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Oval|Natural|GIA

1.00ct I SI2 Oval Natural Diamond

GD • I/SI2 • GIA 1242091271

Certificate GIA 1242091271

Diamond specifications and retailer prices

From £1,281 GBP
As of November 6, 2026
Save £2,201 GBP (63%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £3,482 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural oval diamond

This 1ct natural oval sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1242091271. Listed at 21 retailers as of November 5, 2026, with prices from £1,281 to £3,482, a £2,201 spread on the same certified stone. NZ Jewellers lists it at £3,482. 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

1.00
Carat
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle41.39°
Pavilion angle32.42°
OriginNatural
Grading LabGIA
CertificateGIA 1242091271
Dimensions7.77 × 5.45 × 3.24 mm
L/W Ratio1.43
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural
Top View
7.77 mm5.45 mm1.00 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1242091271
Side View
Table 65.0%Crown 41.39°Girdle: THK-VTKPavilion 32.42°Culet: NoneDepth 59.4%

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 6
Current: £3,482 GBP|Low: £1,272 GBP|High: £3,482 GBP|Avg: £1,844 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 6, 2026
Retailer 19£1,281 GBP
Retailer 2£1,287 GBP
Retailer 4£1,461 GBP
Retailer 16£1,468 GBP
Retailer 14£1,473 GBP
Retailer 9£1,505 GBP
Retailer 8£1,537 GBP
Retailer 13£1,638 GBP
Retailer 5£1,665 GBP
Retailer 21£1,665 GBP
Retailer 20£1,674 GBP
Retailer 6£1,742 GBP
Retailer 10£1,769 GBP
Retailer 11£1,786 GBP
Retailer 17£1,810 GBP
Retailer 3£1,813 GBP
Retailer 12£1,922 GBP
Retailer 15£2,068 GBP
Retailer 7£2,485 GBP
Retailer 18£2,918 GBP
NZ Jewellers£3,482 GBP

23 data points across 21 retailers

21 retailers£1,281 GBP to £3,482 GBP

B+
Cheapest Retailer
-
£1,281 GBP
A
Retailer 2
-
£1,287 GBP
View
Retailer 3
-
£1,461 GBP
View
Price last confirmed 9 days ago
B+
Retailer 4
-
£1,468 GBP
View
B+
Retailer 5
-
£1,473 GBP
View
B+
Retailer 6
-
£1,505 GBP
View
B+
Retailer 7
-
£1,537 GBP
View
Final sale: no returns
B+
Retailer 8
-
£1,638 GBP
View
Retailer 9
-
£1,665 GBP
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£1,665 GBP
View
B+
Retailer 11
-
£1,674 GBP
View
B+
Retailer 12
-
£1,742 GBP
View
B+
Retailer 13
-
£1,769 GBP
View
B+
Retailer 14
-
£1,786 GBP
View
B+
Retailer 15
-
£1,810 GBP
View
B+
Retailer 16
-
£1,813 GBP
View
B
Retailer 17
-
£1,922 GBP
View
B
Retailer 18
-
£2,068 GBP
View
B
Retailer 19
-
£2,485 GBP
View
B
Retailer 20
-
£2,918 GBP
View
Most Expensive
C
NZ Jewellers
3dbcf63a-1518-440c-8fae-a735d9b70654 · Nov 5
£3,482 GBP
$4,661 USD
View
20 more retailers have this diamond
Prices start from £1,281 GBPSave up to £2,201 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
1.00ct Oval
£1,281 GBP