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Round|Natural|IGI

1.20ct J IF Round Natural Diamond

EX • J/IF • IGI 731513302

Shape and cutting style on the report: Round brilliant

Certificate IGI 731513302

Diamond specifications and retailer prices

From £1,931 GBP
As of November 1, 2026
Save £2,575 GBP (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,506 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 731513302. Listed at 8 retailers as of October 30, 2026, with prices from £1,931 to £4,506, a £2,575 spread on the same certified stone. NZ Jewellers lists it at £4,506. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
J
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 731513302
Dimensions6.79 × 6.84 × 4.22 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.79 mm6.84 mm1.20 ctJ / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 731513302
Side View
Table 53.0%Crown 34°Girdle: MediumPavilion 40.6°Culet: NoneDepth 61.9%

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 1
Current: £4,506 GBP|Low: £1,574 GBP|High: £4,506 GBP|Avg: £2,699 GBP|+5.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 2£1,931 GBP
Retailer 5£1,990 GBP
Retailer 7£2,155 GBP
Retailer 8£2,238 GBP
Retailer 4£2,517 GBP
Retailer 6£3,268 GBP
Retailer 3£3,605 GBP
NZ Jewellers£4,506 GBP

32 data points across 8 retailers

8 retailers£1,931 GBP to £4,506 GBP

A
Cheapest Retailer
-
£1,931 GBP
A
Retailer 2
-
£1,990 GBP
$2,666 USD
View
Final sale: no returns
A
Retailer 3
-
£2,155 GBP
$2,888 USD
View
A
Retailer 4
-
£2,238 GBP
$2,999 USD
View
B+
Retailer 5
-
£2,517 GBP
€3,212 EUR
View
Retailer 6
-
£3,268 GBP
€4,170 EUR
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£3,605 GBP
View
Most Expensive
B
NZ Jewellers
cc9168b5-49b0-4767-a0c6-a55b5ff875b9 · Oct 30
£4,506 GBP
$6,038 USD
View
7 more retailers have this diamond
Prices start from £1,931 GBPSave up to £2,575 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
£1,931 GBP