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Heart|Natural|GIA

1.51ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 7546607780

Certificate GIA 7546607780

Diamond specifications and retailer prices

From $5,796 AUD
$4,062 USD
As of November 1, 2026
Save $6,206 AUD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $13,798 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7546607780. Listed at 21 retailers as of November 1, 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. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7546607780
Dimensions6.80 × 7.95 × 4.72 mm
L/W Ratio1.17
Girdle conditionFaceted
Top View
6.80 mm7.95 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7546607780
Side View
Table 59.0%CrownGirdle: MED-THKPavilion 41.2°Culet: NoneDepth 59.3%

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 1
Current: $7,106 AUD|Low: $5,725 AUD|High: $12,935 AUD|Avg: $7,777 AUD|-2.2%
Retailer 1
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
Retailer 18
November 2, 2026
Retailer 17$5,796 AUD
Retailer 12$5,826 AUD
Retailer 16$6,144 AUD
Retailer 14$6,387 AUD
Retailer 7$6,500 AUD
Retailer 2$6,522 AUD
Retailer 8$6,564 AUD
Retailer 5$6,573 AUD
Retailer 4$6,932 AUD
Retailer 1$7,106 AUD
Retailer 11$7,324 AUD
Retailer 15$7,453 AUD
Retailer 9$7,857 AUD
Retailer 10$8,059 AUD
Retailer 3$9,451 AUD
Retailer 13$9,574 AUD
Retailer 18$12,002 AUD
Retailer 6$12,196 AUD

25 data points across 18 retailers

21 retailers$5,796 AUD to $12,002 AUD

A
Cheapest Retailer
-
$5,796 AUD
$4,062 USD
A
Retailer 2
-
$5,826 AUD
HK$31,900 HKD
View
A
Retailer 3
-
$6,144 AUD
$4,306 USD
View
B+
Retailer 4
-
$6,387 AUD
$4,476 USD
View
Final sale: no returns
A
Retailer 5
-
$6,500 AUD
$4,555 USD
View
A
Retailer 6
-
$6,522 AUD
€4,353 EUR
View
A
Retailer 7
-
$6,564 AUD
$4,600 USD
View
A
Retailer 8
-
$6,573 AUD
$4,607 USD
View
B+
Retailer 9
-
$6,932 AUD
$4,858 USD
View
B+
Retailer 10
-
$7,106 AUD
$4,980 USD
View
B+
Retailer 11
-
$7,324 AUD
$5,133 USD
View
Retailer 12
-
$7,373 AUD
$5,167 USD
View
Price last confirmed 12 days ago
B+
Retailer 13
-
$7,453 AUD
£4,113 GBP
View
B+
Retailer 14
-
$7,857 AUD
SGD 7,441 SGD
View
Retailer 15
-
$8,059 AUD
View
Price last confirmed 23 days ago
B
Retailer 16
-
$8,485 AUD
View
B+
Retailer 17
-
$9,451 AUD
ZAR 107,001 ZAR
View
B+
Retailer 18
-
$9,574 AUD
$6,710 USD
View
B
Retailer 19
-
$12,002 AUD
£6,623 GBP
View
Retailer 20
-
$12,196 AUD
$8,548 USD
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
dbf135a3-0579-43ef-9381-30a46e39cd96 · Sep 25
$13,798 AUD
$9,670 USD
View
Price last confirmed 38 days ago
20 more retailers have this diamond
Prices start from $5,796 AUDSave up to $6,206 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
$5,796 AUD