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Heart|Natural|GIA

1.23ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 6237766192

Certificate GIA 6237766192

Diamond specifications and retailer prices

From £2,223 GBP
$2,983 USD
As of November 1, 2026
Save £2,400 GBP (52%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,623 GBP at MOH London · As of November 1, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6237766192. Listed at 11 retailers as of November 1, 2026, with prices from £2,223 to £4,623, a £2,400 spread on the same certified stone. MOH London lists it at £4,623. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.23
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6237766192
Dimensions7.32 × 5.50 × 3.71 mm
L/W Ratio1.33
Culet sizeNone
Top View
7.32 mm5.50 mm1.23 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6237766192
Side View
Table 70.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 67.5%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £4,623 GBP|Low: £2,223 GBP|High: £4,672 GBP|Avg: £2,974 GBP|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 10£2,223 GBP
Retailer 7£2,265 GBP
Retailer 11£2,282 GBP
Retailer 8£2,373 GBP
Retailer 12£2,514 GBP
Retailer 2£2,733 GBP
Retailer 6£2,889 GBP
Retailer 3£3,130 GBP
Retailer 5£3,235 GBP
Retailer 4£3,443 GBP
Retailer 9£4,033 GBP
MOH London£4,623 GBP

20 data points across 12 retailers

11 retailers£2,223 GBP to £4,623 GBP

B+
Cheapest Retailer
-
£2,223 GBP
$2,983 USD
B+
Retailer 2
-
£2,265 GBP
$3,040 USD
View
B+
Retailer 3
-
£2,282 GBP
$3,062 USD
View
B+
Retailer 4
-
£2,373 GBP
$3,185 USD
View
B
Retailer 5
-
£2,514 GBP
$3,373 USD
View
B
Retailer 6
-
£2,733 GBP
View
B
Retailer 7
-
£2,889 GBP
View
Retailer 8
-
£3,130 GBP
$4,200 USD
View
Price last confirmed 10 days ago
B
Retailer 9
-
£3,235 GBP
€4,135 EUR
View
B
Retailer 10
-
£4,033 GBP
$5,412 USD
View
Most Expensive
B
MOH London
424A08179 · Nov 1
£4,623 GBP
View
10 more retailers have this diamond
Prices start from £2,223 GBPSave up to £2,400 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
£2,223 GBP