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Heart|Natural|GIA

1.70ct J SI1 Heart Natural Diamond

VG • J/SI1 • GIA 6435511839

Certificate GIA 6435511839

Diamond specifications and retailer prices

From $4,895 AUD
As of November 6, 2026
Save $5,436 AUD (53%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $10,330 AUD at MOH London · As of November 4, 2026
View at MOH London

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6435511839. Listed at 6 retailers as of November 4, 2026, with prices from $4,895 to $10,330, a $5,436 spread on the same certified stone. MOH London lists it at $10,330. 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
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle42.16°
Pavilion angle39.78°
OriginNatural
Grading LabGIA
CertificateGIA 6435511839
Dimensions6.82 × 8.11 × 5.00 mm
L/W Ratio1.19
Top View
6.82 mm8.11 mm1.70 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6435511839
Side View
Table 62.0%Crown 42.16°Girdle: THN-VTKPavilion 39.78°Culet: NoneDepth 61.6%

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 6
Current: $10,330 AUD|Low: $4,798 AUD|High: $11,061 AUD|Avg: $6,950 AUD|-6.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 3$4,895 AUD
Retailer 4$5,391 AUD
Retailer 5$5,634 AUD
Retailer 2$6,587 AUD
Retailer 6$6,918 AUD
MOH London$10,330 AUD

44 data points across 6 retailers

6 retailers$4,895 AUD to $10,330 AUD

A
Cheapest Retailer
-
$4,895 AUD
A
Retailer 2
-
$5,391 AUD
View
B+
Retailer 3
-
$5,634 AUD
View
B+
Retailer 4
-
$6,587 AUD
View
Retailer 5
-
$6,918 AUD
View
Price last confirmed 29 days ago
Most Expensive
B
MOH London
F3F72E178 · Nov 4
$10,330 AUD
£5,589 GBP
View
5 more retailers have this diamond
Prices start from $4,895 AUDSave up to $5,436 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
$4,895 AUD