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Heart|Natural|HRD

1.23ct I SI1 Heart Natural Diamond

GD • I/SI1 • HRD 180000005440

Shape and cutting style on the report: Heart

Certificate HRD 180000005440

Diamond specifications and retailer prices

From £2,845 GBP
As of November 5, 2026
Save £527 GBP (16%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £3,372 GBP at Yorxs · As of November 6, 2026
View at Yorxs

About this 1.23ct natural heart diamond

This 1.23ct natural heart sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by HRD 180000005440. Listed at 3 retailers as of November 5, 2026, with prices from £2,845 to £3,372, a £527 spread on the same certified stone. Yorxs lists it at £3,372. 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
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabHRD
CertificateHRD 180000005440
Dimensions6.67 × 6.59 × 3.49 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.67 mm6.59 mm1.23 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateHRD 180000005440
Side View
Table 67.0%CrownGirdlePavilionCulet: NoneDepth 53.0%

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: £3,252 GBP|Low: £3,041 GBP|High: £3,380 GBP|Avg: £3,218 GBP|+1.8%
Retailer 1
Retailer 2
Yorxs
November 7, 2026
Retailer 2£3,041 GBP
Retailer 1£3,252 GBP
Yorxs£3,372 GBP

41 data points across 3 retailers

3 retailers£2,845 GBP to £3,372 GBP

B
Cheapest Retailer
-
£2,845 GBP
C
Retailer 2
-
£3,252 GBP
View
Most Expensive
C
Yorxs
357010312 · Nov 6
£3,372 GBP
€4,298 EUR
View
2 more retailers have this diamond
Prices start from £2,845 GBPSave up to £527 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
£2,845 GBP