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Heart|Natural|GIA

1.21ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 5426090686

Certificate GIA 5426090686

Diamond specifications and retailer prices

From £1,965 GBP
$2,633 USD
As of October 31, 2026
Save £2,495 GBP (56%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £4,460 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 5426090686. Listed at 25 retailers as of October 30, 2026, with prices from £1,965 to £4,460, a £2,495 spread on the same certified stone. NZ Jewellers lists it at £4,460. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5426090686
Dimensions6.59 × 7.07 × 4.31 mm
L/W Ratio1.07
Top View
6.59 mm7.07 mm1.21 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 5426090686
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 60.9%

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: Oct 31
Current: £2,531 GBP|Low: £1,998 GBP|High: £4,333 GBP|Avg: £2,606 GBP|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 3£1,998 GBP
Retailer 9£2,034 GBP
Retailer 7£2,077 GBP
Retailer 8£2,179 GBP
Retailer 11£2,320 GBP
Retailer 10£2,408 GBP
Retailer 2£2,497 GBP
Retailer 1£2,531 GBP
Retailer 5£2,675 GBP
Retailer 4£2,996 GBP
Retailer 6£4,281 GBP

41 data points across 11 retailers

25 retailers£1,965 GBP to £4,460 GBP

B+
Cheapest Retailer
-
£1,965 GBP
$2,633 USD
B+
Retailer 2
-
£1,998 GBP
$2,677 USD
View
B+
Retailer 3
-
£2,034 GBP
$2,725 USD
View
Final sale: no returns
B+
Retailer 4
-
£2,051 GBP
$2,748 USD
View
B+
Retailer 5
-
£2,077 GBP
$2,783 USD
View
B+
Retailer 6
-
£2,179 GBP
$2,919 USD
View
B
Retailer 7
-
£2,320 GBP
$3,108 USD
View
B
Retailer 8
-
£2,320 GBP
$3,108 USD
View
B
Retailer 9
-
£2,335 GBP
$3,129 USD
View
B
Retailer 10
-
£2,371 GBP
CA$4,411 CAD
View
B
Retailer 11
-
£2,408 GBP
$3,227 USD
View
B
Retailer 12
-
£2,497 GBP
$3,346 USD
View
B
Retailer 13
-
£2,520 GBP
$3,376 USD
View
B
Retailer 14
-
£2,531 GBP
View
B
Retailer 15
-
£2,635 GBP
$3,530 USD
View
B
Retailer 16
-
£2,635 GBP
$3,530 USD
View
B
Retailer 17
-
£2,675 GBP
View
B
Retailer 18
-
£2,676 GBP
$3,586 USD
View
B
Retailer 19
-
£2,724 GBP
$3,650 USD
View
Retailer 20
-
£2,901 GBP
$3,887 USD
View
Price last confirmed 10 days ago
B
Retailer 21
-
£2,996 GBP
€3,823 EUR
View
B
Retailer 22
-
£3,007 GBP
$4,029 USD
View
B
Retailer 23
-
£3,695 GBP
$4,951 USD
View
B
Retailer 24
-
£4,281 GBP
View
Most Expensive
B
NZ Jewellers
b2c6f282-9c68-4ba7-94d9-d58a71100785 · Oct 30
£4,460 GBP
$5,976 USD
View
24 more retailers have this diamond
Prices start from £1,965 GBPSave up to £2,495 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
£1,965 GBP