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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 $7,131 NZD
HK$31,400 HKD
As of November 1, 2026
Save $9,086 NZD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $16,217 NZD 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 $7,131 to $16,217, a $9,086 spread on the same certified stone. NZ Jewellers lists it at $16,217. 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: $16,217 NZD|Low: $7,021 NZD|High: $16,253 NZD|Avg: $9,884 NZD
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$7,131 NZD
Retailer 6$7,239 NZD
Retailer 18$7,496 NZD
Retailer 5$8,109 NZD
Retailer 9$8,250 NZD
Retailer 3$8,785 NZD
Retailer 10$8,785 NZD
Retailer 4$9,246 NZD
Retailer 11$9,399 NZD
Retailer 7$9,847 NZD
Retailer 16$9,847 NZD
Retailer 13$9,950 NZD
Retailer 8$10,137 NZD
Retailer 17$10,167 NZD
Retailer 2$10,488 NZD
Retailer 15$10,699 NZD
Retailer 14$15,528 NZD
NZ Jewellers$16,217 NZD

36 data points across 18 retailers

18 retailers$7,131 NZD to $16,217 NZD

A
Cheapest Retailer
-
$7,131 NZD
HK$31,400 HKD
A
Retailer 2
-
$7,239 NZD
$4,080 USD
View
A
Retailer 3
-
$7,496 NZD
$4,225 USD
View
B+
Retailer 4
-
$8,109 NZD
$4,570 USD
View
Final sale: no returns
B+
Retailer 5
-
$8,250 NZD
$4,650 USD
View
B+
Retailer 6
-
$8,785 NZD
$4,951 USD
View
B+
Retailer 7
-
$8,785 NZD
$4,951 USD
View
B+
Retailer 8
-
$9,246 NZD
$5,211 USD
View
B+
Retailer 9
-
$9,399 NZD
£4,171 GBP
View
B+
Retailer 10
-
$9,847 NZD
$5,550 USD
View
B+
Retailer 11
-
$9,847 NZD
$5,550 USD
View
B+
Retailer 12
-
$9,950 NZD
€5,341 EUR
View
B+
Retailer 13
-
$10,137 NZD
$5,713 USD
View
B+
Retailer 14
-
$10,167 NZD
$5,730 USD
View
B+
Retailer 15
-
$10,488 NZD
£4,655 GBP
View
Retailer 16
-
$10,699 NZD
$6,030 USD
View
Price last confirmed 9 days ago
B
Retailer 17
-
$15,528 NZD
£6,891 GBP
View
Most Expensive
B
NZ Jewellers
714a9b61-9224-4925-ae64-248397bf7913 · Oct 30
$16,217 NZD
$9,140 USD
View
17 more retailers have this diamond
Prices start from $7,131 NZDSave up to $9,086 NZD

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
$7,131 NZD