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Heart|Natural|GIA

1.22ct J SI1 Heart Natural Diamond

ID • J/SI1 • GIA 1545621979

Certificate GIA 1545621979

Diamond specifications and retailer prices

From £1,544 GBP
As of November 6, 2026
Save £2,584 GBP (63%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,128 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.22ct natural heart diamond

This 1.22ct natural heart sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545621979. Listed at 16 retailers as of November 5, 2026, with prices from £1,544 to £4,128, a £2,584 spread on the same certified stone. NZ Jewellers lists it at £4,128. 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

1.22
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545621979
Dimensions7.34 × 6.64 × 4.27 mm
L/W Ratio1.11
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Needle
Top View
7.34 mm6.64 mm1.22 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1545621979
Side View
Table 63.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 58.2%

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: £4,128 GBP|Low: £1,538 GBP|High: £4,128 GBP|Avg: £2,293 GBP|+1.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 4£1,544 GBP
Retailer 8£1,789 GBP
Retailer 10£1,789 GBP
Retailer 12£1,825 GBP
Retailer 9£1,872 GBP
Retailer 2£1,915 GBP
Retailer 3£1,950 GBP
Retailer 11£2,064 GBP
Retailer 6£2,409 GBP
Retailer 5£2,451 GBP
Retailer 7£3,449 GBP
NZ Jewellers£4,128 GBP

45 data points across 12 retailers

16 retailers£1,544 GBP to £4,128 GBP

B+
Cheapest Retailer
-
£1,544 GBP
B+
Retailer 2
-
£1,789 GBP
View
Retailer 3
-
£1,789 GBP
View
Price last confirmed 9 days ago
B+
Retailer 4
-
£1,825 GBP
View
B
Retailer 5
-
£1,872 GBP
View
B
Retailer 6
-
£1,875 GBP
View
B+
Retailer 7
-
£1,915 GBP
View
B+
Retailer 8
-
£1,950 GBP
View
B
Retailer 9
-
£2,055 GBP
View
B
Retailer 10
-
£2,055 GBP
View
B
Retailer 11
-
£2,064 GBP
View
B
Retailer 12
-
£2,122 GBP
View
B
Retailer 13
-
£2,409 GBP
View
B
Retailer 14
-
£2,451 GBP
View
B
Retailer 15
-
£3,449 GBP
View
Most Expensive
B
NZ Jewellers
c66c0cd1-bcba-4da9-9247-578968bc5951 · Nov 5
£4,128 GBP
$5,525 USD
View
15 more retailers have this diamond
Prices start from £1,544 GBPSave up to £2,584 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+
1.22ct Heart
£1,544 GBP