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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 $7,252 NZD
£3,213 GBP
As of November 2, 2026
Save $6,157 NZD (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $13,410 NZD at NZ Jewellers · As of October 30, 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 October 30, 2026, with prices from $7,252 to $13,410, a $6,157 spread on the same certified stone. NZ Jewellers lists it at $13,410. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $13,410 NZD|Low: $7,155 NZD|High: $13,824 NZD|Avg: $9,047 NZD|-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$7,155 NZD
Retailer 2$7,252 NZD
Retailer 6$7,305 NZD
Retailer 4$7,697 NZD
Retailer 5$7,697 NZD
Retailer 7$7,946 NZD
Retailer 8$8,464 NZD
Retailer 10$8,660 NZD
Retailer 3$12,259 NZD
NZ Jewellers$13,410 NZD

34 data points across 10 retailers

8 retailers$7,252 NZD to $13,410 NZD

A
Cheapest Retailer
-
$7,252 NZD
£3,213 GBP
A
Retailer 2
-
$7,305 NZD
$4,110 USD
View
A
Retailer 3
-
$7,697 NZD
$4,331 USD
View
A
Retailer 4
-
$7,697 NZD
$4,331 USD
View
A
Retailer 5
-
$7,946 NZD
$4,471 USD
View
Retailer 6
-
$8,464 NZD
A$7,326 AUD
View
Price last confirmed 24 days ago
B+
Retailer 7
-
$12,259 NZD
£5,431 GBP
View
Most Expensive
B+
NZ Jewellers
a507d41b-ac5a-4fee-a244-4b369db3e023 · Oct 30
$13,410 NZD
$7,545 USD
View
7 more retailers have this diamond
Prices start from $7,252 NZDSave up to $6,157 NZD

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
$7,252 NZD