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Heart|Natural|GIA

1.28ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 1459480283

Certificate GIA 1459480283

Diamond specifications and retailer prices

From £4,182 GBP
As of November 4, 2026
Save £3,494 GBP (46%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £7,676 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.28ct natural heart diamond

This 1.28ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1459480283. Listed at 10 retailers as of November 4, 2026, with prices from £4,182 to £7,676, a £3,494 spread on the same certified stone. MOH London lists it at £7,676. 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

1.28
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1459480283
Dimensions7.08 × 6.17 × 4.06 mm
L/W Ratio1.15
Girdle conditionFaceted
Top View
7.08 mm6.17 mm1.28 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1459480283
Side View
Table 68.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 65.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £7,676 GBP|Low: £4,019 GBP|High: £7,790 GBP|Avg: £5,803 GBP|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6£4,823 GBP
Retailer 5£5,071 GBP
Retailer 3£5,391 GBP
Retailer 2£5,675 GBP
Retailer 4£6,374 GBP
MOH London£7,676 GBP

42 data points across 6 retailers

10 retailers£4,182 GBP to £7,676 GBP

B
Cheapest Retailer
-
£4,182 GBP
B
Retailer 2
-
£4,556 GBP
View
B
Retailer 3
-
£4,823 GBP
View
Final sale: no returns
B
Retailer 4
-
£4,838 GBP
View
Retailer 5
-
£5,071 GBP
View
Price last confirmed 16 days ago
B
Retailer 6
-
£5,344 GBP
View
B
Retailer 7
-
£5,391 GBP
View
B
Retailer 8
-
£5,675 GBP
View
B
Retailer 9
-
£6,374 GBP
View
Most Expensive
B
MOH London
60CB03D78 · Nov 4
£7,676 GBP
View
9 more retailers have this diamond
Prices start from £4,182 GBPSave up to £3,494 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
1.28ct Heart
£4,182 GBP