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Heart|Natural|GIA

1.23ct J SI2 Heart Natural Diamond

GD • J/SI2 • GIA 6197060931

Certificate GIA 6197060931

Diamond specifications and retailer prices

From £1,383 GBP
As of November 6, 2026
Save £700 GBP (34%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £2,083 GBP at 77 Diamonds · As of November 6, 2026
View at 77 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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6197060931. Listed at 3 retailers as of November 6, 2026, with prices from £1,383 to £2,083, a £700 spread on the same certified stone. 77 Diamonds lists it at £2,083. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishGood
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6197060931
Dimensions6.78 × 8.08 × 3.66 mm
L/W Ratio1.19
Top View
6.78 mm8.08 mm1.23 ctJ / SI2
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceFaint
CertificateGIA 6197060931
Side View
Table 68.0%CrownGirdlePavilionCuletDepth 45.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,083 GBP|Low: £1,383 GBP|High: £2,106 GBP|Avg: £1,638 GBP|+1.3%
77 Diamonds
Retailer 2
Retailer 3
November 6, 2026
Retailer 2£1,383 GBP
Retailer 3£1,439 GBP
77 Diamonds£2,083 GBP

37 data points across 3 retailers

3 retailers£1,383 GBP to £2,083 GBP

B+
Cheapest Retailer
-
£1,383 GBP
B
Retailer 2
-
£1,439 GBP
View
Most Expensive
C
77 Diamonds
HSMBKVD4R5RV · Nov 6
£2,083 GBP
View
2 more retailers have this diamond
Prices start from £1,383 GBPSave up to £700 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
£1,383 GBP