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Round|Natural|GIA

1.20ct I IF Round Natural Diamond

EX • I/IF • GIA 6542156690

Certificate GIA 6542156690

Diamond specifications and retailer prices

From £2,872 GBP
As of November 4, 2026
Save £3,347 GBP (54%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £6,684 GBP at NZ Jewellers · As of September 26, 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 I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 6542156690. Listed at 18 retailers as of November 4, 2026, with a 117% 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
I
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6542156690
Dimensions6.72 × 6.77 × 4.24 mm
L/W Ratio1.01
Top View
6.72 mm6.77 mm1.20 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542156690
Side View
Table 56.0%Crown 35.5°Girdle: THN-THNPavilion 40.8°Culet: NoneDepth 62.9%

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 4
Current: £3,647 GBP|Low: £2,872 GBP|High: £6,442 GBP|Avg: £4,054 GBP|-2.7%
Retailer 1
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
Retailer 15
Retailer 16
November 6, 2026
Retailer 6£2,872 GBP
Retailer 3£3,415 GBP
Retailer 15£3,513 GBP
Retailer 16£3,614 GBP
Retailer 12£3,638 GBP
Retailer 1£3,647 GBP
Retailer 14£3,658 GBP
Retailer 7£3,687 GBP
Retailer 4£3,927 GBP
Retailer 5£3,988 GBP
Retailer 8£3,997 GBP
Retailer 10£4,289 GBP
Retailer 11£4,396 GBP
Retailer 9£4,777 GBP
Retailer 2£5,572 GBP
Retailer 13£6,219 GBP

38 data points across 16 retailers

18 retailers£2,872 GBP to £6,219 GBP

A
Cheapest Retailer
-
£2,872 GBP
A
Retailer 2
-
£3,415 GBP
View
A
Retailer 3
-
£3,513 GBP
View
B+
Retailer 4
-
£3,614 GBP
View
Final sale: no returns
A
Retailer 5
-
£3,638 GBP
View
B+
Retailer 6
-
£3,647 GBP
View
B+
Retailer 7
-
£3,658 GBP
View
Retailer 8
-
£3,687 GBP
View
Price last confirmed 11 days ago
B+
Retailer 9
-
£3,927 GBP
View
Retailer 10
-
£3,988 GBP
View
Price last confirmed 28 days ago
Retailer 11
-
£3,997 GBP
View
Price last confirmed 38 days ago
B+
Retailer 12
-
£4,289 GBP
View
B+
Retailer 13
-
£4,396 GBP
View
Retailer 14
-
£4,611 GBP
View
Price last confirmed 38 days ago
B+
Retailer 15
-
£4,777 GBP
View
B
Retailer 16
-
£5,572 GBP
View
B
Retailer 17
-
£6,219 GBP
View
Most Expensive
NZ Jewellers
edb90cc5-13e8-490c-ba65-9b780c37de8c · Sep 26
£6,684 GBP
$8,996 USD
View
Price last confirmed 40 days ago
17 more retailers have this diamond
Prices start from £2,872 GBPSave up to £3,347 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
£2,872 GBP