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Round|Natural|IGI

1.20ct I IF Round Natural Diamond

EX • I/IF • IGI 801638607

Shape and cutting style on the report: Round brilliant

Certificate IGI 801638607

Diamond specifications and retailer prices

From £2,431 GBP
As of October 30, 2026
Save £415 GBP (15%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £4,604 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 801638607. Listed at 10 retailers as of October 30, 2026, with a relatively tight 17% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
I
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 801638607
Dimensions6.72 × 6.76 × 4.28 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.72 mm6.76 mm1.20 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 801638607
Side View
Table 56.0%Crown 36.7°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 63.5%

Caratlytics Score

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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: Oct 30
Current: £4,604 GBP|Low: £2,476 GBP|High: £4,634 GBP|Avg: £3,214 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 7£2,476 GBP
Retailer 6£2,738 GBP
Retailer 2£2,896 GBP
Retailer 3£3,099 GBP
Retailer 5£3,233 GBP
Retailer 4£3,334 GBP
MOH London£4,604 GBP

39 data points across 7 retailers

10 retailers£2,431 GBP to £2,846 GBP

A
Cheapest Retailer
-
£2,431 GBP
A
Retailer 2
-
£2,476 GBP
View
Retailer 3
-
£2,684 GBP
View
Price last confirmed 9 days ago
Retailer 4
-
£2,738 GBP
View
Price last confirmed 8 days ago
A
Retailer 5
-
£2,846 GBP
View
Retailer 6
-
£2,896 GBP
View
Price last confirmed 7 days ago
Retailer 7
-
£3,099 GBP
View
Price last confirmed 7 days ago
Retailer 8
-
£3,334 GBP
View
Price last confirmed 11 days ago
Retailer 9
-
£4,048 GBP
View
Price last confirmed 11 days ago
Most Expensive
MOH London
FE202423F · Oct 29
£4,604 GBP
View
Price last confirmed 8 days ago
9 more retailers have this diamond
Prices start from £2,431 GBPSave up to £415 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 Round
£2,431 GBP