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Heart|Natural|GIA

1.20ct I SI1 Heart Natural Diamond

VG • I/SI1 • GIA 6471259389

Certificate GIA 6471259389

Diamond specifications and retailer prices

From £1,235 GBP
As of November 4, 2026
Save £1,379 GBP (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,614 GBP at MOH London · As of November 4, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6471259389. Listed at 14 retailers as of November 4, 2026, with prices from £1,235 to £2,614, a £1,379 spread on the same certified stone. MOH London lists it at £2,614. 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
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6471259389
Dimensions6.25 × 5.72 × 4.10 mm
L/W Ratio1.09
Top View
6.25 mm5.72 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6471259389
Side View
Table 60.0%CrownGirdle: ThickPavilionCulet: NoneDepth 71.6%

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 4
Current: £2,614 GBP|Low: £1,042 GBP|High: £2,652 GBP|Avg: £1,653 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8£1,251 GBP
Retailer 7£1,251 GBP
Retailer 10£1,355 GBP
Retailer 3£1,397 GBP
Retailer 11£1,405 GBP
Retailer 6£1,624 GBP
Retailer 2£1,655 GBP
Retailer 5£1,825 GBP
Retailer 9£1,844 GBP
Retailer 4£2,032 GBP
MOH London£2,614 GBP

45 data points across 11 retailers

14 retailers£1,235 GBP to £2,614 GBP

A
Cheapest Retailer
-
£1,235 GBP
A
Retailer 2
-
£1,251 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,251 GBP
View
A
Retailer 4
-
£1,272 GBP
View
Retailer 5
-
£1,355 GBP
View
Price last confirmed 9 days ago
B+
Retailer 6
-
£1,397 GBP
View
B+
Retailer 7
-
£1,405 GBP
View
B+
Retailer 8
-
£1,470 GBP
View
B+
Retailer 9
-
£1,624 GBP
View
B+
Retailer 10
-
£1,655 GBP
View
B+
Retailer 11
-
£1,825 GBP
View
Retailer 12
-
£1,844 GBP
View
Price last confirmed 33 days ago
B
Retailer 13
-
£2,032 GBP
View
Most Expensive
B
MOH London
E5159E46A · Nov 4
£2,614 GBP
View
13 more retailers have this diamond
Prices start from £1,235 GBPSave up to £1,379 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
£1,235 GBP