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Round|Natural|GIA

1.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2537064163

Certificate GIA 2537064163

Diamond specifications and retailer prices

From $7,750 AUD
As of November 1, 2026
Save $9,575 AUD (55%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $17,325 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2537064163. Listed at 27 retailers as of November 1, 2026, with prices from $7,750 to $17,325, a $9,575 spread on the same certified stone. NZ Jewellers lists it at $17,325. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2537064163
Dimensions7.33 × 7.39 × 4.50 mm
L/W Ratio1.01
Star length50%
Top View
7.33 mm7.39 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2537064163
Side View
Table 57.0%Crown 32°Girdle: Medium to Slightly ThickPavilion 41.4°Culet: NoneDepth 61.2%

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 1
Current: $17,325 AUD|Low: $7,750 AUD|High: $17,325 AUD|Avg: $10,024 AUD
NZ Jewellers
Retailer 2
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Retailer 27
November 6, 2026
Retailer 4$7,750 AUD
Retailer 7$7,850 AUD
Retailer 8$7,955 AUD
Retailer 14$8,185 AUD
Retailer 26$8,192 AUD
Retailer 9$8,293 AUD
Retailer 15$8,661 AUD
Retailer 3$8,718 AUD
Retailer 20$8,959 AUD
Retailer 17$9,172 AUD
Retailer 10$9,240 AUD
Retailer 5$9,384 AUD
Retailer 6$9,384 AUD
Retailer 11$9,384 AUD
Retailer 18$9,556 AUD
Retailer 25$9,558 AUD
Retailer 13$9,770 AUD
Retailer 27$10,054 AUD
Retailer 19$10,231 AUD
Retailer 2$10,595 AUD
Retailer 16$10,595 AUD
Retailer 12$10,828 AUD
Retailer 21$11,004 AUD
Retailer 22$12,639 AUD
Retailer 24$15,018 AUD
Retailer 23$15,219 AUD
NZ Jewellers$17,325 AUD

31 data points across 27 retailers

27 retailers$7,750 AUD to $17,325 AUD

A
Cheapest Retailer
-
$7,750 AUD
A
Retailer 2
-
$7,850 AUD
View
A
Retailer 3
-
$7,955 AUD
View
B+
Retailer 4
-
$8,185 AUD
View
B+
Retailer 5
-
$8,192 AUD
View
B+
Retailer 6
-
$8,293 AUD
View
B+
Retailer 7
-
$8,661 AUD
View
Final sale: no returns
B+
Retailer 8
-
$8,718 AUD
View
B+
Retailer 9
-
$8,959 AUD
View
B+
Retailer 10
-
$9,172 AUD
View
B+
Retailer 11
-
$9,240 AUD
View
Retailer 12
-
$9,384 AUD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
$9,384 AUD
View
B+
Retailer 14
-
$9,384 AUD
View
Retailer 15
-
$9,556 AUD
View
Price last confirmed 22 days ago
B+
Retailer 16
-
$9,558 AUD
View
B+
Retailer 17
-
$9,770 AUD
View
Retailer 18
-
$10,054 AUD
View
Price last confirmed 15 days ago
B
Retailer 19
-
$10,231 AUD
View
B+
Retailer 20
-
$10,595 AUD
View
B
Retailer 21
-
$10,595 AUD
View
B
Retailer 22
-
$10,828 AUD
View
B+
Retailer 23
-
$11,004 AUD
View
B
Retailer 24
-
$12,639 AUD
View
B
Retailer 25
-
$15,018 AUD
View
B
Retailer 26
-
$15,219 AUD
View
Most Expensive
B
NZ Jewellers
7b07b6b6-6dda-4fb1-b157-9c3c62e51643 · Nov 5
$17,325 AUD
$11,904 USD
View
26 more retailers have this diamond
Prices start from $7,750 AUDSave up to $9,575 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 Round
$7,750 AUD