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Heart|Natural|GIA

1.20ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 2557362057

Certificate GIA 2557362057

Diamond specifications and retailer prices

From £1,387 GBP
As of November 6, 2026
Save £2,471 GBP (64%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,113 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557362057. Listed at 19 retailers as of November 5, 2026, with a 178% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2557362057
Dimensions6.70 × 7.29 × 4.15 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Cavity, Indented Natural, Feather, Natural
Top View
6.70 mm7.29 mm1.20 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2557362057
Side View
Table 62.0%CrownGirdle: VTN-THKPavilionCulet: NoneDepth 57.0%

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 6
Current: £4,113 GBP|Low: £1,387 GBP|High: £4,123 GBP|Avg: £2,345 GBP|-0.2%
Queensmith
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
Retailer 17
November 6, 2026
Retailer 5£1,387 GBP
Retailer 2£1,448 GBP
Retailer 14£1,635 GBP
Retailer 7£1,703 GBP
Retailer 10£1,814 GBP
Retailer 15£1,845 GBP
Retailer 9£1,855 GBP
Retailer 12£1,928 GBP
Retailer 3£1,930 GBP
Retailer 6£1,949 GBP
Retailer 13£1,952 GBP
Retailer 16£2,010 GBP
Retailer 4£2,129 GBP
Retailer 11£2,291 GBP
Retailer 8£3,267 GBP
Retailer 17£3,857 GBP
Queensmith£4,113 GBP

23 data points across 17 retailers

19 retailers£1,387 GBP to £3,857 GBP

A
Cheapest Retailer
-
£1,387 GBP
A
Retailer 2
-
£1,448 GBP
View
B+
Retailer 3
-
£1,635 GBP
View
B+
Retailer 4
-
£1,703 GBP
View
Final sale: no returns
B+
Retailer 5
-
£1,736 GBP
View
B+
Retailer 6
-
£1,814 GBP
View
B+
Retailer 7
-
£1,845 GBP
View
Retailer 8
-
£1,855 GBP
View
Price last confirmed 9 days ago
B+
Retailer 9
-
£1,873 GBP
View
B+
Retailer 10
-
£1,928 GBP
View
B+
Retailer 11
-
£1,930 GBP
View
B+
Retailer 12
-
£1,949 GBP
View
B+
Retailer 13
-
£1,952 GBP
View
B+
Retailer 14
-
£2,010 GBP
View
B
Retailer 15
-
£2,129 GBP
View
B+
Retailer 16
-
£2,291 GBP
View
Retailer 17
-
£3,267 GBP
View
Price last confirmed 9 days ago
B
Retailer 18
-
£3,857 GBP
View
Most Expensive
Queensmith
2557362057 · Oct 28
£4,113 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from £1,387 GBPSave up to £2,471 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 Heart
£1,387 GBP