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Heart|Natural|GIA

1.20ct J SI1 Heart Natural Diamond

GD • J/SI1 • GIA 6361749218

Certificate GIA 6361749218

Diamond specifications and retailer prices

From £1,596 GBP
As of November 5, 2026
Save £2,022 GBP (56%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,618 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6361749218. Listed at 17 retailers as of November 2, 2026, with prices from £1,596 to £3,618, a £2,022 spread on the same certified stone. MOH London lists it at £3,618. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6361749218
Dimensions6.14 × 5.81 × 3.95 mm
L/W Ratio1.06
Top View
6.14 mm5.81 mm1.20 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6361749218
Side View
Table 59.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.0%

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 5
Current: £3,618 GBP|Low: £1,538 GBP|High: £3,662 GBP|Avg: £2,151 GBP
MOH London
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 7£1,596 GBP
Retailer 12£1,690 GBP
Retailer 8£1,700 GBP
Retailer 4£1,804 GBP
Retailer 11£1,857 GBP
Retailer 9£1,871 GBP
Retailer 3£1,903 GBP
Retailer 10£1,906 GBP
Retailer 13£2,121 GBP
Retailer 5£2,313 GBP
Retailer 2£2,403 GBP
Retailer 6£2,520 GBP
MOH London£3,618 GBP

45 data points across 13 retailers

17 retailers£1,596 GBP to £3,618 GBP

B+
Cheapest Retailer
-
£1,596 GBP
B
Retailer 2
-
£1,681 GBP
View
B
Retailer 3
-
£1,681 GBP
View
B
Retailer 4
-
£1,690 GBP
View
B+
Retailer 5
-
£1,700 GBP
View
B
Retailer 6
-
£1,741 GBP
View
B
Retailer 7
-
£1,804 GBP
View
B
Retailer 8
-
£1,857 GBP
View
Retailer 9
-
£1,871 GBP
View
Price last confirmed 9 days ago
B
Retailer 10
-
£1,903 GBP
View
B
Retailer 11
-
£1,906 GBP
View
Final sale: no returns
B
Retailer 12
-
£2,106 GBP
View
B
Retailer 13
-
£2,121 GBP
View
Retailer 14
-
£2,313 GBP
View
Price last confirmed 31 days ago
B
Retailer 15
-
£2,403 GBP
View
B
Retailer 16
-
£2,520 GBP
View
Most Expensive
C
MOH London
D0F9EF9C1 · Nov 2
£3,618 GBP
View
16 more retailers have this diamond
Prices start from £1,596 GBPSave up to £2,022 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
£1,596 GBP