Heart|Natural|GIA

1.51ct D IF Heart Natural Diamond

VG • D/IF • GIA 15787730

Certificate GIA 15787730

Diamond specifications and retailer prices

From $19,619 AUD
As of November 4, 2026
Save $5,553 AUD (22%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $36,480 AUD at MOH London · As of October 8, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 15787730. Listed at 12 retailers as of November 3, 2026, with a 28% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Colour
IF
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishGood
SymmetryGood
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 15787730
Dimensions7.83 × 7.63 × 3.91 mm
L/W Ratio1.03
Top View
7.83 mm7.63 mm1.51 ctD / IF
OriginNatural
CutVery Good
PolishGood
SymmetryGood
FluorescenceMedium
CertificateGIA 15787730
Side View
Table 66.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 51.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $36,480 AUD|Low: $19,289 AUD|High: $36,576 AUD|Avg: $25,086 AUD|+4.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 3$19,619 AUD
Retailer 4$20,995 AUD
Retailer 6$21,212 AUD
Retailer 10$21,275 AUD
Retailer 9$22,663 AUD
Retailer 7$24,516 AUD
Retailer 2$25,172 AUD
Retailer 5$27,834 AUD
Retailer 8$33,365 AUD
MOH London$36,480 AUD

42 data points across 10 retailers

12 retailers$19,619 AUD to $25,172 AUD

B+
Cheapest Retailer
-
$19,619 AUD
B+
Retailer 2
-
$20,626 AUD
View
B+
Retailer 3
-
$20,995 AUD
View
Retailer 4
-
$23,140 AUD
View
Price last confirmed 28 days ago
Retailer 5
-
$24,516 AUD
View
Price last confirmed 32 days ago
Retailer 6
-
$24,683 AUD
View
Price last confirmed 35 days ago
Retailer 7
-
$25,069 AUD
View
Price last confirmed 28 days ago
B+
Retailer 8
-
$25,172 AUD
View
Retailer 9
-
$26,033 AUD
View
Price last confirmed 37 days ago
Retailer 10
-
$32,783 AUD
View
Price last confirmed 36 days ago
Retailer 11
-
$33,365 AUD
View
Price last confirmed 36 days ago
Most Expensive
MOH London
6EA7D6375 · Oct 8
$36,480 AUD
£20,108 GBP
View
Price last confirmed 28 days ago
11 more retailers have this diamond
Prices start from $19,619 AUDSave up to $5,553 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
$19,619 AUD