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Oval|Natural|GIA

1.40ct K SI1 Oval Natural Diamond

VG • K/SI1 • GIA 1232887320

Certificate GIA 1232887320

Diamond specifications and retailer prices

From £1,883 GBP
As of November 4, 2026
Save £1,412 GBP (43%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,932 GBP at NZ Jewellers · As of September 29, 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 1232887320. Listed at 9 retailers as of November 2, 2026, with a 75% 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1232887320
Dimensions8.28 × 6.07 × 4.01 mm
L/W Ratio1.36
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle, Indented Natural
Top View
8.28 mm6.07 mm1.40 ctK / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1232887320
Side View
Table 58.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 66.1%

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 4
Current: £1,883 GBP|Low: £1,789 GBP|High: £3,334 GBP|Avg: £2,258 GBP|+1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 4, 2026
Retailer 6£1,789 GBP
Retailer 1£1,883 GBP
Retailer 2£1,990 GBP
Retailer 7£2,039 GBP
Retailer 8£2,281 GBP
Retailer 4£2,312 GBP
Retailer 5£2,437 GBP
Retailer 3£3,295 GBP

35 data points across 8 retailers

9 retailers£1,883 GBP to £3,295 GBP

Retailer 1
-
£1,880 GBP
Price last confirmed 29 days ago
Retailer 2
-
£1,880 GBP
View
Price last confirmed 29 days ago
A
Retailer 3
-
£1,883 GBP
View
Retailer 4
-
£1,967 GBP
View
Price last confirmed 38 days ago
B+
Retailer 5
-
£1,990 GBP
View
Retailer 6
-
£2,170 GBP
View
Price last confirmed 38 days ago
B+
Retailer 7
-
£2,312 GBP
View
B
Retailer 8
-
£3,295 GBP
View
Most Expensive
NZ Jewellers
c57d268b-c008-4886-8d60-a96f43b29616 · Sep 29
£3,932 GBP
$5,263 USD
View
Price last confirmed 38 days ago
8 more retailers have this diamond
Prices start from £1,883 GBPSave up to £1,412 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
£1,883 GBP