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Oval|Natural|GIA

1.20ct I SI1 Oval Natural Diamond

ID • I/SI1 • GIA 6541152972

Certificate GIA 6541152972

Diamond specifications and retailer prices

From £1,854 GBP
As of November 6, 2026
Save £2,338 GBP (56%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £4,192 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 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 6541152972. Listed at 25 retailers as of November 5, 2026, with prices from £1,854 to £4,192, a £2,338 spread on the same certified stone. NZ Jewellers lists it at £4,192. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.43°
Pavilion angle35.92°
OriginNatural
Grading LabGIA
CertificateGIA 6541152972
Dimensions8.12 × 5.80 × 3.69 mm
L/W Ratio1.40
Top View
8.12 mm5.80 mm1.20 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541152972
Side View
Table 63.0%Crown 41.43°Girdle: THK-VTKPavilion 35.92°Culet: NoneDepth 63.7%

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: £1,854 GBP|Low: £1,854 GBP|High: £4,067 GBP|Avg: £2,562 GBP|-2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1£1,854 GBP
Retailer 8£1,865 GBP
Retailer 5£2,126 GBP
Retailer 9£2,315 GBP
Retailer 2£2,334 GBP
Retailer 3£2,474 GBP
Retailer 7£2,816 GBP
Retailer 4£2,937 GBP
Retailer 6£4,013 GBP

26 data points across 9 retailers

25 retailers£1,854 GBP to £4,192 GBP

A
Cheapest Retailer
-
£1,854 GBP
A
Retailer 2
-
£1,865 GBP
View
B+
Retailer 3
-
£2,055 GBP
View
B+
Retailer 4
-
£2,126 GBP
View
B+
Retailer 5
-
£2,136 GBP
View
B+
Retailer 6
-
£2,220 GBP
View
Final sale: no returns
B+
Retailer 7
-
£2,315 GBP
View
B+
Retailer 8
-
£2,331 GBP
View
B+
Retailer 9
-
£2,334 GBP
View
B+
Retailer 10
-
£2,386 GBP
View
B+
Retailer 11
-
£2,406 GBP
View
Retailer 12
-
£2,406 GBP
View
Price last confirmed 8 days ago
B+
Retailer 13
-
£2,474 GBP
View
B+
Retailer 14
-
£2,499 GBP
View
B+
Retailer 15
-
£2,513 GBP
View
Retailer 16
-
£2,580 GBP
View
Price last confirmed 33 days ago
B
Retailer 17
-
£2,587 GBP
View
B
Retailer 18
-
£2,592 GBP
View
B+
Retailer 19
-
£2,776 GBP
View
B+
Retailer 20
-
£2,816 GBP
View
B+
Retailer 21
-
£2,937 GBP
View
B
Retailer 22
-
£3,499 GBP
View
B
Retailer 23
-
£3,597 GBP
View
B
Retailer 24
-
£4,013 GBP
View
Most Expensive
B
NZ Jewellers
8faaa497-440b-47f0-80c3-a48d16237cf2 · Nov 5
£4,192 GBP
$5,611 USD
View
24 more retailers have this diamond
Prices start from £1,854 GBPSave up to £2,338 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
£1,854 GBP