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Oval|Natural|GIA

1.20ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 7551283807

Certificate GIA 7551283807

Diamond specifications and retailer prices

From £1,195 GBP
As of November 6, 2026
Save £2,194 GBP (65%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,709 GBP at NZ Jewellers · As of September 14, 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 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 7551283807. Listed at 13 retailers as of November 5, 2026, with a 184% 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551283807
Dimensions8.23 × 5.88 × 3.71 mm
L/W Ratio1.40
Key to symbols
Crystal, Feather
Top View
8.23 mm5.88 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7551283807
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NDepth 63.2%

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: £3,389 GBP|Low: £1,195 GBP|High: £3,645 GBP|Avg: £1,955 GBP|-7.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8£1,195 GBP
Retailer 10£1,540 GBP
Retailer 9£1,621 GBP
Retailer 3£1,638 GBP
Retailer 2£1,656 GBP
Retailer 7£1,696 GBP
Retailer 6£1,699 GBP
Retailer 11£1,927 GBP
Retailer 4£2,022 GBP
Retailer 5£2,832 GBP
NZ Jewellers£3,389 GBP

43 data points across 11 retailers

13 retailers£1,195 GBP to £3,389 GBP

A
Cheapest Retailer
-
£1,195 GBP
A
Retailer 2
-
£1,540 GBP
View
A
Retailer 3
-
£1,621 GBP
View
A
Retailer 4
-
£1,638 GBP
View
Final sale: no returns
A
Retailer 5
-
£1,656 GBP
View
A
Retailer 6
-
£1,696 GBP
View
B+
Retailer 7
-
£1,699 GBP
View
Retailer 8
-
£1,774 GBP
View
Price last confirmed 53 days ago
B+
Retailer 9
-
£1,927 GBP
View
B+
Retailer 10
-
£2,022 GBP
View
B+
Retailer 11
-
£2,832 GBP
View
B
Retailer 12
-
£3,389 GBP
View
Most Expensive
NZ Jewellers
c6fedaf0-5d0b-43d5-9dfa-53d55f288573 · Sep 14
£3,709 GBP
$4,965 USD
View
Price last confirmed 53 days ago
12 more retailers have this diamond
Prices start from £1,195 GBPSave up to £2,194 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
1.20ct Oval
£1,195 GBP