Round|Natural|GIA

1.40ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2554704098

Certificate GIA 2554704098

Diamond specifications and retailer prices

From £2,252 GBP
As of November 6, 2026
Save £1,673 GBP (43%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,321 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 2554704098. Listed at 14 retailers as of November 4, 2026, with a 74% 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 angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2554704098
Dimensions7.12 × 7.08 × 4.45 mm
L/W Ratio1.01
Star length55%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal, Needle
Top View
7.12 mm7.08 mm1.40 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554704098
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,252 GBP|Low: £2,251 GBP|High: £4,198 GBP|Avg: £2,840 GBP|-6.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 1£2,252 GBP
Retailer 6£2,355 GBP
Retailer 2£2,420 GBP
Retailer 3£2,734 GBP
Retailer 4£2,872 GBP
Retailer 5£3,925 GBP

37 data points across 6 retailers

14 retailers£2,252 GBP to £3,925 GBP

A
Cheapest Retailer
-
£2,252 GBP
B+
Retailer 2
-
£2,355 GBP
View
B+
Retailer 3
-
£2,420 GBP
View
Retailer 4
-
£2,480 GBP
View
Price last confirmed 55 days ago
Retailer 5
-
£2,480 GBP
View
Price last confirmed 29 days ago
Retailer 6
-
£2,480 GBP
View
Price last confirmed 29 days ago
Retailer 7
-
£2,575 GBP
View
Price last confirmed 38 days ago
B+
Retailer 8
-
£2,734 GBP
View
Retailer 9
-
£2,862 GBP
View
Price last confirmed 60 days ago
Retailer 10
-
£2,862 GBP
View
Price last confirmed 38 days ago
B
Retailer 11
-
£2,872 GBP
View
B
Retailer 12
-
£3,925 GBP
View
Retailer 13
-
£4,321 GBP
View
Price last confirmed 55 days ago
Most Expensive
NZ Jewellers
a251de1d-0ddd-4545-bd43-6f2f4acb7a4b · Sep 28
£4,321 GBP
$5,816 USD
View
Price last confirmed 39 days ago
13 more retailers have this diamond
Prices start from £2,252 GBPSave up to £1,673 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.

A
1.40ct Round
£2,252 GBP