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Round|Natural|GIA

1.50ct I SI2 Round Natural Diamond

VG • I/SI2 • GIA 2428351005

Certificate GIA 2428351005

Diamond specifications and retailer prices

From $5,722 AUD
HK$31,400 HKD
As of November 1, 2026
Save $7,290 AUD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $13,012 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 very-good cut grade and certified by GIA 2428351005. Listed at 18 retailers as of October 30, 2026, with prices from $5,722 to $13,012, a $7,290 spread on the same certified stone. NZ Jewellers lists it at $13,012. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2428351005
Dimensions7.20 × 7.12 × 4.59 mm
L/W Ratio1.01
Top View
7.20 mm7.12 mm1.50 ctI / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 2428351005
Side View
Table 57.0%Crown 38°Girdle: MED-THKPavilion 40.6°Culet: NoneDepth 64.1%

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: $13,012 AUD|Low: $5,633 AUD|High: $13,041 AUD|Avg: $7,930 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 1, 2026
Retailer 12$5,722 AUD
Retailer 6$5,808 AUD
Retailer 18$6,015 AUD
Retailer 5$6,506 AUD
Retailer 9$6,620 AUD
Retailer 3$7,048 AUD
Retailer 10$7,048 AUD
Retailer 4$7,418 AUD
Retailer 11$7,541 AUD
Retailer 7$7,901 AUD
Retailer 16$7,901 AUD
Retailer 13$7,984 AUD
Retailer 8$8,133 AUD
Retailer 17$8,157 AUD
Retailer 2$8,415 AUD
Retailer 15$8,584 AUD
Retailer 14$12,459 AUD
NZ Jewellers$13,012 AUD

36 data points across 18 retailers

18 retailers$5,722 AUD to $13,012 AUD

A
Cheapest Retailer
-
$5,722 AUD
HK$31,400 HKD
A
Retailer 2
-
$5,808 AUD
$4,080 USD
View
A
Retailer 3
-
$6,015 AUD
$4,225 USD
View
B+
Retailer 4
-
$6,506 AUD
$4,570 USD
View
Final sale: no returns
B+
Retailer 5
-
$6,620 AUD
$4,650 USD
View
B+
Retailer 6
-
$7,048 AUD
$4,951 USD
View
B+
Retailer 7
-
$7,048 AUD
$4,951 USD
View
B+
Retailer 8
-
$7,418 AUD
$5,211 USD
View
B+
Retailer 9
-
$7,541 AUD
£4,171 GBP
View
B+
Retailer 10
-
$7,901 AUD
$5,550 USD
View
B+
Retailer 11
-
$7,901 AUD
$5,550 USD
View
B+
Retailer 12
-
$7,984 AUD
€5,341 EUR
View
B+
Retailer 13
-
$8,133 AUD
$5,713 USD
View
B+
Retailer 14
-
$8,157 AUD
$5,730 USD
View
B+
Retailer 15
-
$8,415 AUD
£4,655 GBP
View
Retailer 16
-
$8,584 AUD
$6,030 USD
View
Price last confirmed 9 days ago
B
Retailer 17
-
$12,459 AUD
£6,891 GBP
View
Most Expensive
B
NZ Jewellers
714a9b61-9224-4925-ae64-248397bf7913 · Oct 30
$13,012 AUD
$9,140 USD
View
17 more retailers have this diamond
Prices start from $5,722 AUDSave up to $7,290 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
$5,722 AUD