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Heart|Natural|GIA

1.71ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 2557491968

Certificate GIA 2557491968

Diamond specifications and retailer prices

From $6,899 AUD
$4,835 USD
As of November 2, 2026
Save $5,007 AUD (42%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $12,502 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.71ct natural heart diamond

This 1.71ct natural heart sits in the one-and-a-half to two carat band, graded I 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 2557491968. Listed at 10 retailers as of November 1, 2026, with a 73% 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

1.71
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557491968
Dimensions8.03 × 7.07 × 4.88 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Needle
Top View
8.03 mm7.07 mm1.71 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557491968
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 60.9%

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: $8,458 AUD|Low: $6,324 AUD|High: $12,049 AUD|Avg: $8,456 AUD|+2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 5$6,899 AUD
Retailer 2$7,462 AUD
Retailer 4$7,476 AUD
Retailer 1$8,458 AUD
Retailer 6$8,895 AUD
Retailer 3$11,906 AUD

42 data points across 6 retailers

10 retailers$6,899 AUD to $11,906 AUD

A
Cheapest Retailer
-
$6,899 AUD
$4,835 USD
Final sale: no returns
B+
Retailer 2
-
$7,462 AUD
£4,118 GBP
View
B+
Retailer 3
-
$7,476 AUD
$5,239 USD
View
Retailer 4
-
$7,476 AUD
$5,239 USD
View
Price last confirmed 25 days ago
Retailer 5
-
$7,476 AUD
$5,239 USD
View
Price last confirmed 32 days ago
B+
Retailer 6
-
$8,458 AUD
€5,645 EUR
View
Retailer 7
-
$8,626 AUD
$6,045 USD
View
Price last confirmed 64 days ago
Retailer 8
-
$8,626 AUD
$6,045 USD
View
Price last confirmed 34 days ago
B
Retailer 9
-
$11,906 AUD
£6,570 GBP
View
Most Expensive
NZ Jewellers
8c20224e-c3bd-4021-ab2e-d9b7e6f1b9d5 · Sep 30
$12,502 AUD
$8,762 USD
View
Price last confirmed 33 days ago
9 more retailers have this diamond
Prices start from $6,899 AUDSave up to $5,007 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
1.71ct Heart
$6,899 AUD