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Heart|Natural|GIA

1.20ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 5553470793

Certificate GIA 5553470793

Diamond specifications and retailer prices

From £2,018 GBP
As of November 6, 2026
Save £2,161 GBP (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,179 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553470793. Listed at 19 retailers as of November 5, 2026, with prices from £2,018 to £4,179, a £2,161 spread on the same certified stone. NZ Jewellers lists it at £4,179. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.48°
Pavilion angle43.49°
OriginNatural
Grading LabGIA
CertificateGIA 5553470793
Dimensions7.24 × 6.27 × 4.52 mm
L/W Ratio1.15
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
7.24 mm6.27 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553470793
Side View
Table 59.0%Crown 37.48°Girdle: Slightly ThickPavilion 43.49°Culet: NoneDepth 62.4%

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 6
Current: £4,179 GBP|Low: £2,018 GBP|High: £4,307 GBP|Avg: £2,783 GBP|-3.0%
NZ Jewellers
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
Retailer 18
November 6, 2026
Retailer 18£2,018 GBP
Retailer 11£2,116 GBP
Retailer 2£2,180 GBP
Retailer 9£2,279 GBP
Retailer 12£2,292 GBP
Retailer 8£2,327 GBP
Retailer 6£2,398 GBP
Retailer 16£2,445 GBP
Retailer 14£2,470 GBP
Retailer 10£2,472 GBP
Retailer 7£2,491 GBP
Retailer 4£2,545 GBP
Retailer 15£2,641 GBP
Retailer 17£2,726 GBP
Retailer 13£2,751 GBP
Retailer 3£2,927 GBP
Retailer 5£4,000 GBP
NZ Jewellers£4,179 GBP

27 data points across 18 retailers

19 retailers£2,018 GBP to £4,179 GBP

B+
Cheapest Retailer
-
£2,018 GBP
B+
Retailer 2
-
£2,116 GBP
View
B+
Retailer 3
-
£2,180 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,279 GBP
View
B+
Retailer 5
-
£2,292 GBP
View
B+
Retailer 6
-
£2,327 GBP
View
B+
Retailer 7
-
£2,398 GBP
View
B+
Retailer 8
-
£2,445 GBP
View
B
Retailer 9
-
£2,470 GBP
View
Retailer 10
-
£2,472 GBP
View
Price last confirmed 9 days ago
B+
Retailer 11
-
£2,491 GBP
View
B
Retailer 12
-
£2,545 GBP
View
Retailer 13
-
£2,641 GBP
View
Price last confirmed 31 days ago
B
Retailer 14
-
£2,641 GBP
View
B
Retailer 15
-
£2,726 GBP
View
B
Retailer 16
-
£2,751 GBP
View
B
Retailer 17
-
£2,927 GBP
View
B
Retailer 18
-
£4,000 GBP
View
Most Expensive
B
NZ Jewellers
2fce64ee-7c30-4c4a-bfd7-58f9eb41f63c · Nov 5
£4,179 GBP
$5,593 USD
View
18 more retailers have this diamond
Prices start from £2,018 GBPSave up to £2,161 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 Heart
£2,018 GBP