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Heart|Natural|GIA

1.51ct I SI1 Heart Natural Diamond

GD • I/SI1 • GIA 1483382477

Certificate GIA 1483382477

Diamond specifications and retailer prices

From £4,166 GBP
As of November 4, 2026
Save £3,581 GBP (46%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £7,747 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1483382477. Listed at 19 retailers as of November 4, 2026, with prices from £4,166 to £7,747, a £3,581 spread on the same certified stone. MOH London lists it at £7,747. 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

1.51
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1483382477
Dimensions6.95 × 6.68 × 4.49 mm
L/W Ratio1.04
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Natural
Top View
6.95 mm6.68 mm1.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1483382477
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.2%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £7,747 GBP|Low: £4,041 GBP|High: £7,862 GBP|Avg: £5,129 GBP|-1.2%
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 7, 2026
Retailer 3£4,166 GBP
Retailer 9£4,251 GBP
Retailer 11£4,409 GBP
Retailer 12£4,442 GBP
Retailer 4£4,446 GBP
Retailer 5£4,976 GBP
Retailer 2£5,020 GBP
Retailer 10£5,056 GBP
Retailer 8£5,117 GBP
Retailer 6£5,729 GBP
Retailer 7£6,433 GBP
MOH London£7,747 GBP

38 data points across 12 retailers

19 retailers£4,166 GBP to £7,747 GBP

B
Cheapest Retailer
-
£4,166 GBP
B
Retailer 2
-
£4,251 GBP
View
B
Retailer 3
-
£4,409 GBP
View
Final sale: no returns
B
Retailer 4
-
£4,442 GBP
View
B
Retailer 5
-
£4,446 GBP
View
B
Retailer 6
-
£4,705 GBP
View
Retailer 7
-
£4,777 GBP
View
Price last confirmed 30 days ago
B
Retailer 8
-
£4,976 GBP
View
B
Retailer 9
-
£5,020 GBP
View
B
Retailer 10
-
£5,056 GBP
View
B
Retailer 11
-
£5,110 GBP
View
B
Retailer 12
-
£5,110 GBP
View
Retailer 13
-
£5,117 GBP
View
Price last confirmed 16 days ago
B
Retailer 14
-
£5,275 GBP
View
B
Retailer 15
-
£5,394 GBP
View
B
Retailer 16
-
£5,729 GBP
View
Retailer 17
-
£5,811 GBP
View
Price last confirmed 23 days ago
B
Retailer 18
-
£6,433 GBP
View
Most Expensive
C
MOH London
A114A9F5E · Nov 4
£7,747 GBP
View
18 more retailers have this diamond
Prices start from £4,166 GBPSave up to £3,581 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
1.51ct Heart
£4,166 GBP