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Round|Natural|GIA

1.50ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 1226746537

Certificate GIA 1226746537

Diamond specifications and retailer prices

From $8,875 AUD
$6,234 USD
As of October 31, 2026
Save $11,113 AUD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $19,987 AUD at NZ Jewellers · As of October 30, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1226746537. Listed at 19 retailers as of October 30, 2026, with prices from $8,875 to $19,987, a $11,113 spread on the same certified stone. NZ Jewellers lists it at $19,987. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1226746537
Dimensions7.35 × 7.31 × 4.52 mm
L/W Ratio1.01
Star length55%
Lower girdle75%
Girdle conditionFaceted
Culet sizeNone
Cert comments
Additional clouds, pinpoints and surface graining are not shown.
Key to symbols
Cloud, Feather, Crystal, Needle, Indented Natural
Top View
7.35 mm7.31 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1226746537
Side View
Table 60.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $19,987 AUD|Low: $8,683 AUD|High: $19,987 AUD|Avg: $12,138 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 9$8,875 AUD
Retailer 6$8,969 AUD
Retailer 3$9,994 AUD
Retailer 7$9,994 AUD
Retailer 10$10,826 AUD
Retailer 8$10,993 AUD
Retailer 4$11,205 AUD
Retailer 2$12,321 AUD
Retailer 11$12,492 AUD
Retailer 5$16,744 AUD
NZ Jewellers$19,987 AUD

38 data points across 11 retailers

19 retailers$8,875 AUD to $19,987 AUD

B+
Cheapest Retailer
-
$8,875 AUD
$6,234 USD
B+
Retailer 2
-
$8,969 AUD
$6,300 USD
View
B+
Retailer 3
-
$9,033 AUD
$6,345 USD
View
B+
Retailer 4
-
$9,301 AUD
View
B+
Retailer 5
-
$9,443 AUD
$6,633 USD
View
B+
Retailer 6
-
$9,994 AUD
$7,020 USD
View
B
Retailer 7
-
$9,994 AUD
$7,020 USD
View
Final sale: no returns
B
Retailer 8
-
$10,644 AUD
$7,476 USD
View
B+
Retailer 9
-
$10,826 AUD
$7,605 USD
View
B+
Retailer 10
-
$10,993 AUD
$7,722 USD
View
B+
Retailer 11
-
$11,205 AUD
£6,198 GBP
View
B
Retailer 12
-
$11,802 AUD
$8,290 USD
View
B
Retailer 13
-
$11,802 AUD
$8,290 USD
View
B
Retailer 14
-
$12,186 AUD
$8,560 USD
View
B
Retailer 15
-
$12,321 AUD
€8,243 EUR
View
B
Retailer 16
-
$12,492 AUD
$8,775 USD
View
Retailer 17
-
$13,163 AUD
$9,246 USD
View
Price last confirmed 9 days ago
B
Retailer 18
-
$16,744 AUD
£9,261 GBP
View
Most Expensive
B
NZ Jewellers
bce9b288-bbd7-49aa-8d67-ae191e7ce395 · Oct 30
$19,987 AUD
$14,040 USD
View
18 more retailers have this diamond
Prices start from $8,875 AUDSave up to $11,113 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.

B+
1.50ct Round
$8,875 AUD