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Heart|Natural|GIA

1.20ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 6422090307

Certificate GIA 6422090307

Diamond specifications and retailer prices

From £1,676 GBP
As of November 6, 2026
Save £3,024 GBP (64%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,699 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6422090307. Listed at 12 retailers as of November 5, 2026, with prices from £1,676 to £4,699, a £3,024 spread on the same certified stone. NZ Jewellers lists it at £4,699. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6422090307
Dimensions6.12 × 7.36 × 4.30 mm
L/W Ratio1.20
Top View
6.12 mm7.36 mm1.20 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6422090307
Side View
Table 58.0%CrownGirdle: MED-XTKPavilionCulet: NoneDepth 58.4%

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: Nov 6
Current: £4,699 GBP|Low: £1,594 GBP|High: £4,699 GBP|Avg: £2,497 GBP|+5.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 2£1,676 GBP
Retailer 8£1,919 GBP
Retailer 10£2,013 GBP
Retailer 12£2,075 GBP
Retailer 4£2,122 GBP
Retailer 5£2,210 GBP
Retailer 9£2,248 GBP
Retailer 3£2,334 GBP
Retailer 6£2,380 GBP
Retailer 7£2,593 GBP
Retailer 11£3,706 GBP
NZ Jewellers£4,699 GBP

35 data points across 12 retailers

12 retailers£1,676 GBP to £4,699 GBP

B+
Cheapest Retailer
-
£1,676 GBP
B+
Retailer 2
-
£1,919 GBP
View
B+
Retailer 3
-
£2,013 GBP
View
B
Retailer 4
-
£2,075 GBP
View
Final sale: no returns
Retailer 5
-
£2,122 GBP
View
Price last confirmed 9 days ago
B+
Retailer 6
-
£2,210 GBP
View
B+
Retailer 7
-
£2,248 GBP
View
B+
Retailer 8
-
£2,334 GBP
View
B
Retailer 9
-
£2,380 GBP
View
B
Retailer 10
-
£2,593 GBP
View
B
Retailer 11
-
£3,706 GBP
View
Most Expensive
B
NZ Jewellers
8ce1fcd6-cc2f-4563-9968-b62cf6108b04 · Nov 5
£4,699 GBP
$6,290 USD
View
11 more retailers have this diamond
Prices start from £1,676 GBPSave up to £3,024 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+
1.20ct Heart
£1,676 GBP