CaratHunter
Plans
Heart|Natural|GIA

1.21ct H SI2 Heart Natural Diamond

ID • H/SI2 • GIA 2548637874

Certificate GIA 2548637874

Diamond specifications and retailer prices

From £1,499 GBP
$2,008 USD
As of November 1, 2026
Save £2,509 GBP (63%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,008 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2548637874. Listed at 16 retailers as of October 30, 2026, with prices from £1,499 to £4,008, a £2,509 spread on the same certified stone. NZ Jewellers lists it at £4,008. 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
H
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2548637874
Dimensions7.14 × 6.45 × 4.30 mm
L/W Ratio1.11
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Indented Natural
Top View
7.14 mm6.45 mm1.21 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2548637874
Side View
Table 61.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 60.2%

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 1
Current: £4,008 GBP|Low: £1,323 GBP|High: £4,008 GBP|Avg: £2,101 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 4£1,499 GBP
Retailer 10£1,514 GBP
Retailer 16£1,588 GBP
Retailer 11£1,737 GBP
Retailer 13£1,737 GBP
Retailer 12£1,817 GBP
Retailer 5£1,821 GBP
Retailer 2£1,895 GBP
Retailer 3£1,896 GBP
Retailer 7£2,000 GBP
Retailer 8£2,000 GBP
Retailer 15£2,004 GBP
Retailer 6£2,067 GBP
Retailer 9£2,393 GBP
Retailer 14£3,377 GBP
NZ Jewellers£4,008 GBP

45 data points across 16 retailers

16 retailers£1,499 GBP to £4,008 GBP

A
Cheapest Retailer
-
£1,499 GBP
$2,008 USD
A
Retailer 2
-
£1,514 GBP
$2,028 USD
View
A
Retailer 3
-
£1,588 GBP
$2,128 USD
View
Final sale: no returns
B+
Retailer 4
-
£1,737 GBP
$2,327 USD
View
B+
Retailer 5
-
£1,737 GBP
$2,327 USD
View
B+
Retailer 6
-
£1,817 GBP
$2,434 USD
View
B+
Retailer 7
-
£1,821 GBP
$2,440 USD
View
B+
Retailer 8
-
£1,895 GBP
View
B+
Retailer 9
-
£1,896 GBP
$2,540 USD
View
B+
Retailer 10
-
£2,000 GBP
$2,680 USD
View
B+
Retailer 11
-
£2,000 GBP
$2,680 USD
View
B+
Retailer 12
-
£2,004 GBP
$2,685 USD
View
B+
Retailer 13
-
£2,067 GBP
$2,770 USD
View
B+
Retailer 14
-
£2,393 GBP
€3,054 EUR
View
B
Retailer 15
-
£3,377 GBP
View
Most Expensive
B
NZ Jewellers
16db4d77-b7d0-4106-b007-8ab322cb2121 · Oct 30
£4,008 GBP
$5,370 USD
View
15 more retailers have this diamond
Prices start from £1,499 GBPSave up to £2,509 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
£1,499 GBP