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Heart|Natural|GIA

1.51ct G SI2 Heart Natural Diamond

EX • G/SI2 • GIA 2554044527

Certificate GIA 2554044527

Diamond specifications and retailer prices

From $4,347 AUD
HK$23,800 HKD
As of November 2, 2026
Save $5,350 AUD (55%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $10,502 AUD at NZ Jewellers · As of September 25, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2554044527. Listed at 13 retailers as of November 2, 2026, with a 123% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2554044527
Dimensions6.99 × 7.94 × 4.59 mm
L/W Ratio1.14
Top View
6.99 mm7.94 mm1.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2554044527
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 57.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $5,213 AUD|Low: $4,292 AUD|High: $10,202 AUD|Avg: $6,188 AUD|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 7$4,347 AUD
Retailer 3$4,365 AUD
Retailer 11$4,595 AUD
Retailer 12$4,694 AUD
Retailer 9$4,847 AUD
Retailer 1$5,213 AUD
Retailer 6$5,322 AUD
Retailer 10$5,534 AUD
Retailer 4$6,435 AUD
Retailer 8$7,548 AUD
Retailer 2$9,092 AUD
Retailer 5$9,697 AUD

34 data points across 12 retailers

13 retailers$4,347 AUD to $9,697 AUD

A
Cheapest Retailer
-
$4,347 AUD
HK$23,800 HKD
A
Retailer 2
-
$4,365 AUD
$3,059 USD
View
A
Retailer 3
-
$4,595 AUD
$3,220 USD
View
A
Retailer 4
-
$4,694 AUD
$3,290 USD
View
A
Retailer 5
-
$4,847 AUD
$3,397 USD
View
Final sale: no returns
A
Retailer 6
-
$5,213 AUD
View
A
Retailer 7
-
$5,322 AUD
$3,730 USD
View
A
Retailer 8
-
$5,534 AUD
£3,054 GBP
View
A
Retailer 9
-
$6,435 AUD
View
B+
Retailer 10
-
$7,548 AUD
$5,290 USD
View
Retailer 11
-
$9,092 AUD
$6,372 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
$9,697 AUD
£5,351 GBP
View
Most Expensive
NZ Jewellers
dbcde0c6-ecd5-4e53-b75b-bbe4c5d8e081 · Sep 25
$10,502 AUD
$7,360 USD
View
Price last confirmed 38 days ago
12 more retailers have this diamond
Prices start from $4,347 AUDSave up to $5,350 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
$4,347 AUD