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Heart|Natural|GIA

1.51ct I SI2 Heart Natural Diamond

GD • I/SI2 • GIA 6482518694

Certificate GIA 6482518694

Diamond specifications and retailer prices

From $6,331 AUD
As of November 4, 2026
Save $6,397 AUD (50%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $12,728 AUD at MOH London · As of November 4, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6482518694. Listed at 14 retailers as of November 4, 2026, with prices from $6,331 to $12,728, a $6,397 spread on the same certified stone. MOH London lists it at $12,728. 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
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6482518694
Dimensions6.96 × 6.58 × 4.51 mm
L/W Ratio1.06
Top View
6.96 mm6.58 mm1.51 ctI / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6482518694
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.5%

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 4
Current: $12,728 AUD|Low: $6,404 AUD|High: $12,916 AUD|Avg: $8,434 AUD|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 4$6,404 AUD
Retailer 6$6,552 AUD
Retailer 7$6,699 AUD
Retailer 8$6,757 AUD
Retailer 5$7,260 AUD
Retailer 3$7,695 AUD
Retailer 9$8,843 AUD
Retailer 2$9,016 AUD
Retailer 10$9,534 AUD
MOH London$12,728 AUD

41 data points across 10 retailers

14 retailers$6,331 AUD to $12,728 AUD

B+
Cheapest Retailer
-
$6,331 AUD
B+
Retailer 2
-
$6,404 AUD
View
B+
Retailer 3
-
$6,552 AUD
View
B+
Retailer 4
-
$6,699 AUD
View
Final sale: no returns
B+
Retailer 5
-
$6,757 AUD
View
B+
Retailer 6
-
$7,193 AUD
View
Retailer 7
-
$7,260 AUD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$7,695 AUD
View
B
Retailer 9
-
$7,815 AUD
View
B
Retailer 10
-
$7,815 AUD
View
B
Retailer 11
-
$8,077 AUD
View
Retailer 12
-
$8,843 AUD
View
Price last confirmed 23 days ago
B
Retailer 13
-
$9,016 AUD
View
Most Expensive
B
MOH London
2B834B157 · Nov 4
$12,728 AUD
£6,886 GBP
View
13 more retailers have this diamond
Prices start from $6,331 AUDSave up to $6,397 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
$6,331 AUD