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Round|Natural|GIA

1.50ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 6521025685

Certificate GIA 6521025685

Diamond specifications and retailer prices

From $8,106 AUD
$5,694 USD
As of October 30, 2026
Save $10,115 AUD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $18,221 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6521025685. Listed at 18 retailers as of October 30, 2026, with prices from $8,106 to $18,221, a $10,115 spread on the same certified stone. NZ Jewellers lists it at $18,221. 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
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6521025685
Dimensions7.31 × 7.27 × 4.55 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.31 mm7.27 mm1.50 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6521025685
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

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: Oct 30
Current: $11,290 AUD|Low: $7,901 AUD|High: $15,364 AUD|Avg: $10,615 AUD|+4.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 7$8,106 AUD
Retailer 5$8,236 AUD
Retailer 6$9,108 AUD
Retailer 4$9,110 AUD
Retailer 2$10,201 AUD
Retailer 1$11,290 AUD
Retailer 8$12,004 AUD
Retailer 3$15,263 AUD

39 data points across 8 retailers

18 retailers$8,106 AUD to $18,221 AUD

A
Cheapest Retailer
-
$8,106 AUD
$5,694 USD
A
Retailer 2
-
$8,223 AUD
$5,776 USD
View
Retailer 3
-
$8,236 AUD
$5,785 USD
View
Price last confirmed 9 days ago
A
Retailer 4
-
$8,607 AUD
$6,046 USD
View
B+
Retailer 5
-
$9,108 AUD
$6,398 USD
View
Final sale: no returns
A
Retailer 6
-
$9,110 AUD
$6,399 USD
View
B+
Retailer 7
-
$9,705 AUD
$6,817 USD
View
B+
Retailer 8
-
$9,870 AUD
$6,933 USD
View
B+
Retailer 9
-
$10,021 AUD
$7,039 USD
View
B+
Retailer 10
-
$10,201 AUD
£5,642 GBP
View
B+
Retailer 11
-
$10,777 AUD
$7,570 USD
View
B+
Retailer 12
-
$10,777 AUD
$7,570 USD
View
B+
Retailer 13
-
$11,133 AUD
$7,820 USD
View
B+
Retailer 14
-
$11,290 AUD
€7,553 EUR
View
B+
Retailer 15
-
$11,387 AUD
$7,999 USD
View
Retailer 16
-
$12,004 AUD
$8,432 USD
View
Price last confirmed 8 days ago
B
Retailer 17
-
$15,263 AUD
£8,442 GBP
View
Most Expensive
B
NZ Jewellers
57a3d89b-bc2c-4776-b3ea-1270dab81dc9 · Oct 30
$18,221 AUD
$12,799 USD
View
17 more retailers have this diamond
Prices start from $8,106 AUDSave up to $10,115 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
$8,106 AUD