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Heart|Natural|GIA

1.51ct H SI1 Heart Natural Diamond

ID • H/SI1 • GIA 6561498732

Certificate GIA 6561498732

Diamond specifications and retailer prices

From £2,723 GBP
HK$28,500 HKD
As of November 1, 2026
Save £3,257 GBP (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £5,980 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6561498732. Listed at 15 retailers as of November 1, 2026, with prices from £2,723 to £5,980, a £3,257 spread on the same certified stone. MOH London lists it at £5,980. 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

1.51
Carat
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6561498732
Dimensions6.86 × 7.75 × 4.64 mm
L/W Ratio1.13
Girdle conditionFaceted
Top View
6.86 mm7.75 mm1.51 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6561498732
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £5,980 GBP|Low: £2,723 GBP|High: £6,397 GBP|Avg: £3,866 GBP|-6.5%
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 2, 2026
Retailer 12£2,723 GBP
Retailer 13£3,148 GBP
Retailer 11£3,156 GBP
Retailer 3£3,298 GBP
Retailer 9£3,318 GBP
Retailer 6£3,489 GBP
Retailer 7£3,515 GBP
Retailer 8£3,525 GBP
Retailer 5£3,556 GBP
Retailer 2£3,588 GBP
Retailer 10£4,000 GBP
Retailer 14£4,649 GBP
Retailer 4£5,803 GBP
MOH London£5,980 GBP

21 data points across 14 retailers

15 retailers£2,723 GBP to £5,980 GBP

A
Cheapest Retailer
-
£2,723 GBP
HK$28,500 HKD
A
Retailer 2
-
£3,148 GBP
€4,017 EUR
View
A
Retailer 3
-
£3,156 GBP
$4,229 USD
View
A
Retailer 4
-
£3,298 GBP
$4,419 USD
View
A
Retailer 5
-
£3,318 GBP
$4,446 USD
View
A
Retailer 6
-
£3,489 GBP
SGD 6,318 SGD
View
B+
Retailer 7
-
£3,515 GBP
$4,710 USD
View
Final sale: no returns
B+
Retailer 8
-
£3,525 GBP
View
B+
Retailer 9
-
£3,556 GBP
$4,765 USD
View
B+
Retailer 10
-
£3,588 GBP
View
B+
Retailer 11
-
£4,000 GBP
$5,360 USD
View
Retailer 12
-
£4,215 GBP
A$8,689 AUD
View
Price last confirmed 23 days ago
B+
Retailer 13
-
£4,649 GBP
ZAR 100,623 ZAR
View
B
Retailer 14
-
£5,803 GBP
$7,775 USD
View
Most Expensive
B
MOH London
53F8CD7FB · Nov 1
£5,980 GBP
View
14 more retailers have this diamond
Prices start from £2,723 GBPSave up to £3,257 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.

A
1.51ct Heart
£2,723 GBP