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Heart|Natural|GIA

1.20ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 1232951516

Certificate GIA 1232951516

Diamond specifications and retailer prices

From £1,392 GBP
As of November 6, 2026
Save £840 GBP (38%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £2,232 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded I 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 1232951516. Listed at 6 retailers as of November 2, 2026, with prices from £1,392 to £2,232, a £840 spread on the same certified stone. MOH London lists it at £2,232. 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

1.20
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.61°
OriginNatural
Grading LabGIA
CertificateGIA 1232951516
Dimensions6.71 × 7.36 × 4.02 mm
L/W Ratio1.10
Top View
6.71 mm7.36 mm1.20 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1232951516
Side View
Table 57.0%Crown 37.61°Girdle: STK-THKPavilionCulet: NoneDepth 54.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,232 GBP|Low: £1,375 GBP|High: £2,661 GBP|Avg: £1,771 GBP|-15.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5£1,392 GBP
Retailer 4£1,402 GBP
Retailer 3£1,413 GBP
Retailer 6£1,524 GBP
Retailer 2£1,730 GBP
MOH London£2,232 GBP

44 data points across 6 retailers

6 retailers£1,392 GBP to £2,232 GBP

A
Cheapest Retailer
-
£1,392 GBP
A
Retailer 2
-
£1,402 GBP
View
A
Retailer 3
-
£1,413 GBP
View
Retailer 4
-
£1,524 GBP
View
Price last confirmed 15 days ago
B+
Retailer 5
-
£1,730 GBP
View
Most Expensive
B+
MOH London
3375B755D · Nov 2
£2,232 GBP
View
5 more retailers have this diamond
Prices start from £1,392 GBPSave up to £840 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.

A
1.20ct Heart
£1,392 GBP