Oval|Natural|GIA

1.30ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 1558494958

Certificate GIA 1558494958

Diamond specifications and retailer prices

From £2,229 GBP
As of November 4, 2026
Save £2,146 GBP (49%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £4,375 GBP at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.3ct natural oval diamond

This 1.3ct natural oval sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558494958. Listed at 22 retailers as of November 4, 2026, with a 96% 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

1.30
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558494958
Dimensions8.86 × 6.07 × 3.73 mm
L/W Ratio1.46
Top View
8.86 mm6.07 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558494958
Side View
Table 61.0%CrownGirdle: THK-XTKPavilionCulet: NoneDepth 61.4%

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: £4,375 GBP|Low: £2,129 GBP|High: £4,375 GBP|Avg: £2,787 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9£2,142 GBP
Retailer 4£2,229 GBP
Retailer 3£2,318 GBP
Retailer 2£2,436 GBP
Retailer 12£2,467 GBP
Retailer 11£2,511 GBP
Retailer 5£2,598 GBP
Retailer 10£2,897 GBP
Retailer 7£2,938 GBP
Retailer 6£3,065 GBP
Retailer 8£4,200 GBP
NZ Jewellers£4,375 GBP

29 data points across 12 retailers

22 retailers£2,229 GBP to £4,375 GBP

Retailer 1
-
£2,142 GBP
Price last confirmed 9 days ago
A
Retailer 2
-
£2,229 GBP
View
A
Retailer 3
-
£2,318 GBP
View
Final sale: no returns
A
Retailer 4
-
£2,424 GBP
View
A
Retailer 5
-
£2,436 GBP
View
A
Retailer 6
-
£2,467 GBP
View
Retailer 7
-
£2,511 GBP
View
Price last confirmed 42 days ago
A
Retailer 8
-
£2,511 GBP
View
Retailer 9
-
£2,511 GBP
View
Price last confirmed 8 days ago
A
Retailer 10
-
£2,533 GBP
View
A
Retailer 11
-
£2,598 GBP
View
B+
Retailer 12
-
£2,607 GBP
View
B+
Retailer 13
-
£2,619 GBP
View
Retailer 14
-
£2,682 GBP
View
Price last confirmed 30 days ago
B+
Retailer 15
-
£2,773 GBP
View
Retailer 16
-
£2,897 GBP
View
Price last confirmed 44 days ago
B+
Retailer 17
-
£2,897 GBP
View
B+
Retailer 18
-
£2,938 GBP
View
B+
Retailer 19
-
£3,065 GBP
View
B
Retailer 20
-
£4,200 GBP
View
B
Retailer 21
-
£4,375 GBP
View
Most Expensive
NZ Jewellers
d43d8e48-6917-461b-af79-2de0d6ac3ca9 · Sep 26
£4,375 GBP
$5,856 USD
View
Price last confirmed 41 days ago
21 more retailers have this diamond
Prices start from £2,229 GBPSave up to £2,146 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
1.30ct Oval
£2,229 GBP