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Round|Natural|GIA

1.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2554462236

Certificate GIA 2554462236

Diamond specifications and retailer prices

From $7,008 AUD
As of November 1, 2026
Save $8,562 AUD (55%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $15,570 AUD at NZ Jewellers · As of November 2, 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 2554462236. Listed at 27 retailers as of November 1, 2026, with prices from $7,008 to $15,570, a $8,562 spread on the same certified stone. NZ Jewellers lists it at $15,570. 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 angle36°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2554462236
Dimensions7.28 × 7.25 × 4.56 mm
L/W Ratio1.00
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural
Top View
7.28 mm7.25 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554462236
Side View
Table 57.0%Crown 36°Girdle: Slightly ThickPavilion 41.2°Culet: NoneDepth 62.8%

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 1
Current: $15,570 AUD|Low: $7,008 AUD|High: $15,570 AUD|Avg: $9,117 AUD|+3.9%
NZ Jewellers
Retailer 2
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Retailer 27
November 5, 2026
Retailer 3$7,008 AUD
Retailer 6$7,105 AUD
Retailer 7$7,150 AUD
Retailer 12$7,354 AUD
Retailer 26$7,359 AUD
Retailer 8$7,450 AUD
Retailer 14$7,783 AUD
Retailer 27$7,874 AUD
Retailer 18$8,143 AUD
Retailer 15$8,270 AUD
Retailer 9$8,325 AUD
Retailer 4$8,434 AUD
Retailer 5$8,434 AUD
Retailer 10$8,434 AUD
Retailer 16$8,533 AUD
Retailer 25$8,585 AUD
Retailer 21$8,871 AUD
Retailer 19$8,911 AUD
Retailer 17$9,224 AUD
Retailer 20$9,271 AUD
Retailer 22$9,574 AUD
Retailer 11$9,731 AUD
Retailer 2$9,921 AUD
Retailer 24$11,438 AUD
Retailer 13$13,490 AUD
Retailer 23$13,714 AUD
NZ Jewellers$15,570 AUD

31 data points across 27 retailers

27 retailers$7,008 AUD to $15,570 AUD

A
Cheapest Retailer
-
$7,008 AUD
A
Retailer 2
-
$7,105 AUD
View
A
Retailer 3
-
$7,150 AUD
View
A
Retailer 4
-
$7,354 AUD
View
A
Retailer 5
-
$7,359 AUD
View
A
Retailer 6
-
$7,450 AUD
View
A
Retailer 7
-
$7,652 AUD
View
A
Retailer 8
-
$7,874 AUD
View
B+
Retailer 9
-
$8,143 AUD
View
B+
Retailer 10
-
$8,270 AUD
View
B+
Retailer 11
-
$8,325 AUD
View
B+
Retailer 12
-
$8,434 AUD
View
B+
Retailer 13
-
$8,434 AUD
View
Retailer 14
-
$8,434 AUD
View
Price last confirmed 8 days ago
Retailer 15
-
$8,533 AUD
View
Price last confirmed 22 days ago
B+
Retailer 16
-
$8,585 AUD
View
B+
Retailer 17
-
$8,871 AUD
View
Retailer 18
-
$8,911 AUD
View
Price last confirmed 34 days ago
B+
Retailer 19
-
$9,224 AUD
View
Retailer 20
-
$9,271 AUD
View
Price last confirmed 31 days ago
B+
Retailer 21
-
$9,574 AUD
View
B+
Retailer 22
-
$9,731 AUD
View
B+
Retailer 23
-
$9,921 AUD
View
B+
Retailer 24
-
$11,438 AUD
View
B
Retailer 25
-
$13,490 AUD
View
B
Retailer 26
-
$13,714 AUD
View
Most Expensive
B
NZ Jewellers
567a0f31-d2f5-4f2a-9708-cf85a34a9260 · Nov 2
$15,570 AUD
$10,698 USD
View
26 more retailers have this diamond
Prices start from $7,008 AUDSave up to $8,562 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
$7,008 AUD