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Heart|Natural|GIA

1.50ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 5553306007

Certificate GIA 5553306007

Diamond specifications and retailer prices

From $5,718 AUD
As of November 6, 2026
Save $6,402 AUD (53%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $13,179 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.5ct natural heart diamond

This 1.5ct natural heart sits in the one-and-a-half to two carat band, graded H 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 5553306007. Listed at 22 retailers as of November 4, 2026, with a 112% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553306007
Dimensions7.41 × 8.05 × 4.41 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
7.41 mm8.05 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553306007
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 54.8%

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: $13,179 AUD|Low: $5,699 AUD|High: $13,225 AUD|Avg: $8,168 AUD|+2.1%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 13$5,718 AUD
Retailer 2$6,063 AUD
Retailer 10$6,642 AUD
Retailer 9$6,817 AUD
Retailer 4$7,044 AUD
Retailer 5$7,321 AUD
Retailer 7$7,497 AUD
Retailer 12$7,670 AUD
Retailer 3$7,852 AUD
Retailer 6$8,585 AUD
Retailer 8$9,310 AUD
Retailer 11$12,121 AUD
Queensmith$13,179 AUD

28 data points across 13 retailers

22 retailers$5,718 AUD to $12,121 AUD

A
Cheapest Retailer
-
$5,718 AUD
A
Retailer 2
-
$6,063 AUD
View
B+
Retailer 3
-
$6,642 AUD
View
B+
Retailer 4
-
$6,817 AUD
View
B+
Retailer 5
-
$7,044 AUD
View
Final sale: no returns
B+
Retailer 6
-
$7,050 AUD
View
B+
Retailer 7
-
$7,051 AUD
View
Retailer 8
-
$7,321 AUD
View
Price last confirmed 12 days ago
B+
Retailer 9
-
$7,414 AUD
View
B+
Retailer 10
-
$7,497 AUD
View
B+
Retailer 11
-
$7,670 AUD
View
Retailer 12
-
$7,680 AUD
View
Price last confirmed 22 days ago
Retailer 13
-
$7,680 AUD
View
Price last confirmed 20 days ago
Retailer 14
-
$7,680 AUD
View
Price last confirmed 22 days ago
Retailer 15
-
$7,794 AUD
View
Price last confirmed 29 days ago
B+
Retailer 16
-
$7,852 AUD
View
B+
Retailer 17
-
$8,585 AUD
View
Retailer 18
-
$8,862 AUD
View
Price last confirmed 19 days ago
B+
Retailer 19
-
$9,310 AUD
View
B
Retailer 20
-
$12,121 AUD
View
Retailer 21
-
$12,845 AUD
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
5553306007 · Oct 28
$13,179 AUD
£7,130 GBP
View
Price last confirmed 9 days ago
21 more retailers have this diamond
Prices start from $5,718 AUDSave up to $6,402 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
$5,718 AUD