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Heart|Natural|GIA

1.00ct I SI2 Heart Natural Diamond

VG • I/SI2 • GIA 3445898638

Certificate GIA 3445898638

Diamond specifications and retailer prices

From £1,424 GBP
As of November 6, 2026
Save £1,165 GBP (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,158 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 3445898638. Listed at 13 retailers as of November 6, 2026, with a 82% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.00
Carat
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle31.3°
Pavilion angle39.7°
OriginNatural
Grading LabGIA
CertificateGIA 3445898638
Dimensions5.74 × 5.68 × 3.94 mm
L/W Ratio1.01
Top View
5.74 mm5.68 mm1.00 ctI / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 3445898638
Side View
Table 68.0%Crown 31.3°Girdle: MediumPavilion 39.7°Culet: NoneDepth 69.2%

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 6
Current: £3,158 GBP|Low: £1,295 GBP|High: £3,192 GBP|Avg: £1,861 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8£1,424 GBP
Retailer 2£1,473 GBP
Retailer 5£1,502 GBP
Retailer 6£1,505 GBP
Retailer 9£1,587 GBP
Retailer 7£1,631 GBP
Retailer 4£1,904 GBP
Retailer 3£2,235 GBP
MOH London£3,158 GBP

44 data points across 9 retailers

13 retailers£1,424 GBP to £2,589 GBP

B+
Cheapest Retailer
-
£1,424 GBP
B+
Retailer 2
-
£1,471 GBP
View
B+
Retailer 3
-
£1,473 GBP
View
B+
Retailer 4
-
£1,502 GBP
View
B
Retailer 5
-
£1,505 GBP
View
Final sale: no returns
B+
Retailer 6
-
£1,535 GBP
View
B
Retailer 7
-
£1,587 GBP
View
Retailer 8
-
£1,631 GBP
View
Price last confirmed 8 days ago
B
Retailer 9
-
£1,778 GBP
View
B
Retailer 10
-
£1,904 GBP
View
B
Retailer 11
-
£2,235 GBP
View
C
Retailer 12
-
£2,589 GBP
View
Most Expensive
MOH London
69FB234A2 · Oct 25
£3,158 GBP
View
Price last confirmed 12 days ago
12 more retailers have this diamond
Prices start from £1,424 GBPSave up to £1,165 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+
1.00ct Heart
£1,424 GBP