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Heart|Natural|GIA

1.25ct I SI2 Heart Natural Diamond

VG • I/SI2 • GIA 2151070667

Certificate GIA 2151070667

Diamond specifications and retailer prices

From £3,146 GBP
As of November 5, 2026
Save £1,981 GBP (39%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £5,127 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.25ct natural heart diamond

This 1.25ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2151070667. Listed at 3 retailers as of November 4, 2026, with prices from £3,146 to £5,127, a £1,981 spread on the same certified stone. MOH London lists it at £5,127. 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

1.25
Carat
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2151070667
Dimensions6.01 × 5.95 × 4.16 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Cert comments
Clouds, pinpoints and surface graining are not shown.
Top View
6.01 mm5.95 mm1.25 ctI / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2151070667
Side View
Table 69.0%CrownGirdle: THN-ETKPavilionCulet: NoneDepth 69.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: £5,127 GBP|Low: £3,091 GBP|High: £5,203 GBP|Avg: £3,924 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
November 6, 2026
Retailer 3£3,146 GBP
Retailer 2£3,459 GBP
MOH London£5,127 GBP

43 data points across 3 retailers

3 retailers£3,146 GBP to £5,127 GBP

B
Cheapest Retailer
-
£3,146 GBP
B
Retailer 2
-
£3,459 GBP
View
Most Expensive
C
MOH London
547650E53 · Nov 4
£5,127 GBP
View
2 more retailers have this diamond
Prices start from £3,146 GBPSave up to £1,981 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
1.25ct Heart
£3,146 GBP