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Heart|Natural|GIA

1.50ct D SI1 Heart Natural Diamond

ID • D/SI1 • GIA 6435991168

Certificate GIA 6435991168

Diamond specifications and retailer prices

From $6,904 AUD
$4,850 USD
As of November 1, 2026
Save $8,291 AUD (55%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $15,196 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.5ct natural heart diamond

This 1.5ct natural heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6435991168. Listed at 12 retailers as of October 30, 2026, with prices from $6,904 to $15,196, a $8,291 spread on the same certified stone. NZ Jewellers lists it at $15,196. 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

1.50
Carat
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6435991168
Dimensions7.82 × 6.60 × 4.72 mm
L/W Ratio1.18
Top View
7.82 mm6.60 mm1.50 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6435991168
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 60.3%

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 1
Current: $15,196 AUD|Low: $6,271 AUD|High: $15,196 AUD|Avg: $9,043 AUD|+1.0%
NZ Jewellers
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 1, 2026
Retailer 7$6,513 AUD
Retailer 15$6,904 AUD
Retailer 3$7,098 AUD
Retailer 14$7,525 AUD
Retailer 5$8,115 AUD
Retailer 10$8,231 AUD
Retailer 11$8,231 AUD
Retailer 12$8,231 AUD
Retailer 2$8,501 AUD
Retailer 4$8,599 AUD
Retailer 13$9,497 AUD
Retailer 6$9,534 AUD
Retailer 9$11,163 AUD
Retailer 8$13,386 AUD
NZ Jewellers$15,196 AUD

44 data points across 15 retailers

12 retailers$6,904 AUD to $15,196 AUD

A
Cheapest Retailer
-
$6,904 AUD
$4,850 USD
A
Retailer 2
-
$7,098 AUD
$4,986 USD
View
A
Retailer 3
-
$7,525 AUD
$5,286 USD
View
Final sale: no returns
A
Retailer 4
-
$8,115 AUD
$5,700 USD
View
A
Retailer 5
-
$8,231 AUD
$5,782 USD
View
A
Retailer 6
-
$8,231 AUD
$5,782 USD
View
A
Retailer 7
-
$8,501 AUD
£4,702 GBP
View
B+
Retailer 8
-
$8,599 AUD
$6,040 USD
View
B+
Retailer 9
-
$9,497 AUD
$6,671 USD
View
B+
Retailer 10
-
$11,163 AUD
ZAR 126,676 ZAR
View
B
Retailer 11
-
$13,386 AUD
£7,404 GBP
View
Most Expensive
B
NZ Jewellers
af9601fe-5ca9-4705-a211-6f3a86158ee6 · Oct 30
$15,196 AUD
$10,674 USD
View
11 more retailers have this diamond
Prices start from $6,904 AUDSave up to $8,291 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
1.50ct Heart
$6,904 AUD