CaratHunter
Plans
Heart|Natural|GIA

1.21ct F SI1 Heart Natural Diamond

FR • F/SI1 • GIA 7542186269

Certificate GIA 7542186269

Diamond specifications and retailer prices

From £1,822 GBP
As of November 5, 2026
Save £2,380 GBP (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £4,202 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 7542186269. Listed at 8 retailers as of November 5, 2026, with prices from £1,822 to £4,202, a £2,380 spread on the same certified stone. NZ Jewellers lists it at £4,202. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
F
Colour
SI1
Clarity
Fair
Cut (retailer stated)

Specifications

Cut (retailer stated)Fair
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7542186269
Dimensions6.00 × 7.14 × 4.57 mm
L/W Ratio1.19
Key to symbols
Crystal, Feather, Needle
Top View
6.00 mm7.14 mm1.21 ctF / SI1
OriginNatural
CutFair
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7542186269
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.0%

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: £4,202 GBP|Low: £1,655 GBP|High: £4,607 GBP|Avg: £2,834 GBP|-4.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 3£1,822 GBP
Retailer 7£2,182 GBP
Retailer 2£2,339 GBP
Retailer 6£2,412 GBP
Retailer 5£2,504 GBP
Retailer 4£2,608 GBP
Retailer 8£3,880 GBP
NZ Jewellers£4,202 GBP

44 data points across 8 retailers

8 retailers£1,822 GBP to £4,202 GBP

B+
Cheapest Retailer
-
£1,822 GBP
B
Retailer 2
-
£2,182 GBP
View
B
Retailer 3
-
£2,339 GBP
View
B
Retailer 4
-
£2,412 GBP
View
B
Retailer 5
-
£2,504 GBP
View
B
Retailer 6
-
£2,608 GBP
View
Retailer 7
-
£3,880 GBP
View
Price last confirmed 9 days ago
Most Expensive
C
NZ Jewellers
b43c8f4a-d904-4960-952b-3a72cded7e1b · Nov 5
£4,202 GBP
$5,624 USD
View
7 more retailers have this diamond
Prices start from £1,822 GBPSave up to £2,380 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
£1,822 GBP