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Heart|Natural|GIA

1.21ct J IF Heart Natural Diamond

EX • J/IF • GIA 6233888573

Certificate GIA 6233888573

Diamond specifications and retailer prices

From £1,300 GBP
As of November 6, 2026
Save £1,969 GBP (60%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,142 GBP at NZ Jewellers · As of September 25, 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 J colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6233888573. Listed at 14 retailers as of November 4, 2026, with a 151% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
J
Colour
IF
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle43.5°
OriginNatural
Grading LabGIA
CertificateGIA 6233888573
Dimensions6.09 × 7.28 × 4.63 mm
L/W Ratio1.20
Top View
6.09 mm7.28 mm1.21 ctJ / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6233888573
Side View
Table 58.0%CrownGirdle: STK-THKPavilion 43.5°Culet: NoneDepth 63.6%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £1,728 GBP|Low: £1,281 GBP|High: £3,508 GBP|Avg: £2,053 GBP|-2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 11£1,300 GBP
Retailer 8£1,641 GBP
Retailer 12£1,727 GBP
Retailer 1£1,728 GBP
Retailer 5£1,806 GBP
Retailer 3£1,844 GBP
Retailer 10£1,857 GBP
Retailer 2£2,025 GBP
Retailer 4£2,158 GBP
Retailer 6£2,283 GBP
Retailer 9£2,744 GBP
Retailer 7£3,269 GBP

38 data points across 12 retailers

14 retailers£1,300 GBP to £3,269 GBP

A
Cheapest Retailer
-
£1,300 GBP
A
Retailer 2
-
£1,641 GBP
View
B+
Retailer 3
-
£1,727 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,728 GBP
View
B+
Retailer 5
-
£1,806 GBP
View
B+
Retailer 6
-
£1,844 GBP
View
B+
Retailer 7
-
£1,857 GBP
View
B+
Retailer 8
-
£2,014 GBP
View
B+
Retailer 9
-
£2,025 GBP
View
Retailer 10
-
£2,158 GBP
View
Price last confirmed 31 days ago
B+
Retailer 11
-
£2,283 GBP
View
B+
Retailer 12
-
£2,744 GBP
View
B
Retailer 13
-
£3,269 GBP
View
Most Expensive
NZ Jewellers
f2d8670a-b951-4523-b930-6f0b80e5dcb6 · Sep 25
£4,142 GBP
$5,544 USD
View
Price last confirmed 42 days ago
13 more retailers have this diamond
Prices start from £1,300 GBPSave up to £1,969 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
£1,300 GBP