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Heart|Natural|GIA

1.23ct J SI1 Heart Natural Diamond

GD • J/SI1 • GIA 7438456731

Certificate GIA 7438456731

Diamond specifications and retailer prices

From £2,288 GBP
€2,917 EUR
As of November 5, 2026
1 retailer carries this diamond
Only listing: £2,288 GBP at Belgium Diamonds
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Belgium Diamonds

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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7438456731. Listed at a single retailer as of November 5, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7438456731
Dimensions6.30 × 5.93 × 4.03 mm
L/W Ratio1.06
Top View
6.30 mm5.93 mm1.23 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7438456731
Side View
Table 65.0%CrownGirdle: MediumPavilionCulet: NoneDepth 68.0%

Caratlytics Score

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C
Average
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Price History

Last verified: Nov 5
Current: £2,288 GBP|Low: £1,455 GBP|High: £2,630 GBP|Avg: £2,134 GBP
Belgium Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
June 1, 2026
Retailer 4£1,751 GBP
Retailer 2£1,874 GBP
Retailer 6£1,931 GBP
Retailer 5£1,995 GBP
Retailer 7£2,169 GBP
Retailer 3£2,197 GBP
Retailer 8£2,239 GBP
Belgium Diamonds£2,288 GBP

64 data points across 8 retailers

1 retailer

C
Belgium Diamonds
378814535 · Nov 5
£2,288 GBP
€2,917 EUR
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C
1.23ct Heart
£2,288 GBP