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Heart|Natural|GIA

1.20ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 6551190913

Certificate GIA 6551190913

Diamond specifications and retailer prices

From £2,788 GBP
As of November 6, 2026
Save £2,900 GBP (51%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £5,688 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551190913. Listed at 19 retailers as of November 5, 2026, with prices from £2,788 to £5,688, a £2,900 spread on the same certified stone. NZ Jewellers lists it at £5,688. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.14°
Pavilion angle44.14°
OriginNatural
Grading LabGIA
CertificateGIA 6551190913
Dimensions7.39 × 6.47 × 4.43 mm
L/W Ratio1.14
Top View
7.39 mm6.47 mm1.20 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551190913
Side View
Table 61.0%Crown 36.14°Girdle: Slightly ThickPavilion 44.14°Culet: NoneDepth 59.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £5,688 GBP|Low: £2,788 GBP|High: £5,863 GBP|Avg: £3,769 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
Retailer 19
November 6, 2026
Retailer 8£2,788 GBP
Retailer 5£2,873 GBP
Retailer 9£3,013 GBP
Retailer 4£3,040 GBP
Retailer 3£3,097 GBP
Retailer 2£3,168 GBP
Retailer 17£3,265 GBP
Retailer 18£3,265 GBP
Retailer 13£3,307 GBP
Retailer 10£3,366 GBP
Retailer 19£3,376 GBP
Retailer 11£3,393 GBP
Retailer 15£3,424 GBP
Retailer 6£3,440 GBP
Retailer 12£3,674 GBP
Retailer 7£3,768 GBP
Retailer 14£3,984 GBP
Retailer 16£5,186 GBP
NZ Jewellers£5,688 GBP

34 data points across 19 retailers

19 retailers£2,788 GBP to £5,688 GBP

B+
Cheapest Retailer
-
£2,788 GBP
B+
Retailer 2
-
£2,873 GBP
View
B
Retailer 3
-
£3,013 GBP
View
Final sale: no returns
B
Retailer 4
-
£3,040 GBP
View
B
Retailer 5
-
£3,097 GBP
View
B+
Retailer 6
-
£3,168 GBP
View
B+
Retailer 7
-
£3,265 GBP
View
B+
Retailer 8
-
£3,265 GBP
View
B+
Retailer 9
-
£3,307 GBP
View
Retailer 10
-
£3,366 GBP
View
Price last confirmed 8 days ago
B
Retailer 11
-
£3,376 GBP
View
Retailer 12
-
£3,393 GBP
View
Price last confirmed 28 days ago
B
Retailer 13
-
£3,424 GBP
View
B
Retailer 14
-
£3,440 GBP
View
B
Retailer 15
-
£3,674 GBP
View
B
Retailer 16
-
£3,768 GBP
View
B
Retailer 17
-
£3,984 GBP
View
B
Retailer 18
-
£5,186 GBP
View
Most Expensive
B
NZ Jewellers
0a25a36f-e9c2-4d5b-ab2c-e956a9981c5e · Nov 5
£5,688 GBP
$7,614 USD
View
18 more retailers have this diamond
Prices start from £2,788 GBPSave up to £2,900 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
£2,788 GBP