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Heart|Natural|GIA

1.70ct H SI1 Heart Natural Diamond

VG • H/SI1 • GIA 1557139856

Certificate GIA 1557139856

Diamond specifications and retailer prices

From $6,393 AUD
HK$35,000 HKD
As of November 2, 2026
Save $5,760 AUD (47%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $15,141 AUD at NZ Jewellers · As of September 25, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1557139856. Listed at 17 retailers as of November 1, 2026, with a 90% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.70
Carat
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1557139856
Dimensions6.96 × 8.00 × 5.11 mm
L/W Ratio1.15
Girdle conditionFaceted
Top View
6.96 mm8.00 mm1.70 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1557139856
Side View
Table 56.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.8%

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: $7,147 AUD|Low: $6,301 AUD|High: $13,979 AUD|Avg: $8,511 AUD|+1.4%
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
November 2, 2026
Retailer 9$6,393 AUD
Retailer 13$6,735 AUD
Retailer 3$6,871 AUD
Retailer 11$6,995 AUD
Retailer 15$7,000 AUD
Retailer 1$7,147 AUD
Retailer 5$7,218 AUD
Retailer 4$7,310 AUD
Retailer 8$7,705 AUD
Retailer 12$8,159 AUD
Retailer 7$8,769 AUD
Retailer 10$10,088 AUD
Retailer 2$10,134 AUD
Retailer 14$12,152 AUD
Retailer 6$13,400 AUD

26 data points across 15 retailers

17 retailers$6,393 AUD to $12,152 AUD

A
Cheapest Retailer
-
$6,393 AUD
HK$35,000 HKD
A
Retailer 2
-
$6,735 AUD
$4,720 USD
View
A
Retailer 3
-
$6,871 AUD
$4,815 USD
View
B+
Retailer 4
-
$6,995 AUD
$4,902 USD
View
Final sale: no returns
B+
Retailer 5
-
$7,000 AUD
€4,672 EUR
View
B+
Retailer 6
-
$7,147 AUD
$5,009 USD
View
B+
Retailer 7
-
$7,218 AUD
$5,058 USD
View
B+
Retailer 8
-
$7,310 AUD
$5,123 USD
View
B+
Retailer 9
-
$7,705 AUD
$5,400 USD
View
B+
Retailer 10
-
$8,159 AUD
£4,503 GBP
View
Retailer 11
-
$8,769 AUD
View
Price last confirmed 29 days ago
B
Retailer 12
-
$9,310 AUD
View
B+
Retailer 13
-
$10,088 AUD
$7,070 USD
View
B+
Retailer 14
-
$10,134 AUD
ZAR 114,740 ZAR
View
B
Retailer 15
-
$12,152 AUD
£6,706 GBP
View
Retailer 16
-
$13,400 AUD
$9,391 USD
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
ae520143-2145-4f76-b950-2c229f44c133 · Sep 25
$15,141 AUD
$10,611 USD
View
Price last confirmed 38 days ago
16 more retailers have this diamond
Prices start from $6,393 AUDSave up to $5,760 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
1.70ct Heart
$6,393 AUD