Oval|Natural|GIA

1.40ct K SI1 Oval Natural Diamond

VG • K/SI1 • GIA 6233618512

Certificate GIA 6233618512

Diamond specifications and retailer prices

From £2,220 GBP
As of November 6, 2026
Save £2,704 GBP (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £5,130 GBP at NZ Jewellers · As of October 20, 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 6233618512. Listed at 16 retailers as of November 2, 2026, with a 122% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
PolishVery Good
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6233618512
Dimensions9.13 × 5.85 × 3.89 mm
L/W Ratio1.56
Top View
9.13 mm5.85 mm1.40 ctK / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6233618512
Side View
Table 56.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.5%

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 6
Current: £3,594 GBP|Low: £2,220 GBP|High: £4,984 GBP|Avg: £3,054 GBP|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 8£2,220 GBP
Retailer 6£2,312 GBP
Retailer 9£2,368 GBP
Retailer 7£2,668 GBP
Retailer 3£2,829 GBP
Retailer 2£2,982 GBP
Retailer 4£3,331 GBP
Retailer 1£3,594 GBP
Retailer 5£4,924 GBP

44 data points across 9 retailers

16 retailers£2,220 GBP to £4,924 GBP

B+
Cheapest Retailer
-
£2,220 GBP
B+
Retailer 2
-
£2,262 GBP
View
Retailer 3
-
£2,312 GBP
View
Price last confirmed 19 days ago
B+
Retailer 4
-
£2,368 GBP
View
Retailer 5
-
£2,418 GBP
View
Price last confirmed 7 days ago
B
Retailer 6
-
£2,566 GBP
View
Retailer 7
-
£2,668 GBP
View
Price last confirmed 21 days ago
Retailer 8
-
£2,668 GBP
View
Price last confirmed 17 days ago
Retailer 9
-
£2,770 GBP
View
Price last confirmed 21 days ago
B
Retailer 10
-
£2,829 GBP
View
B
Retailer 11
-
£2,982 GBP
View
Retailer 12
-
£3,078 GBP
View
Price last confirmed 16 days ago
B
Retailer 13
-
£3,331 GBP
View
B
Retailer 14
-
£3,594 GBP
View
C
Retailer 15
-
£4,924 GBP
View
Most Expensive
NZ Jewellers
fde3e65b-3323-4e5d-9e17-3087feaef759 · Oct 20
£5,130 GBP
$6,867 USD
View
Price last confirmed 16 days ago
15 more retailers have this diamond
Prices start from £2,220 GBPSave up to £2,704 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 Oval
£2,220 GBP