Heart|Natural|GIA

1.51ct D SI2 Heart Natural Diamond

ID • D/SI2 • GIA 3555112856

Certificate GIA 3555112856

Diamond specifications and retailer prices

From $7,672 AUD
$5,389 USD
As of October 31, 2026
Save $4,574 AUD (37%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $13,903 AUD at NZ Jewellers · As of September 29, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3555112856. Listed at 12 retailers as of October 31, 2026, with a 60% 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
D
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555112856
Dimensions7.71 × 7.01 × 4.75 mm
L/W Ratio1.10
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
7.71 mm7.01 mm1.51 ctD / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 3555112856
Side View
Table 57.0%CrownGirdlePavilionCulet: NoneDepth 61.6%

Caratlytics Score

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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: Oct 31
Current: $7,832 AUD|Low: $7,672 AUD|High: $12,394 AUD|Avg: $9,001 AUD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 6$7,672 AUD
Retailer 1$7,832 AUD
Retailer 3$8,041 AUD
Retailer 5$8,312 AUD
Retailer 4$9,084 AUD
Retailer 2$12,245 AUD

42 data points across 6 retailers

12 retailers$7,672 AUD to $12,245 AUD

A
Cheapest Retailer
-
$7,672 AUD
$5,389 USD
Final sale: no returns
A
Retailer 2
-
$7,832 AUD
£4,332 GBP
View
A
Retailer 3
-
$8,041 AUD
£4,448 GBP
View
Retailer 4
-
$8,312 AUD
$5,839 USD
View
Price last confirmed 25 days ago
Retailer 5
-
$8,312 AUD
$5,839 USD
View
Price last confirmed 24 days ago
Retailer 6
-
$8,312 AUD
$5,839 USD
View
Price last confirmed 31 days ago
Retailer 7
-
$8,312 AUD
$5,839 USD
View
Price last confirmed 7 days ago
B+
Retailer 8
-
$9,084 AUD
€6,077 EUR
View
Retailer 9
-
$9,591 AUD
$6,737 USD
View
Price last confirmed 69 days ago
Retailer 10
-
$9,591 AUD
$6,737 USD
View
Price last confirmed 33 days ago
B+
Retailer 11
-
$12,245 AUD
£6,773 GBP
View
Most Expensive
NZ Jewellers
73bad57c-9b5f-48e9-b54a-d0843ec0329b · Sep 29
$13,903 AUD
$9,766 USD
View
Price last confirmed 33 days ago
11 more retailers have this diamond
Prices start from $7,672 AUDSave up to $4,574 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
$7,672 AUD