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Heart|Natural|GIA

1.20ct F SI1 Heart Natural Diamond

ID • F/SI1 • GIA 1533868510

Certificate GIA 1533868510

Diamond specifications and retailer prices

From £2,114 GBP
As of November 5, 2026
Save £1,999 GBP (49%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,114 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 1533868510. Listed at 19 retailers as of November 5, 2026, with prices from £2,114 to £4,114, a £1,999 spread on the same certified stone. NZ Jewellers lists it at £4,114. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle36.42°
Pavilion angle43.11°
OriginNatural
Grading LabGIA
CertificateGIA 1533868510
Dimensions7.31 × 6.60 × 4.33 mm
L/W Ratio1.11
Culet sizeNone
Key to symbols
Feather, Twinning Wisp
Top View
7.31 mm6.60 mm1.20 ctF / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1533868510
Side View
Table 58.0%Crown 36.42°Girdle: Slightly ThickPavilion 43.11°Culet: NoneDepth 59.3%

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 5
Current: £4,114 GBP|Low: £2,114 GBP|High: £4,241 GBP|Avg: £2,723 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 6£2,114 GBP
Retailer 16£2,114 GBP
Retailer 9£2,179 GBP
Retailer 5£2,247 GBP
Retailer 11£2,291 GBP
Retailer 17£2,362 GBP
Retailer 10£2,434 GBP
Retailer 13£2,443 GBP
Retailer 3£2,452 GBP
Retailer 4£2,468 GBP
Retailer 2£2,487 GBP
Retailer 15£2,505 GBP
Retailer 7£2,640 GBP
Retailer 8£2,725 GBP
Retailer 12£2,749 GBP
Retailer 14£2,882 GBP
Retailer 18£3,948 GBP
NZ Jewellers£4,114 GBP

28 data points across 18 retailers

19 retailers£2,114 GBP to £4,114 GBP

B+
Cheapest Retailer
-
£2,114 GBP
B+
Retailer 2
-
£2,114 GBP
View
B+
Retailer 3
-
£2,179 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,247 GBP
View
B+
Retailer 5
-
£2,291 GBP
View
B+
Retailer 6
-
£2,362 GBP
View
Retailer 7
-
£2,434 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£2,443 GBP
View
B+
Retailer 9
-
£2,452 GBP
View
B+
Retailer 10
-
£2,468 GBP
View
B+
Retailer 11
-
£2,487 GBP
View
B+
Retailer 12
-
£2,505 GBP
View
Retailer 13
-
£2,600 GBP
View
Price last confirmed 30 days ago
B
Retailer 14
-
£2,640 GBP
View
B+
Retailer 15
-
£2,725 GBP
View
B+
Retailer 16
-
£2,749 GBP
View
B
Retailer 17
-
£2,882 GBP
View
B
Retailer 18
-
£3,948 GBP
View
Most Expensive
B
NZ Jewellers
4e7c2b87-0a6b-470c-b50c-3fab8bf0dc01 · Nov 5
£4,114 GBP
$5,506 USD
View
18 more retailers have this diamond
Prices start from £2,114 GBPSave up to £1,999 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
£2,114 GBP