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Oval|Natural|GIA

1.20ct K SI1 Oval Natural Diamond

GD • K/SI1 • GIA 2556985857

Certificate GIA 2556985857

Diamond specifications and retailer prices

From £1,209 GBP
As of November 6, 2026
Save £2,286 GBP (65%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,495 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 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 2556985857. Listed at 14 retailers as of November 5, 2026, with prices from £1,209 to £3,495, a £2,286 spread on the same certified stone. NZ Jewellers lists it at £3,495. 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
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2556985857
Dimensions8.02 × 5.80 × 3.75 mm
L/W Ratio1.38
Girdle conditionFaceted
Top View
8.02 mm5.80 mm1.20 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556985857
Side View
Table 61.0%CrownGirdle: THN-ETKPavilionCulet: NDepth 64.6%

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: £3,495 GBP|Low: £1,209 GBP|High: £3,574 GBP|Avg: £1,767 GBP|-2.2%
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 5£1,209 GBP
Retailer 12£1,306 GBP
Retailer 2£1,390 GBP
Retailer 14£1,433 GBP
Retailer 6£1,466 GBP
Retailer 13£1,468 GBP
Retailer 3£1,499 GBP
Retailer 11£1,535 GBP
Retailer 8£1,556 GBP
Retailer 4£1,653 GBP
Retailer 9£1,749 GBP
Retailer 7£1,946 GBP
Retailer 10£2,504 GBP
NZ Jewellers£3,495 GBP

30 data points across 14 retailers

14 retailers£1,209 GBP to £3,495 GBP

A
Cheapest Retailer
-
£1,209 GBP
B+
Retailer 2
-
£1,306 GBP
View
B+
Retailer 3
-
£1,390 GBP
View
B+
Retailer 4
-
£1,433 GBP
View
Retailer 5
-
£1,466 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£1,468 GBP
View
B+
Retailer 7
-
£1,499 GBP
View
B+
Retailer 8
-
£1,535 GBP
View
B+
Retailer 9
-
£1,556 GBP
View
B+
Retailer 10
-
£1,653 GBP
View
B
Retailer 11
-
£1,749 GBP
View
B
Retailer 12
-
£1,946 GBP
View
B
Retailer 13
-
£2,504 GBP
View
Most Expensive
C
NZ Jewellers
c8401c43-d808-4e40-a303-6562df34a598 · Nov 5
£3,495 GBP
$4,678 USD
View
13 more retailers have this diamond
Prices start from £1,209 GBPSave up to £2,286 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
£1,209 GBP