Oval|Natural|GIA

1.20ct F SI1 Oval Natural Diamond

EX • F/SI1 • GIA 2537138826

Certificate GIA 2537138826

Diamond specifications and retailer prices

From £3,408 GBP
As of November 4, 2026
Save £2,929 GBP (46%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: £7,215 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural oval diamond

This 1.2ct natural oval sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2537138826. Listed at 28 retailers as of November 4, 2026, with a 86% 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

1.20
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.39°
Pavilion angle41.45°
OriginNatural
Grading LabGIA
CertificateGIA 2537138826
Dimensions8.28 × 5.95 × 3.72 mm
L/W Ratio1.39
Top View
8.28 mm5.95 mm1.20 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2537138826
Side View
Table 60.0%Crown 36.39°Girdle: THN-THKPavilion 41.45°Culet: NoneDepth 62.5%

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 4
Current: £7,215 GBP|Low: £3,388 GBP|High: £7,215 GBP|Avg: £4,486 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
November 6, 2026
Retailer 8£3,446 GBP
Retailer 6£3,668 GBP
Retailer 3£3,892 GBP
Retailer 14£3,908 GBP
Retailer 15£3,908 GBP
Retailer 16£3,908 GBP
Retailer 9£4,102 GBP
Retailer 4£4,105 GBP
Retailer 10£4,142 GBP
Retailer 2£4,185 GBP
Retailer 7£4,343 GBP
Retailer 17£4,510 GBP
Retailer 5£4,562 GBP
Retailer 13£4,712 GBP
Retailer 11£5,263 GBP
Retailer 12£6,338 GBP
NZ Jewellers£7,215 GBP

23 data points across 17 retailers

28 retailers£3,408 GBP to £6,338 GBP

B+
Cheapest Retailer
-
£3,408 GBP
B+
Retailer 2
-
£3,446 GBP
View
B
Retailer 3
-
£3,638 GBP
View
B
Retailer 4
-
£3,668 GBP
View
B
Retailer 5
-
£3,867 GBP
View
B
Retailer 6
-
£3,892 GBP
View
Retailer 7
-
£3,908 GBP
View
Price last confirmed 8 days ago
B
Retailer 8
-
£3,908 GBP
View
Retailer 9
-
£3,908 GBP
View
Price last confirmed 33 days ago
B
Retailer 10
-
£3,908 GBP
View
Retailer 11
-
£4,005 GBP
View
Price last confirmed 66 days ago
B
Retailer 12
-
£4,102 GBP
View
B
Retailer 13
-
£4,105 GBP
View
B
Retailer 14
-
£4,142 GBP
View
B
Retailer 15
-
£4,185 GBP
View
Retailer 16
-
£4,343 GBP
View
Price last confirmed 33 days ago
B
Retailer 17
-
£4,371 GBP
View
B
Retailer 18
-
£4,371 GBP
View
Retailer 19
-
£4,510 GBP
View
Price last confirmed 33 days ago
B
Retailer 20
-
£4,510 GBP
View
B
Retailer 21
-
£4,520 GBP
View
B
Retailer 22
-
£4,562 GBP
View
B
Retailer 23
-
£4,712 GBP
View
B
Retailer 24
-
£5,263 GBP
View
B
Retailer 25
-
£6,338 GBP
View
Retailer 26
-
£7,215 GBP
View
Price under review
Retailer 27
-
£7,215 GBP
View
Price under review
Most Expensive
NZ Jewellers
a81af657-d250-40bb-8813-530815966422 · Nov 5
£7,215 GBP
$9,657 USD
View
Price under review
27 more retailers have this diamond
Prices start from £3,408 GBPSave up to £2,929 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+
1.20ct Oval
£3,408 GBP