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Heart|Natural|GIA

1.51ct G SI1 Heart Natural Diamond

GD • G/SI1 • GIA 6362740390

Certificate GIA 6362740390

Diamond specifications and retailer prices

From £3,931 GBP
As of November 6, 2026
Save £4,376 GBP (53%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £8,306 GBP at MOH London · As of November 1, 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 G 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 6362740390. Listed at 18 retailers as of November 1, 2026, with prices from £3,931 to £8,306, a £4,376 spread on the same certified stone. MOH London lists it at £8,306. 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
G
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6362740390
Dimensions6.89 × 6.28 × 4.20 mm
L/W Ratio1.10
Top View
6.89 mm6.28 mm1.51 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6362740390
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 66.9%

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: £8,306 GBP|Low: £4,224 GBP|High: £8,406 GBP|Avg: £5,779 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 7£4,244 GBP
Retailer 10£4,647 GBP
Retailer 3£4,708 GBP
Retailer 11£4,984 GBP
Retailer 14£4,994 GBP
Retailer 12£5,025 GBP
Retailer 5£5,306 GBP
Retailer 13£5,501 GBP
Retailer 4£5,715 GBP
Retailer 9£5,747 GBP
Retailer 2£6,475 GBP
Retailer 6£6,566 GBP
Retailer 8£7,271 GBP
MOH London£8,306 GBP

44 data points across 14 retailers

18 retailers£3,931 GBP to £8,306 GBP

B+
Cheapest Retailer
-
£3,931 GBP
B+
Retailer 2
-
£4,244 GBP
View
B
Retailer 3
-
£4,647 GBP
View
B
Retailer 4
-
£4,647 GBP
View
Retailer 5
-
£4,647 GBP
View
Price last confirmed 10 days ago
B
Retailer 6
-
£4,708 GBP
View
B
Retailer 7
-
£4,796 GBP
View
Retailer 8
-
£4,984 GBP
View
Price last confirmed 9 days ago
B
Retailer 9
-
£4,994 GBP
View
B
Retailer 10
-
£5,025 GBP
View
B
Retailer 11
-
£5,306 GBP
View
B
Retailer 12
-
£5,501 GBP
View
Final sale: no returns
B
Retailer 13
-
£5,715 GBP
View
Retailer 14
-
£5,747 GBP
View
Price last confirmed 16 days ago
B
Retailer 15
-
£6,475 GBP
View
Retailer 16
-
£6,566 GBP
View
Price last confirmed 15 days ago
B
Retailer 17
-
£7,271 GBP
View
Most Expensive
B
MOH London
EA09349D7 · Nov 1
£8,306 GBP
View
17 more retailers have this diamond
Prices start from £3,931 GBPSave up to £4,376 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
£3,931 GBP