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Heart|Natural|GIA

1.70ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 7548576551

Certificate GIA 7548576551

Diamond specifications and retailer prices

From $6,241 AUD
As of November 6, 2026
Save $6,826 AUD (52%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $13,831 AUD at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.7ct natural heart diamond

This 1.7ct natural heart sits in the one-and-a-half to two carat band, graded J 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 7548576551. Listed at 20 retailers as of November 4, 2026, with a 109% 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

1.70
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7548576551
Dimensions7.11 × 8.08 × 4.98 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Feather, Crystal, Needle
Top View
7.11 mm8.08 mm1.70 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7548576551
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $13,831 AUD|Low: $6,203 AUD|High: $13,831 AUD|Avg: $8,840 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
November 7, 2026
Retailer 14$6,241 AUD
Retailer 8$6,567 AUD
Retailer 11$7,409 AUD
Retailer 3$7,591 AUD
Retailer 9$7,872 AUD
Retailer 2$7,946 AUD
Retailer 13$8,194 AUD
Retailer 5$8,270 AUD
Retailer 7$8,270 AUD
Retailer 4$8,313 AUD
Retailer 15$8,450 AUD
Retailer 6$9,542 AUD
Retailer 10$10,036 AUD
Retailer 12$13,067 AUD
NZ Jewellers$13,831 AUD

28 data points across 15 retailers

20 retailers$6,241 AUD to $13,067 AUD

B+
Cheapest Retailer
-
$6,241 AUD
B+
Retailer 2
-
$6,567 AUD
View
B+
Retailer 3
-
$7,409 AUD
View
B+
Retailer 4
-
$7,591 AUD
View
Final sale: no returns
B
Retailer 5
-
$7,661 AUD
View
B
Retailer 6
-
$7,663 AUD
View
B+
Retailer 7
-
$7,872 AUD
View
B+
Retailer 8
-
$7,946 AUD
View
Retailer 9
-
$7,968 AUD
View
Price last confirmed 23 days ago
B+
Retailer 10
-
$8,029 AUD
View
B+
Retailer 11
-
$8,194 AUD
View
Retailer 12
-
$8,270 AUD
View
Price last confirmed 22 days ago
Retailer 13
-
$8,270 AUD
View
Price last confirmed 20 days ago
Retailer 14
-
$8,270 AUD
View
Price last confirmed 22 days ago
Retailer 15
-
$8,313 AUD
View
Price last confirmed 20 days ago
B
Retailer 16
-
$8,450 AUD
View
Retailer 17
-
$9,542 AUD
View
Price last confirmed 19 days ago
B
Retailer 18
-
$10,036 AUD
View
B
Retailer 19
-
$13,067 AUD
View
Most Expensive
NZ Jewellers
2342f5bb-d5f6-4248-bb12-cf09a4a2d8d1 · Oct 18
$13,831 AUD
$9,503 USD
View
Price last confirmed 20 days ago
19 more retailers have this diamond
Prices start from $6,241 AUDSave up to $6,826 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.

B+
1.70ct Heart
$6,241 AUD