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Heart|Natural|GIA

1.23ct J SI2 Heart Natural Diamond

VG • J/SI2 • GIA 6252782597

Certificate GIA 6252782597

Diamond specifications and retailer prices

From £2,826 GBP
As of November 5, 2026
Save £1,683 GBP (37%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £4,510 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.23ct natural heart diamond

This 1.23ct natural heart sits in the classic one-carat band, graded J 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 6252782597. Listed at 3 retailers as of November 4, 2026, with prices from £2,826 to £4,510, a £1,683 spread on the same certified stone. MOH London lists it at £4,510. 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

1.23
Carat
J
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6252782597
Dimensions5.99 × 5.83 × 4.07 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizeNone
Cert comments
Additional twinning wisps are not shown. Surface graining is not shown.
Top View
5.99 mm5.83 mm1.23 ctJ / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6252782597
Side View
Table 64.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 69.8%

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: £4,510 GBP|Low: £2,767 GBP|High: £4,576 GBP|Avg: £3,505 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
November 6, 2026
Retailer 3£2,826 GBP
Retailer 2£3,148 GBP
MOH London£4,510 GBP

43 data points across 3 retailers

3 retailers£2,826 GBP to £4,510 GBP

B
Cheapest Retailer
-
£2,826 GBP
B
Retailer 2
-
£3,148 GBP
View
Most Expensive
C
MOH London
26AEA4337 · Nov 4
£4,510 GBP
View
2 more retailers have this diamond
Prices start from £2,826 GBPSave up to £1,683 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
1.23ct Heart
£2,826 GBP