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Heart|Natural|GIA

1.20ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6535356516

Certificate GIA 6535356516

Diamond specifications and retailer prices

From £2,180 GBP
As of November 6, 2026
Save £1,385 GBP (39%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £5,089 GBP at NZ Jewellers · As of October 30, 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 G 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 6535356516. Listed at 19 retailers as of November 5, 2026, with a 64% 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6535356516
Dimensions6.31 × 7.17 × 4.53 mm
L/W Ratio1.14
Top View
6.31 mm7.17 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535356516
Side View
Table 56.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.1%

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: £2,751 GBP|Low: £2,161 GBP|High: £4,944 GBP|Avg: £3,018 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 9£2,180 GBP
Retailer 2£2,495 GBP
Retailer 8£2,571 GBP
Retailer 5£2,589 GBP
Retailer 11£2,696 GBP
Retailer 13£2,743 GBP
Retailer 1£2,751 GBP
Retailer 6£2,959 GBP
Retailer 4£3,030 GBP
Retailer 12£3,132 GBP
Retailer 3£3,136 GBP
Retailer 7£3,565 GBP
Retailer 10£4,892 GBP

43 data points across 13 retailers

19 retailers£2,180 GBP to £3,565 GBP

B+
Cheapest Retailer
-
£2,180 GBP
Retailer 2
-
£2,495 GBP
View
Price last confirmed 8 days ago
B+
Retailer 3
-
£2,571 GBP
View
B
Retailer 4
-
£2,696 GBP
View
Final sale: no returns
B
Retailer 5
-
£2,743 GBP
View
B
Retailer 6
-
£2,751 GBP
View
B
Retailer 7
-
£2,790 GBP
View
Retailer 8
-
£2,921 GBP
View
Price last confirmed 9 days ago
Retailer 9
-
£2,921 GBP
View
Price last confirmed 9 days ago
Retailer 10
-
£2,921 GBP
View
Price last confirmed 9 days ago
B
Retailer 11
-
£2,959 GBP
View
B
Retailer 12
-
£3,030 GBP
View
Retailer 13
-
£3,132 GBP
View
Price last confirmed 34 days ago
B
Retailer 14
-
£3,136 GBP
View
B
Retailer 15
-
£3,371 GBP
View
B
Retailer 16
-
£3,371 GBP
View
B
Retailer 17
-
£3,565 GBP
View
Retailer 18
-
£4,892 GBP
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
35c1ecc9-184e-4d71-b1db-0a13968a14e5 · Oct 30
£5,089 GBP
$6,812 USD
View
Price last confirmed 7 days ago
18 more retailers have this diamond
Prices start from £2,180 GBPSave up to £1,385 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
£2,180 GBP