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Heart|Natural|GIA

1.51ct J SI1 Heart Natural Diamond

VG • J/SI1 • GIA 7308781385

Certificate GIA 7308781385

Diamond specifications and retailer prices

From $4,806 AUD
As of November 6, 2026
Save $5,418 AUD (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $10,223 AUD at MOH London · As of November 2, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7308781385. Listed at 14 retailers as of November 2, 2026, with prices from $4,806 to $10,223, a $5,418 spread on the same certified stone. MOH London lists it at $10,223. 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
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7308781385
Dimensions6.96 × 5.94 × 4.22 mm
L/W Ratio1.17
Top View
6.96 mm5.94 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 7308781385
Side View
Table 57.0%CrownGirdle: ThickPavilionCulet: NoneDepth 71.1%

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: $10,223 AUD|Low: $4,750 AUD|High: $10,332 AUD|Avg: $6,595 AUD|-0.9%
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 7, 2026
Retailer 11$4,806 AUD
Retailer 5$5,647 AUD
Retailer 3$5,734 AUD
Retailer 13$5,923 AUD
Retailer 9$6,047 AUD
Retailer 4$6,084 AUD
Retailer 7$6,142 AUD
Retailer 12$6,418 AUD
Retailer 2$6,519 AUD
Retailer 6$6,635 AUD
Retailer 14$6,666 AUD
Retailer 8$7,225 AUD
Retailer 10$7,832 AUD
MOH London$10,223 AUD

30 data points across 14 retailers

14 retailers$4,806 AUD to $10,223 AUD

B+
Cheapest Retailer
-
$4,806 AUD
B+
Retailer 2
-
$5,647 AUD
View
B+
Retailer 3
-
$5,734 AUD
View
B
Retailer 4
-
$5,923 AUD
View
Final sale: no returns
B
Retailer 5
-
$6,047 AUD
View
B
Retailer 6
-
$6,084 AUD
View
B+
Retailer 7
-
$6,142 AUD
View
Retailer 8
-
$6,418 AUD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$6,519 AUD
View
B
Retailer 10
-
$6,635 AUD
View
B
Retailer 11
-
$6,666 AUD
View
B
Retailer 12
-
$7,225 AUD
View
B
Retailer 13
-
$7,832 AUD
View
Most Expensive
B
MOH London
30FE02979 · Nov 2
$10,223 AUD
£5,531 GBP
View
13 more retailers have this diamond
Prices start from $4,806 AUDSave up to $5,418 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.

B+
1.51ct Heart
$4,806 AUD