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Round|Natural|GIA

1.20ct J IF Round Natural Diamond

EX • J/IF • GIA 2557076717

Certificate GIA 2557076717

Diamond specifications and retailer prices

From £3,189 GBP
As of November 1, 2026
Save £2,482 GBP (44%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £6,203 GBP at NZ Jewellers · As of October 3, 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 GIA 2557076717. Listed at 7 retailers as of November 1, 2026, with a 78% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2557076717
Dimensions6.73 × 6.77 × 4.24 mm
L/W Ratio1.01
Star length50%
Top View
6.73 mm6.77 mm1.20 ctJ / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557076717
Side View
Table 57.0%Crown 35°Girdle: STK-STKPavilion 41.2°Culet: NoneDepth 62.9%

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 1
Current: £6,203 GBP|Low: £2,601 GBP|High: £6,203 GBP|Avg: £4,067 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 2£3,189 GBP
Retailer 7£3,276 GBP
Retailer 6£3,286 GBP
Retailer 4£3,840 GBP
Retailer 5£3,962 GBP
Retailer 3£5,671 GBP
NZ Jewellers£6,203 GBP

45 data points across 7 retailers

7 retailers£3,189 GBP to £5,671 GBP

B+
Cheapest Retailer
-
£3,189 GBP
B+
Retailer 2
-
£3,276 GBP
$4,389 USD
View
B+
Retailer 3
-
£3,286 GBP
$4,403 USD
View
Final sale: no returns
B+
Retailer 4
-
£3,840 GBP
€4,900 EUR
View
B
Retailer 5
-
£3,962 GBP
View
B
Retailer 6
-
£5,671 GBP
View
Most Expensive
NZ Jewellers
62ca6949-c3a9-4993-a4c5-cb282de7b618 · Oct 3
£6,203 GBP
$8,311 USD
View
Price last confirmed 29 days ago
6 more retailers have this diamond
Prices start from £3,189 GBPSave up to £2,482 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 Round
£3,189 GBP