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Oval|Natural|GIA

1.20ct M SI1 Oval Natural Diamond

M/SI1 • GIA 6555825543

Certificate GIA 6555825543

Diamond specifications and retailer prices

From £1,168 GBP
As of November 6, 2026
Save £1,730 GBP (60%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,899 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 M colour (faint-tinted) and SI1 clarity (slightly-included) and certified by GIA 6555825543. Listed at 9 retailers as of November 5, 2026, with prices from £1,168 to £2,899, a £1,730 spread on the same certified stone. NZ Jewellers lists it at £2,899. 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
M
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555825543
Dimensions8.09 × 5.84 × 3.81 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle
Top View
8.09 mm5.84 mm1.20 ctM / SI1
OriginNatural
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6555825543
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 65.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,899 GBP|Low: £1,168 GBP|High: £2,899 GBP|Avg: £1,503 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2£1,168 GBP
Retailer 5£1,189 GBP
Retailer 7£1,189 GBP
Retailer 8£1,243 GBP
Retailer 9£1,248 GBP
Retailer 6£1,371 GBP
Retailer 4£1,450 GBP
Retailer 3£1,614 GBP
NZ Jewellers£2,899 GBP

39 data points across 9 retailers

9 retailers£1,168 GBP to £2,899 GBP

B+
Cheapest Retailer
-
£1,168 GBP
B
Retailer 2
-
£1,189 GBP
View
Retailer 3
-
£1,189 GBP
View
Price last confirmed 8 days ago
B
Retailer 4
-
£1,243 GBP
View
B
Retailer 5
-
£1,248 GBP
View
B
Retailer 6
-
£1,371 GBP
View
B
Retailer 7
-
£1,450 GBP
View
B
Retailer 8
-
£1,614 GBP
View
Most Expensive
C
NZ Jewellers
f5ebd0a9-a5c4-48b7-831b-525ec4dce630 · Nov 5
£2,899 GBP
$3,880 USD
View
8 more retailers have this diamond
Prices start from £1,168 GBPSave up to £1,730 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
£1,168 GBP