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Heart|Natural|GIA

1.70ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 2537925451

Certificate GIA 2537925451

Diamond specifications and retailer prices

From $6,463 AUD
As of November 5, 2026
Save $6,033 AUD (48%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $14,334 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 2537925451. Listed at 19 retailers as of November 5, 2026, with a 93% 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 2537925451
Dimensions7.19 × 8.19 × 4.88 mm
L/W Ratio1.14
Top View
7.19 mm8.19 mm1.70 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2537925451
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.6%

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 5
Current: $9,054 AUD|Low: $6,445 AUD|High: $12,809 AUD|Avg: $8,538 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 9$6,463 AUD
Retailer 6$6,801 AUD
Retailer 2$7,405 AUD
Retailer 8$7,679 AUD
Retailer 11$7,871 AUD
Retailer 5$8,236 AUD
Retailer 3$8,628 AUD
Retailer 10$8,753 AUD
Retailer 1$9,054 AUD
Retailer 7$10,405 AUD
Retailer 4$12,496 AUD

40 data points across 11 retailers

19 retailers$6,463 AUD to $12,496 AUD

B+
Cheapest Retailer
-
$6,463 AUD
B+
Retailer 2
-
$6,801 AUD
View
Retailer 3
-
$7,405 AUD
View
Price last confirmed 11 days ago
B+
Retailer 4
-
$7,679 AUD
View
B
Retailer 5
-
$7,871 AUD
View
Final sale: no returns
B+
Retailer 6
-
$7,942 AUD
View
B+
Retailer 7
-
$7,946 AUD
View
B+
Retailer 8
-
$8,236 AUD
View
B
Retailer 9
-
$8,303 AUD
View
Retailer 10
-
$8,571 AUD
View
Price last confirmed 22 days ago
Retailer 11
-
$8,571 AUD
View
Price last confirmed 22 days ago
Retailer 12
-
$8,571 AUD
View
Price last confirmed 20 days ago
Retailer 13
-
$8,628 AUD
View
Price last confirmed 29 days ago
B
Retailer 14
-
$8,753 AUD
View
B
Retailer 15
-
$9,054 AUD
View
Retailer 16
-
$9,889 AUD
View
Price last confirmed 19 days ago
B
Retailer 17
-
$10,405 AUD
View
B
Retailer 18
-
$12,496 AUD
View
Most Expensive
NZ Jewellers
757a0c92-cc31-4100-b482-86a769ea811a · Oct 18
$14,334 AUD
$9,849 USD
View
Price last confirmed 20 days ago
18 more retailers have this diamond
Prices start from $6,463 AUDSave up to $6,033 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
$6,463 AUD