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Round|Natural|GIA

1.50ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6452167699

Certificate GIA 6452167699

Diamond specifications and retailer prices

From $11,137 AUD
$7,823 USD
As of October 30, 2026
Save $9,312 AUD (46%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $20,449 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 6452167699. Listed at 18 retailers as of October 30, 2026, with prices from $11,137 to $20,449, a $9,312 spread on the same certified stone. NZ Jewellers lists it at $20,449. 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°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6452167699
Dimensions7.39 × 7.35 × 4.46 mm
L/W Ratio1.01
Star length45%
Lower girdle75%
Top View
7.39 mm7.35 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6452167699
Side View
Table 62.0%Crown 33°Girdle: Slightly ThickPavilion 41.6°Culet: NoneDepth 60.4%

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 30
Current: $20,449 AUD|Low: $10,224 AUD|High: $20,449 AUD|Avg: $15,023 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 7$10,933 AUD
Retailer 8$12,269 AUD
Retailer 11$12,269 AUD
Retailer 12$13,291 AUD
Retailer 6$13,318 AUD
Retailer 9$13,496 AUD
Retailer 2$15,202 AUD
Retailer 10$15,336 AUD
Retailer 3$16,149 AUD
Retailer 4$17,490 AUD
Retailer 5$19,161 AUD
NZ Jewellers$20,449 AUD

38 data points across 12 retailers

18 retailers$11,137 AUD to $20,449 AUD

Retailer 1
-
$10,933 AUD
$7,680 USD
Price last confirmed 14 days ago
B+
Retailer 2
-
$11,137 AUD
$7,823 USD
View
B
Retailer 3
-
$11,488 AUD
$8,070 USD
View
B
Retailer 4
-
$11,975 AUD
CA$11,683 CAD
View
B
Retailer 5
-
$12,269 AUD
$8,618 USD
View
B
Retailer 6
-
$12,269 AUD
$8,618 USD
View
Final sale: no returns
B
Retailer 7
-
$13,291 AUD
$9,336 USD
View
B
Retailer 8
-
$13,318 AUD
£7,366 GBP
View
B
Retailer 9
-
$13,496 AUD
$9,480 USD
View
B
Retailer 10
-
$14,119 AUD
$9,918 USD
View
B
Retailer 11
-
$14,492 AUD
$10,180 USD
View
B
Retailer 12
-
$14,492 AUD
$10,180 USD
View
B
Retailer 13
-
$14,976 AUD
$10,520 USD
View
B
Retailer 14
-
$15,202 AUD
€10,170 EUR
View
B
Retailer 15
-
$15,336 AUD
$10,773 USD
View
Retailer 16
-
$16,149 AUD
$11,344 USD
View
Price last confirmed 9 days ago
B
Retailer 17
-
$19,161 AUD
£10,598 GBP
View
Most Expensive
B
NZ Jewellers
7873b98c-a4e4-4365-a09c-061d1d43ec55 · Oct 30
$20,449 AUD
$14,364 USD
View
17 more retailers have this diamond
Prices start from $11,137 AUDSave up to $9,312 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
$11,137 AUD