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Heart|Natural|GIA

1.63ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6351567071

Certificate GIA 6351567071

Diamond specifications and retailer prices

From $4,733 AUD
As of November 6, 2026
Save $6,222 AUD (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $10,955 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.63ct natural heart diamond

This 1.63ct natural heart sits in the one-and-a-half to two carat band, graded G 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 6351567071. Listed at 13 retailers as of November 5, 2026, with prices from $4,733 to $10,955, a $6,222 spread on the same certified stone. NZ Jewellers lists it at $10,955. 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

1.63
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceVery Strong
OriginNatural
Grading LabGIA
CertificateGIA 6351567071
Dimensions8.31 × 7.13 × 4.84 mm
L/W Ratio1.17
Top View
8.31 mm7.13 mm1.63 ctG / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceVery Strong
CertificateGIA 6351567071
Side View
Table 61.0%CrownGirdle: MED-MEDPavilionCulet: NoneDepth 58.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,733 AUD|Low: $4,733 AUD|High: $10,134 AUD|Avg: $6,844 AUD|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$4,733 AUD
Retailer 4$5,532 AUD
Retailer 7$6,287 AUD
Retailer 3$6,369 AUD
Retailer 6$6,706 AUD
Retailer 2$7,075 AUD
Retailer 5$9,985 AUD

40 data points across 7 retailers

13 retailers$4,733 AUD to $10,955 AUD

A
Cheapest Retailer
-
$4,733 AUD
A
Retailer 2
-
$5,532 AUD
View
A
Retailer 3
-
$5,967 AUD
View
Retailer 4
-
$6,287 AUD
View
Price last confirmed 9 days ago
A
Retailer 5
-
$6,287 AUD
View
A
Retailer 6
-
$6,287 AUD
View
A
Retailer 7
-
$6,369 AUD
View
Retailer 8
-
$6,529 AUD
View
Price last confirmed 8 days ago
Retailer 9
-
$6,706 AUD
View
Price last confirmed 29 days ago
A
Retailer 10
-
$7,075 AUD
View
B+
Retailer 11
-
$7,255 AUD
View
B+
Retailer 12
-
$9,985 AUD
View
Most Expensive
B
NZ Jewellers
f6b7fb72-3c8f-4f14-bdc9-cf0d769c8b9b · Nov 5
$10,955 AUD
$7,527 USD
View
12 more retailers have this diamond
Prices start from $4,733 AUDSave up to $6,222 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
1.63ct Heart
$4,733 AUD