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Heart|Natural|GIA

1.54ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 5231681789

Certificate GIA 5231681789

Diamond specifications and retailer prices

From $5,938 AUD
As of November 2, 2026
Save $5,043 AUD (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $10,981 AUD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.54ct natural heart diamond

This 1.54ct 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 5231681789. Listed at 8 retailers as of November 2, 2026, with prices from $5,938 to $10,981, a $5,043 spread on the same certified stone. NZ Jewellers lists it at $10,981. 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

1.54
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.71°
Pavilion angle42.28°
OriginNatural
Grading LabGIA
CertificateGIA 5231681789
Dimensions7.15 × 7.96 × 4.82 mm
L/W Ratio1.11
Top View
7.15 mm7.96 mm1.54 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5231681789
Side View
Table 61.0%Crown 36.71°Girdle: STK-THKPavilion 42.28°Culet: NoneDepth 60.6%

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 2
Current: $10,981 AUD|Low: $5,859 AUD|High: $11,320 AUD|Avg: $7,395 AUD|-3.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 9$5,859 AUD
Retailer 2$5,938 AUD
Retailer 6$5,982 AUD
Retailer 4$6,303 AUD
Retailer 5$6,303 AUD
Retailer 7$6,507 AUD
Retailer 8$6,931 AUD
Retailer 10$7,091 AUD
Retailer 3$10,038 AUD
NZ Jewellers$10,981 AUD

33 data points across 10 retailers

8 retailers$5,938 AUD to $10,981 AUD

A
Cheapest Retailer
-
$5,938 AUD
A
Retailer 2
-
$5,982 AUD
View
A
Retailer 3
-
$6,303 AUD
View
A
Retailer 4
-
$6,303 AUD
View
A
Retailer 5
-
$6,507 AUD
View
Retailer 6
-
$6,931 AUD
View
Price last confirmed 29 days ago
B+
Retailer 7
-
$10,038 AUD
View
Most Expensive
B+
NZ Jewellers
a507d41b-ac5a-4fee-a244-4b369db3e023 · Nov 3
$10,981 AUD
$7,545 USD
View
7 more retailers have this diamond
Prices start from $5,938 AUDSave up to $5,043 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
1.54ct Heart
$5,938 AUD