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Heart|Natural|GIA

1.20ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 2235360307

Certificate GIA 2235360307

Diamond specifications and retailer prices

From £1,940 GBP
As of November 4, 2026
Save £2,276 GBP (54%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,217 GBP at MOH London · As of November 4, 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 J 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 2235360307. Listed at 12 retailers as of November 4, 2026, with prices from £1,940 to £4,217, a £2,276 spread on the same certified stone. MOH London lists it at £4,217. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2235360307
Dimensions6.34 × 7.33 × 4.38 mm
L/W Ratio1.16
Culet sizeNone
Top View
6.34 mm7.33 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2235360307
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.8%

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 4
Current: £4,217 GBP|Low: £1,940 GBP|High: £4,279 GBP|Avg: £2,658 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6£1,940 GBP
Retailer 5£1,981 GBP
Retailer 8£2,340 GBP
Retailer 4£2,468 GBP
Retailer 2£2,580 GBP
Retailer 3£2,616 GBP
Retailer 7£2,722 GBP
MOH London£4,217 GBP

41 data points across 8 retailers

12 retailers£1,940 GBP to £4,217 GBP

B+
Cheapest Retailer
-
£1,940 GBP
B+
Retailer 2
-
£1,981 GBP
View
B+
Retailer 3
-
£2,025 GBP
View
B
Retailer 4
-
£2,340 GBP
View
B
Retailer 5
-
£2,468 GBP
View
B
Retailer 6
-
£2,488 GBP
View
B
Retailer 7
-
£2,580 GBP
View
B
Retailer 8
-
£2,600 GBP
View
B
Retailer 9
-
£2,600 GBP
View
B
Retailer 10
-
£2,616 GBP
View
B
Retailer 11
-
£2,690 GBP
View
Most Expensive
B
MOH London
FA2C9309B · Nov 4
£4,217 GBP
View
11 more retailers have this diamond
Prices start from £1,940 GBPSave up to £2,276 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+
1.20ct Heart
£1,940 GBP