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Heart|Natural|GIA

1.20ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 6305303260

Certificate GIA 6305303260

Diamond specifications and retailer prices

From £1,762 GBP
As of November 4, 2026
Save £2,044 GBP (54%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £3,806 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 6305303260. Listed at 4 retailers as of November 2, 2026, with prices from £1,762 to £3,806, a £2,044 spread on the same certified stone. MOH London lists it at £3,806. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6305303260
Dimensions6.08 × 7.31 × 4.32 mm
L/W Ratio1.20
Top View
6.08 mm7.31 mm1.20 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6305303260
Side View
Table 61.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 59.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 4
Current: £3,806 GBP|Low: £2,253 GBP|High: £3,852 GBP|Avg: £2,778 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 3£2,253 GBP
Retailer 2£2,375 GBP
Retailer 4£2,603 GBP
MOH London£3,806 GBP

36 data points across 4 retailers

4 retailers£1,762 GBP to £3,806 GBP

B+
Cheapest Retailer
-
£1,762 GBP
B
Retailer 2
-
£2,253 GBP
View
B
Retailer 3
-
£2,375 GBP
View
Most Expensive
B
MOH London
39260F071 · Nov 2
£3,806 GBP
View
3 more retailers have this diamond
Prices start from £1,762 GBPSave up to £2,044 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
£1,762 GBP