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Heart|Natural|GIA

1.51ct G SI1 Heart Natural Diamond

VG • G/SI1 • GIA 6542906470

Certificate GIA 6542906470

Diamond specifications and retailer prices

From $7,097 AUD
$4,974 USD
As of October 30, 2026
Save $7,619 AUD (52%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $16,546 AUD at NZ Jewellers · As of October 21, 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6542906470. Listed at 15 retailers as of October 30, 2026, with a 107% 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
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542906470
Dimensions6.72 × 7.94 × 4.73 mm
L/W Ratio1.18
Top View
6.72 mm7.94 mm1.51 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542906470
Side View
Table 61.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 59.6%

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: Oct 30
Current: $16,546 AUD|Low: $7,097 AUD|High: $16,546 AUD|Avg: $10,098 AUD
NZ Jewellers
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
Retailer 15
Retailer 16
Retailer 17
November 2, 2026
Retailer 4$7,097 AUD
Retailer 16$7,594 AUD
Retailer 9$7,749 AUD
Retailer 17$8,790 AUD
Retailer 13$8,962 AUD
Retailer 14$8,962 AUD
Retailer 15$8,962 AUD
Retailer 2$9,412 AUD
Retailer 7$10,074 AUD
Retailer 8$10,074 AUD
Retailer 5$10,221 AUD
Retailer 3$10,342 AUD
Retailer 6$10,402 AUD
Retailer 10$10,912 AUD
Retailer 12$12,273 AUD
Retailer 11$14,717 AUD
NZ Jewellers$16,546 AUD

36 data points across 17 retailers

15 retailers$7,097 AUD to $14,717 AUD

A
Cheapest Retailer
-
$7,097 AUD
$4,974 USD
B+
Retailer 2
-
$7,594 AUD
$5,322 USD
View
B+
Retailer 3
-
$8,790 AUD
$6,160 USD
View
Retailer 4
-
$8,962 AUD
$6,281 USD
View
Price last confirmed 11 days ago
Retailer 5
-
$8,962 AUD
$6,281 USD
View
Price last confirmed 10 days ago
B+
Retailer 6
-
$9,412 AUD
£5,194 GBP
View
B+
Retailer 7
-
$10,074 AUD
$7,060 USD
View
B+
Retailer 8
-
$10,074 AUD
$7,060 USD
View
B
Retailer 9
-
$10,221 AUD
$7,163 USD
View
Retailer 10
-
$10,342 AUD
$7,248 USD
View
Price last confirmed 10 days ago
B
Retailer 11
-
$10,402 AUD
$7,290 USD
View
B
Retailer 12
-
$10,912 AUD
€7,283 EUR
View
B
Retailer 13
-
$12,273 AUD
ZAR 138,957 ZAR
View
B
Retailer 14
-
$14,717 AUD
£8,121 GBP
View
Most Expensive
NZ Jewellers
91b28675-faf2-44ca-b624-bf80e65eaa5d · Oct 21
$16,546 AUD
$11,596 USD
View
Price last confirmed 12 days ago
14 more retailers have this diamond
Prices start from $7,097 AUDSave up to $7,619 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
$7,097 AUD