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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 $5,278 AUD
HK$28,900 HKD
As of November 2, 2026
Save $6,155 AUD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $11,433 AUD 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 $5,278 to $11,433, a $6,155 spread on the same certified stone. MOH London lists it at $11,433. 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 2
Current: $11,433 AUD|Low: $5,205 AUD|High: $12,230 AUD|Avg: $7,393 AUD|-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 2$5,278 AUD
Retailer 13$6,018 AUD
Retailer 12$6,034 AUD
Retailer 3$6,305 AUD
Retailer 10$6,344 AUD
Retailer 6$6,671 AUD
Retailer 8$6,721 AUD
Retailer 9$6,739 AUD
Retailer 5$6,799 AUD
Retailer 7$6,860 AUD
Retailer 11$7,648 AUD
Retailer 14$8,888 AUD
Retailer 4$11,094 AUD
MOH London$11,433 AUD

21 data points across 14 retailers

15 retailers$5,278 AUD to $11,433 AUD

A
Cheapest Retailer
-
$5,278 AUD
HK$28,900 HKD
A
Retailer 2
-
$6,018 AUD
€4,017 EUR
View
A
Retailer 3
-
$6,034 AUD
$4,229 USD
View
A
Retailer 4
-
$6,305 AUD
$4,419 USD
View
A
Retailer 5
-
$6,344 AUD
$4,446 USD
View
A
Retailer 6
-
$6,671 AUD
SGD 6,318 SGD
View
B+
Retailer 7
-
$6,721 AUD
$4,710 USD
View
Final sale: no returns
B+
Retailer 8
-
$6,739 AUD
£3,719 GBP
View
B+
Retailer 9
-
$6,799 AUD
$4,765 USD
View
B+
Retailer 10
-
$6,860 AUD
£3,786 GBP
View
B+
Retailer 11
-
$7,648 AUD
$5,360 USD
View
Retailer 12
-
$8,059 AUD
View
Price last confirmed 23 days ago
B+
Retailer 13
-
$8,888 AUD
ZAR 100,623 ZAR
View
B
Retailer 14
-
$11,094 AUD
$7,775 USD
View
Most Expensive
B
MOH London
53F8CD7FB · Nov 1
$11,433 AUD
£6,309 GBP
View
14 more retailers have this diamond
Prices start from $5,278 AUDSave up to $6,155 AUD

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
$5,278 AUD