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Heart|Natural|GIA

1.21ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 5536547731

Certificate GIA 5536547731

Diamond specifications and retailer prices

From £1,736 GBP
As of November 6, 2026
Save £2,377 GBP (58%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,112 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5536547731. Listed at 16 retailers as of November 5, 2026, with prices from £1,736 to £4,112, a £2,377 spread on the same certified stone. NZ Jewellers lists it at £4,112. 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

1.21
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.93°
Pavilion angle37.8°
OriginNatural
Grading LabGIA
CertificateGIA 5536547731
Dimensions6.75 × 7.33 × 4.10 mm
L/W Ratio1.09
Top View
6.75 mm7.33 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5536547731
Side View
Table 58.0%Crown 38.93°Girdle: ThickPavilion 37.8°Culet: NoneDepth 55.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £4,112 GBP|Low: £1,736 GBP|High: £4,238 GBP|Avg: £2,376 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
November 6, 2026
Retailer 8£1,736 GBP
Retailer 2£1,789 GBP
Retailer 6£1,835 GBP
Retailer 5£1,901 GBP
Retailer 9£1,905 GBP
Retailer 3£1,967 GBP
Retailer 7£2,027 GBP
Retailer 4£2,043 GBP
Retailer 11£2,043 GBP
Retailer 12£2,050 GBP
Retailer 14£2,102 GBP
Retailer 13£2,236 GBP
Retailer 10£2,406 GBP
Retailer 15£3,436 GBP
NZ Jewellers£4,112 GBP

29 data points across 15 retailers

16 retailers£1,736 GBP to £4,112 GBP

A
Cheapest Retailer
-
£1,736 GBP
A
Retailer 2
-
£1,789 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,835 GBP
View
B+
Retailer 4
-
£1,901 GBP
View
B+
Retailer 5
-
£1,905 GBP
View
B+
Retailer 6
-
£1,967 GBP
View
Retailer 7
-
£2,027 GBP
View
Price last confirmed 9 days ago
Retailer 8
-
£2,027 GBP
View
Price last confirmed 22 days ago
B+
Retailer 9
-
£2,043 GBP
View
B+
Retailer 10
-
£2,043 GBP
View
B+
Retailer 11
-
£2,050 GBP
View
B+
Retailer 12
-
£2,102 GBP
View
B+
Retailer 13
-
£2,236 GBP
View
B+
Retailer 14
-
£2,406 GBP
View
B
Retailer 15
-
£3,436 GBP
View
Most Expensive
B
NZ Jewellers
2704d1ca-bb02-4ad5-89b1-f0c3c53b1006 · Nov 5
£4,112 GBP
$5,504 USD
View
15 more retailers have this diamond
Prices start from £1,736 GBPSave up to £2,377 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
1.21ct Heart
£1,736 GBP