14 mm7.08 mm1.40 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1523765877
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.7%

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 4
Current: £3,751 GBP|Low: £2,471 GBP|High: £5,268 GBP|Avg: £3,256 GBP|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 12£2,471 GBP
Retailer 6£2,584 GBP
Retailer 4£2,704 GBP
Retailer 11£2,924 GBP
Retailer 3£3,073 GBP
Retailer 9£3,073 GBP
Retailer 10£3,073 GBP
Retailer 7£3,095 GBP
Retailer 2£3,182 GBP
Retailer 5£3,500 GBP
Retailer 1£3,751 GBP
Retailer 8£5,125 GBP

43 data points across 12 retailers

15 retailers£2,471 GBP to £5,125 GBP

B+
Cheapest Retailer
-
£2,471 GBP
B+
Retailer 2
-
£2,584 GBP
View
B+
Retailer 3
-
£2,704 GBP
View
B+
Retailer 4
-
£2,924 GBP
View
B
Retailer 5
-
£3,073 GBP
View
B
Retailer 6
-
£3,073 GBP
View
Retailer 7
-
£3,073 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£3,095 GBP
View
Retailer 9
-
£3,113 GBP
View
Price last confirmed 39 days ago
B
Retailer 10
-
£3,182 GBP
View
B
Retailer 11
-
£3,500 GBP
View
Retailer 12
-
£3,592 GBP
View
Price last confirmed 38 days ago
B
Retailer 13
-
£3,751 GBP
View
B
Retailer 14
-
£5,125 GBP
View
Most Expensive
NZ Jewellers
855da147-7336-4d5b-8b89-dcafcbe547fe · Sep 28
£5,423 GBP
$7,299 USD
View
Price last confirmed 39 days ago
14 more retailers have this diamond
Prices start from £2,471 GBPSave up to £2,654 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
£2,471 GBP