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Heart|Natural|GIA

1.21ct E SI2 Heart Natural Diamond

EX • E/SI2 • GIA 7556609189

Certificate GIA 7556609189

Diamond specifications and retailer prices

From £1,606 GBP
As of November 4, 2026
Save £1,435 GBP (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,638 GBP at NZ Jewellers · As of September 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 E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7556609189. Listed at 9 retailers as of November 4, 2026, with a 89% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 7556609189
Dimensions7.49 × 6.31 × 4.41 mm
L/W Ratio1.19
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
7.49 mm6.31 mm1.21 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 7556609189
Side View
Table 60.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 59.0%

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 4
Current: £2,161 GBP|Low: £1,473 GBP|High: £3,086 GBP|Avg: £2,075 GBP|+18.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4£1,606 GBP
Retailer 5£1,740 GBP
Retailer 2£1,891 GBP
Retailer 6£2,070 GBP
Retailer 1£2,161 GBP
Retailer 3£3,041 GBP

44 data points across 6 retailers

9 retailers£1,606 GBP to £3,041 GBP

A
Cheapest Retailer
-
£1,606 GBP
Final sale: no returns
Retailer 2
-
£1,740 GBP
View
Price last confirmed 29 days ago
Retailer 3
-
£1,740 GBP
View
Price last confirmed 29 days ago
Retailer 4
-
£1,821 GBP
View
Price last confirmed 36 days ago
A
Retailer 5
-
£1,891 GBP
View
Retailer 6
-
£2,008 GBP
View
Price last confirmed 38 days ago
B+
Retailer 7
-
£2,161 GBP
View
B
Retailer 8
-
£3,041 GBP
View
Most Expensive
NZ Jewellers
dd00f189-c98c-4daf-b410-3034eb64c36e · Sep 30
£3,638 GBP
$4,870 USD
View
Price last confirmed 37 days ago
8 more retailers have this diamond
Prices start from £1,606 GBPSave up to £1,435 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
£1,606 GBP