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Heart|Natural|GIA

1.21ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 6541016689

Certificate GIA 6541016689

Diamond specifications and retailer prices

From £1,070 GBP
As of November 6, 2026
Save £2,436 GBP (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,505 GBP at NZ Jewellers · As of November 5, 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 I 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 6541016689. Listed at 15 retailers as of November 5, 2026, with prices from £1,070 to £3,505, a £2,436 spread on the same certified stone. NZ Jewellers lists it at £3,505. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6541016689
Dimensions6.50 × 7.27 × 4.26 mm
L/W Ratio1.12
Top View
6.50 mm7.27 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541016689
Side View
Table 60.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.6%

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: £3,505 GBP|Low: £1,070 GBP|High: £3,505 GBP|Avg: £1,677 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
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 2£1,070 GBP
Retailer 6£1,133 GBP
Retailer 3£1,310 GBP
Retailer 9£1,413 GBP
Retailer 7£1,437 GBP
Retailer 16£1,437 GBP
Retailer 14£1,449 GBP
Retailer 13£1,503 GBP
Retailer 4£1,540 GBP
Retailer 5£1,552 GBP
Retailer 10£1,561 GBP
Retailer 12£1,574 GBP
Retailer 15£1,658 GBP
Retailer 8£2,079 GBP
Retailer 11£2,511 GBP
NZ Jewellers£3,505 GBP

28 data points across 16 retailers

15 retailers£1,070 GBP to £3,505 GBP

A
Cheapest Retailer
-
£1,070 GBP
A
Retailer 2
-
£1,133 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,310 GBP
View
A
Retailer 4
-
£1,413 GBP
View
A
Retailer 5
-
£1,437 GBP
View
Retailer 6
-
£1,437 GBP
View
Price last confirmed 9 days ago
A
Retailer 7
-
£1,449 GBP
View
B+
Retailer 8
-
£1,503 GBP
View
B+
Retailer 9
-
£1,540 GBP
View
B+
Retailer 10
-
£1,552 GBP
View
B+
Retailer 11
-
£1,561 GBP
View
B+
Retailer 12
-
£1,574 GBP
View
B+
Retailer 13
-
£1,658 GBP
View
B
Retailer 14
-
£2,511 GBP
View
Most Expensive
B
NZ Jewellers
38aabdc7-25f6-4010-aac9-c88f086b3951 · Nov 5
£3,505 GBP
$4,692 USD
View
14 more retailers have this diamond
Prices start from £1,070 GBPSave up to £2,436 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
£1,070 GBP