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Heart|Natural|GIA

1.21ct H SI2 Heart Natural Diamond

ID • H/SI2 • GIA 7552655479

Certificate GIA 7552655479

Diamond specifications and retailer prices

From £1,256 GBP
₹160,295 INR
As of November 1, 2026
Save £2,195 GBP (64%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,451 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 7552655479. Listed at 9 retailers as of October 30, 2026, with prices from £1,256 to £3,451, a £2,195 spread on the same certified stone. NZ Jewellers lists it at £3,451. 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 7552655479
Dimensions6.53 × 7.37 × 4.29 mm
L/W Ratio1.13
Girdle conditionVery Thick
Top View
6.53 mm7.37 mm1.21 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7552655479
Side View
Table 57.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 58.2%

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: £3,451 GBP|Low: £1,233 GBP|High: £3,583 GBP|Avg: £1,967 GBP|-3.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 3£1,256 GBP
Retailer 8£1,322 GBP
Retailer 6£1,491 GBP
Retailer 9£1,567 GBP
Retailer 7£1,754 GBP
Retailer 2£1,811 GBP
Retailer 4£2,061 GBP
Retailer 5£2,896 GBP
NZ Jewellers£3,451 GBP

37 data points across 9 retailers

9 retailers£1,256 GBP to £3,451 GBP

A
Cheapest Retailer
-
£1,256 GBP
₹160,295 INR
A
Retailer 2
-
£1,322 GBP
$1,771 USD
View
Final sale: no returns
A
Retailer 3
-
£1,491 GBP
$1,998 USD
View
A
Retailer 4
-
£1,567 GBP
$2,099 USD
View
B+
Retailer 5
-
£1,754 GBP
$2,351 USD
View
B+
Retailer 6
-
£1,811 GBP
View
B+
Retailer 7
-
£2,061 GBP
€2,630 EUR
View
B
Retailer 8
-
£2,896 GBP
View
Most Expensive
B
NZ Jewellers
a65ae868-67a0-4d0a-a61a-3601b62aaffe · Oct 30
£3,451 GBP
$4,624 USD
View
8 more retailers have this diamond
Prices start from £1,256 GBPSave up to £2,195 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
£1,256 GBP