CaratHunter
Plans
Heart|Natural|GIA

1.21ct H SI2 Heart Natural Diamond

VG • H/SI2 • GIA 1156383057

Certificate GIA 1156383057

Diamond specifications and retailer prices

From £3,058 GBP
$4,097 USD
As of November 1, 2026
Save £1,034 GBP (25%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £6,546 GBP at NZ Jewellers · As of October 30, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1156383057. Listed at 13 retailers as of October 31, 2026, with a 34% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1156383057
Dimensions6.37 × 7.84 × 3.82 mm
L/W Ratio1.23
Culet sizeNone
Top View
6.37 mm7.84 mm1.21 ctH / SI2
OriginNatural
CutVery Good
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 1156383057
Side View
Table 66.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 48.8%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £6,546 GBP|Low: £3,349 GBP|High: £6,546 GBP|Avg: £4,294 GBP
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
November 2, 2026
Retailer 4£3,349 GBP
Retailer 7£3,546 GBP
Retailer 8£3,546 GBP
Retailer 9£3,546 GBP
Retailer 5£3,863 GBP
Retailer 2£3,907 GBP
Retailer 11£4,050 GBP
Retailer 3£4,088 GBP
Retailer 10£4,091 GBP
Retailer 12£4,320 GBP
Retailer 13£4,657 GBP
Retailer 6£6,234 GBP
NZ Jewellers£6,546 GBP

40 data points across 13 retailers

13 retailers£3,058 GBP to £4,091 GBP

B
Cheapest Retailer
-
£3,058 GBP
$4,097 USD
B
Retailer 2
-
£3,092 GBP
$4,143 USD
View
B
Retailer 3
-
£3,349 GBP
CA$6,233 CAD
View
C
Retailer 4
-
£3,546 GBP
$4,751 USD
View
C
Retailer 5
-
£3,546 GBP
$4,751 USD
View
C
Retailer 6
-
£3,546 GBP
$4,751 USD
View
C
Retailer 7
-
£3,863 GBP
$5,176 USD
View
C
Retailer 8
-
£3,907 GBP
View
C
Retailer 9
-
£4,050 GBP
$5,427 USD
View
C
Retailer 10
-
£4,091 GBP
$5,482 USD
View
Retailer 11
-
£4,320 GBP
$5,788 USD
View
Price last confirmed 10 days ago
Retailer 12
-
£6,234 GBP
View
Price under review
Most Expensive
NZ Jewellers
1bb0eaf2-3cf1-4bd8-af76-9583fc411974 · Oct 30
£6,546 GBP
$8,771 USD
View
Price under review
12 more retailers have this diamond
Prices start from £3,058 GBPSave up to £1,034 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
£3,058 GBP