Oval|Natural|GIA

1.20ct K SI1 Oval Natural Diamond

GD • K/SI1 • GIA 1375718922

Certificate GIA 1375718922

Diamond specifications and retailer prices

From £1,970 GBP
As of November 5, 2026
Save £1,612 GBP (45%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,600 GBP at NZ Jewellers · As of October 20, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 1375718922. Listed at 18 retailers as of November 4, 2026, with a 82% 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1375718922
Dimensions8.49 × 5.84 × 3.65 mm
L/W Ratio1.45
Culet sizeNone
Top View
8.49 mm5.84 mm1.20 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1375718922
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £4,600 GBP|Low: £1,970 GBP|High: £4,600 GBP|Avg: £2,559 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
November 6, 2026
Retailer 10£1,970 GBP
Retailer 13£1,998 GBP
Retailer 12£2,002 GBP
Retailer 8£2,067 GBP
Retailer 3£2,070 GBP
Retailer 2£2,084 GBP
Retailer 4£2,148 GBP
Retailer 5£2,200 GBP
Retailer 14£2,285 GBP
Retailer 6£2,539 GBP
Retailer 7£2,561 GBP
Retailer 9£2,685 GBP
Retailer 11£3,582 GBP
NZ Jewellers£4,600 GBP

36 data points across 14 retailers

18 retailers£1,970 GBP to £3,582 GBP

B
Cheapest Retailer
-
£1,970 GBP
B
Retailer 2
-
£1,975 GBP
View
B
Retailer 3
-
£1,998 GBP
View
Retailer 4
-
£2,002 GBP
View
Price last confirmed 16 days ago
B
Retailer 5
-
£2,067 GBP
View
B
Retailer 6
-
£2,070 GBP
View
B
Retailer 7
-
£2,084 GBP
View
B
Retailer 8
-
£2,148 GBP
View
Retailer 9
-
£2,200 GBP
View
Price last confirmed 15 days ago
Retailer 10
-
£2,200 GBP
View
Price last confirmed 21 days ago
Retailer 11
-
£2,285 GBP
View
Price last confirmed 15 days ago
B
Retailer 12
-
£2,285 GBP
View
Retailer 13
-
£2,539 GBP
View
Price last confirmed 14 days ago
B
Retailer 14
-
£2,539 GBP
View
B
Retailer 15
-
£2,561 GBP
View
B
Retailer 16
-
£2,685 GBP
View
C
Retailer 17
-
£3,582 GBP
View
Most Expensive
NZ Jewellers
2fee05b9-a252-498c-b3a2-255a714bf111 · Oct 20
£4,600 GBP
$6,157 USD
View
Price last confirmed 16 days ago
17 more retailers have this diamond
Prices start from £1,970 GBPSave up to £1,612 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
£1,970 GBP