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Oval|Natural|GIA

1.40ct K SI1 Oval Natural Diamond

VG • K/SI1 • GIA 6515820915

Certificate GIA 6515820915

Diamond specifications and retailer prices

From £1,616 GBP
As of November 6, 2026
Save £2,908 GBP (64%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,524 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6515820915. Listed at 18 retailers as of November 5, 2026, with prices from £1,616 to £4,524, a £2,908 spread on the same certified stone. NZ Jewellers lists it at £4,524. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.40
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6515820915
Dimensions8.57 × 6.09 × 3.88 mm
L/W Ratio1.41
Top View
8.57 mm6.09 mm1.40 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6515820915
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.8%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £1,948 GBP|Low: £1,597 GBP|High: £3,638 GBP|Avg: £2,225 GBP|+5.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9£1,616 GBP
Retailer 2£1,938 GBP
Retailer 1£1,948 GBP
Retailer 3£2,099 GBP
Retailer 10£2,118 GBP
Retailer 4£2,241 GBP
Retailer 7£2,291 GBP
Retailer 5£2,519 GBP
Retailer 6£2,641 GBP
Retailer 8£3,609 GBP

38 data points across 10 retailers

18 retailers£1,616 GBP to £4,524 GBP

A
Cheapest Retailer
-
£1,616 GBP
B+
Retailer 2
-
£1,938 GBP
View
B+
Retailer 3
-
£1,948 GBP
View
B+
Retailer 4
-
£2,072 GBP
View
B+
Retailer 5
-
£2,099 GBP
View
B+
Retailer 6
-
£2,118 GBP
View
Retailer 7
-
£2,164 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£2,164 GBP
View
B+
Retailer 9
-
£2,241 GBP
View
B+
Retailer 10
-
£2,247 GBP
View
B+
Retailer 11
-
£2,270 GBP
View
B+
Retailer 12
-
£2,291 GBP
View
B+
Retailer 13
-
£2,377 GBP
View
B+
Retailer 14
-
£2,497 GBP
View
B+
Retailer 15
-
£2,519 GBP
View
B
Retailer 16
-
£2,641 GBP
View
B
Retailer 17
-
£3,609 GBP
View
Most Expensive
C
NZ Jewellers
16f525b1-6f1a-4813-a1be-0a19f1240e1c · Nov 5
£4,524 GBP
$6,056 USD
View
17 more retailers have this diamond
Prices start from £1,616 GBPSave up to £2,908 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
£1,616 GBP