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Oval|Natural|GIA

1.20ct K SI1 Oval Natural Diamond

VG • K/SI1 • GIA 1515096580

Certificate GIA 1515096580

Diamond specifications and retailer prices

From £1,272 GBP
As of November 6, 2026
Save £1,658 GBP (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,617 GBP at NZ Jewellers · As of September 25, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1515096580. Listed at 18 retailers as of November 1, 2026, with a 130% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.20
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle36.2°
OriginNatural
Grading LabGIA
CertificateGIA 1515096580
Dimensions8.50 × 5.99 × 3.51 mm
L/W Ratio1.42
Girdle conditionFaceted
Top View
8.50 mm5.99 mm1.20 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1515096580
Side View
Table 59.0%CrownGirdle: ThickPavilion 36.2°Culet: NoneDepth 58.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,282 GBP|Low: £1,252 GBP|High: £3,015 GBP|Avg: £1,713 GBP|-1.9%
Retailer 1
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
November 6, 2026
Retailer 3£1,272 GBP
Retailer 1£1,282 GBP
Retailer 7£1,330 GBP
Retailer 14£1,399 GBP
Retailer 13£1,412 GBP
Retailer 12£1,481 GBP
Retailer 8£1,486 GBP
Retailer 16£1,554 GBP
Retailer 5£1,616 GBP
Retailer 2£1,636 GBP
Retailer 11£1,657 GBP
Retailer 9£1,662 GBP
Retailer 10£2,061 GBP
Retailer 4£2,069 GBP
Retailer 15£2,544 GBP
Retailer 6£2,929 GBP

29 data points across 16 retailers

18 retailers£1,272 GBP to £2,929 GBP

A
Cheapest Retailer
-
£1,272 GBP
A
Retailer 2
-
£1,282 GBP
View
A
Retailer 3
-
£1,330 GBP
View
A
Retailer 4
-
£1,399 GBP
View
B+
Retailer 5
-
£1,412 GBP
View
Final sale: no returns
B+
Retailer 6
-
£1,481 GBP
View
B+
Retailer 7
-
£1,486 GBP
View
B+
Retailer 8
-
£1,554 GBP
View
B+
Retailer 9
-
£1,616 GBP
View
B+
Retailer 10
-
£1,636 GBP
View
B+
Retailer 11
-
£1,657 GBP
View
B+
Retailer 12
-
£1,662 GBP
View
B+
Retailer 13
-
£1,694 GBP
View
B+
Retailer 14
-
£2,061 GBP
View
B+
Retailer 15
-
£2,069 GBP
View
B
Retailer 16
-
£2,544 GBP
View
B
Retailer 17
-
£2,929 GBP
View
Most Expensive
NZ Jewellers
fd603273-ca71-4cda-8fbb-be68dbe0ad10 · Sep 25
£3,617 GBP
$4,841 USD
View
Price last confirmed 42 days ago
17 more retailers have this diamond
Prices start from £1,272 GBPSave up to £1,658 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
£1,272 GBP