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Oval|Natural|GIA

1.40ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 5413645567

Certificate GIA 5413645567

Diamond specifications and retailer prices

From £1,712 GBP
As of November 6, 2026
Save £2,294 GBP (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £4,005 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.4ct natural oval diamond

This 1.4ct natural oval 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 stated by the retailer rather than the lab and certified by GIA 5413645567. Listed at 17 retailers as of November 5, 2026, with prices from £1,712 to £4,005, a £2,294 spread on the same certified stone. NZ Jewellers lists it at £4,005. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5413645567
Dimensions8.91 × 6.01 × 3.92 mm
L/W Ratio1.48
Top View
8.91 mm6.01 mm1.40 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5413645567
Side View
Table 55.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.2%

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: £4,005 GBP|Low: £1,702 GBP|High: £4,033 GBP|Avg: £2,602 GBP|-0.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 12£1,712 GBP
Retailer 7£2,069 GBP
Retailer 14£2,069 GBP
Retailer 3£2,299 GBP
Retailer 13£2,299 GBP
Retailer 9£2,362 GBP
Retailer 2£2,383 GBP
Retailer 4£2,387 GBP
Retailer 6£2,387 GBP
Retailer 15£2,405 GBP
Retailer 5£2,652 GBP
Retailer 8£2,675 GBP
Retailer 10£2,805 GBP
Retailer 11£3,834 GBP
NZ Jewellers£4,005 GBP

32 data points across 15 retailers

17 retailers£1,712 GBP to £4,005 GBP

A
Cheapest Retailer
-
£1,712 GBP
A
Retailer 2
-
£2,069 GBP
View
B+
Retailer 3
-
£2,069 GBP
View
B+
Retailer 4
-
£2,228 GBP
View
Retailer 5
-
£2,240 GBP
View
Price last confirmed 117 days ago
Retailer 6
-
£2,299 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£2,299 GBP
View
B+
Retailer 8
-
£2,362 GBP
View
B+
Retailer 9
-
£2,383 GBP
View
B+
Retailer 10
-
£2,387 GBP
View
B+
Retailer 11
-
£2,387 GBP
View
B+
Retailer 12
-
£2,405 GBP
View
B+
Retailer 13
-
£2,652 GBP
View
B+
Retailer 14
-
£2,675 GBP
View
B
Retailer 15
-
£2,805 GBP
View
B
Retailer 16
-
£3,834 GBP
View
Most Expensive
B
NZ Jewellers
d1a521e4-9236-45e6-9a72-6edda4d1aa45 · Nov 5
£4,005 GBP
$5,361 USD
View
16 more retailers have this diamond
Prices start from £1,712 GBPSave up to £2,294 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 Oval
£1,712 GBP