Heart|Natural|GIA

1.51ct G IF Heart Natural Diamond

VG • G/IF • GIA 1558423853

Certificate GIA 1558423853

Diamond specifications and retailer prices

From $14,739 AUD
As of November 5, 2026
Save $6,443 AUD (30%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $22,666 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded G colour (near-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 1558423853. Listed at 15 retailers as of November 4, 2026, with a 44% 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
G
Colour
IF
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558423853
Dimensions7.73 × 6.54 × 4.72 mm
L/W Ratio1.18
Culet sizeNone
Top View
7.73 mm6.54 mm1.51 ctG / IF
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558423853
Side View
Table 68.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 61.1%

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 5
Current: $19,840 AUD|Low: $13,262 AUD|High: $21,493 AUD|Avg: $16,483 AUD|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6$13,298 AUD
Retailer 3$14,739 AUD
Retailer 7$14,961 AUD
Retailer 9$15,009 AUD
Retailer 10$15,011 AUD
Retailer 8$16,221 AUD
Retailer 2$16,283 AUD
Retailer 5$17,062 AUD
Retailer 1$19,840 AUD
Retailer 4$21,182 AUD

38 data points across 10 retailers

15 retailers$14,739 AUD to $21,182 AUD

Retailer 1
-
$13,298 AUD
Price last confirmed 12 days ago
A
Retailer 2
-
$14,739 AUD
View
Retailer 3
-
$14,961 AUD
View
Price last confirmed 14 days ago
A
Retailer 4
-
$15,009 AUD
View
Final sale: no returns
A
Retailer 5
-
$15,264 AUD
View
B+
Retailer 6
-
$16,221 AUD
View
Retailer 7
-
$16,262 AUD
View
Price last confirmed 36 days ago
B+
Retailer 8
-
$16,283 AUD
View
Retailer 9
-
$16,512 AUD
View
Price last confirmed 36 days ago
B+
Retailer 10
-
$17,062 AUD
View
Retailer 11
-
$18,763 AUD
View
Price last confirmed 38 days ago
Retailer 12
-
$18,763 AUD
View
Price last confirmed 61 days ago
B+
Retailer 13
-
$19,840 AUD
View
B
Retailer 14
-
$21,182 AUD
View
Most Expensive
NZ Jewellers
a41ef6fb-5656-4d9d-96d0-89749829f990 · Sep 30
$22,666 AUD
$15,867 USD
View
Price last confirmed 36 days ago
14 more retailers have this diamond
Prices start from $14,739 AUDSave up to $6,443 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
$14,739 AUD