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Heart|Natural|GIA

1.21ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 6561094441

Certificate GIA 6561094441

Diamond specifications and retailer prices

From £2,004 GBP
As of November 6, 2026
Save £1,953 GBP (49%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,957 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6561094441. Listed at 19 retailers as of November 5, 2026, with prices from £2,004 to £3,957, a £1,953 spread on the same certified stone. NZ Jewellers lists it at £3,957. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle36.11°
Pavilion angle42.09°
OriginNatural
Grading LabGIA
CertificateGIA 6561094441
Dimensions7.39 × 6.36 × 4.39 mm
L/W Ratio1.16
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.39 mm6.36 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6561094441
Side View
Table 58.0%Crown 36.11°Girdle: MED-THKPavilion 42.09°Culet: NoneDepth 59.4%

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: £3,957 GBP|Low: £2,004 GBP|High: £4,037 GBP|Avg: £2,691 GBP|-2.0%
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
November 6, 2026
Retailer 10£2,004 GBP
Retailer 5£2,036 GBP
Retailer 2£2,065 GBP
Retailer 8£2,167 GBP
Retailer 12£2,170 GBP
Retailer 6£2,271 GBP
Retailer 9£2,317 GBP
Retailer 14£2,343 GBP
Retailer 7£2,359 GBP
Retailer 15£2,368 GBP
Retailer 11£2,394 GBP
Retailer 3£2,412 GBP
Retailer 16£2,581 GBP
Retailer 13£2,604 GBP
Retailer 17£2,772 GBP
Retailer 4£3,787 GBP
NZ Jewellers£3,957 GBP

27 data points across 17 retailers

19 retailers£2,004 GBP to £3,957 GBP

B+
Cheapest Retailer
-
£2,004 GBP
B+
Retailer 2
-
£2,036 GBP
View
B+
Retailer 3
-
£2,065 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,167 GBP
View
B+
Retailer 5
-
£2,170 GBP
View
B+
Retailer 6
-
£2,223 GBP
View
B+
Retailer 7
-
£2,271 GBP
View
Retailer 8
-
£2,317 GBP
View
Price last confirmed 9 days ago
B+
Retailer 9
-
£2,343 GBP
View
B+
Retailer 10
-
£2,359 GBP
View
B+
Retailer 11
-
£2,368 GBP
View
B+
Retailer 12
-
£2,394 GBP
View
B+
Retailer 13
-
£2,412 GBP
View
Retailer 14
-
£2,474 GBP
View
Price last confirmed 31 days ago
B+
Retailer 15
-
£2,581 GBP
View
B+
Retailer 16
-
£2,604 GBP
View
B+
Retailer 17
-
£2,772 GBP
View
B
Retailer 18
-
£3,787 GBP
View
Most Expensive
B
NZ Jewellers
19966b7c-bd40-4d15-8f37-543c98a56741 · Nov 5
£3,957 GBP
$5,296 USD
View
18 more retailers have this diamond
Prices start from £2,004 GBPSave up to £1,953 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+
1.21ct Heart
£2,004 GBP