Heart|Natural|GIA

1.51ct H SI1 Heart Natural Diamond

ID • H/SI1 • GIA 6561498732

Certificate GIA 6561498732

Diamond specifications and retailer prices

From $3,648 USD
HK$28,500 HKD
As of November 1, 2026
Save $4,364 USD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,012 USD 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 $3,648 to $8,012, a $4,364 spread on the same certified stone. MOH London lists it at $8,012. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $8,012 USD|Low: $3,648 USD|High: $8,571 USD|Avg: $5,180 USD|-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$3,648 USD
Retailer 13$4,218 USD
Retailer 11$4,229 USD
Retailer 3$4,419 USD
Retailer 9$4,446 USD
Retailer 6$4,675 USD
Retailer 7$4,710 USD
Retailer 8$4,723 USD
Retailer 5$4,765 USD
Retailer 2$4,808 USD
Retailer 10$5,360 USD
Retailer 14$6,229 USD
Retailer 4$7,775 USD
MOH London$8,012 USD

21 data points across 14 retailers

15 retailers$3,648 USD to $8,012 USD

A
Cheapest Retailer
-
$3,648 USD
HK$28,500 HKD
A
Retailer 2
-
$4,218 USD
€4,017 EUR
View
A
Retailer 3
-
$4,229 USD
View
A
Retailer 4
-
$4,419 USD
View
A
Retailer 5
-
$4,446 USD
View
A
Retailer 6
-
$4,675 USD
SGD 6,318 SGD
View
B+
Retailer 7
-
$4,710 USD
View
Final sale: no returns
B+
Retailer 8
-
$4,723 USD
£3,719 GBP
View
B+
Retailer 9
-
$4,765 USD
View
B+
Retailer 10
-
$4,808 USD
£3,786 GBP
View
B+
Retailer 11
-
$5,360 USD
View
Retailer 12
-
$5,648 USD
A$8,689 AUD
View
Price last confirmed 23 days ago
B+
Retailer 13
-
$6,229 USD
ZAR 100,623 ZAR
View
B
Retailer 14
-
$7,775 USD
View
Most Expensive
B
MOH London
53F8CD7FB · Nov 1
$8,012 USD
£6,309 GBP
View
14 more retailers have this diamond
Prices start from $3,648 USDSave up to $4,364 USD

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
$3,648 USD