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Heart|Natural|GIA

1.20ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 6552087009

Certificate GIA 6552087009

Diamond specifications and retailer prices

From £1,361 GBP
As of November 4, 2026
Save £2,236 GBP (62%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £3,597 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552087009. Listed at 5 retailers as of November 4, 2026, with prices from £1,361 to £3,597, a £2,236 spread on the same certified stone. NZ Jewellers lists it at £3,597. 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

1.20
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552087009
Dimensions6.42 × 7.58 × 4.09 mm
L/W Ratio1.18
Top View
6.42 mm7.58 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552087009
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 53.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £3,597 GBP|Low: £1,208 GBP|High: £3,597 GBP|Avg: £2,160 GBP|+2.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5£1,361 GBP
Retailer 2£1,431 GBP
Retailer 4£1,509 GBP
Retailer 6£2,343 GBP
Retailer 3£2,577 GBP
NZ Jewellers£3,597 GBP

42 data points across 6 retailers

5 retailers£1,361 GBP to £3,597 GBP

A
Cheapest Retailer
-
£1,361 GBP
Final sale: no returns
A
Retailer 2
-
£1,431 GBP
View
A
Retailer 3
-
£1,509 GBP
View
B
Retailer 4
-
£2,577 GBP
View
Most Expensive
B
NZ Jewellers
19059b44-8795-4d0d-99eb-d80d777cc9b3 · Nov 5
£3,597 GBP
$4,815 USD
View
4 more retailers have this diamond
Prices start from £1,361 GBPSave up to £2,236 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
1.20ct Heart
£1,361 GBP