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Round|Natural|GIA

1.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6552666632

Certificate GIA 6552666632

Diamond specifications and retailer prices

From $6,949 NZD
As of November 6, 2026
Save $8,092 NZD (54%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $16,755 NZD at NZ Jewellers · As of October 3, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552666632. Listed at 10 retailers as of November 4, 2026, with a 116% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6552666632
Dimensions7.21 × 7.27 × 4.55 mm
L/W Ratio1.01
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
7.21 mm7.27 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552666632
Side View
Table 57.0%CrownGirdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.9%

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 6
Current: $9,687 NZD|Low: $6,949 NZD|High: $16,322 NZD|Avg: $10,154 NZD|-8.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5$6,949 NZD
Retailer 4$7,916 NZD
Retailer 6$8,309 NZD
Retailer 7$8,944 NZD
Retailer 1$9,687 NZD
Retailer 2$10,609 NZD
Retailer 3$15,041 NZD

38 data points across 7 retailers

10 retailers$6,949 NZD to $15,041 NZD

A
Cheapest Retailer
-
$6,949 NZD
A
Retailer 2
-
$7,916 NZD
View
A
Retailer 3
-
$8,309 NZD
View
Retailer 4
-
$8,944 NZD
View
Price last confirmed 10 days ago
A
Retailer 5
-
$9,687 NZD
View
Retailer 6
-
$9,907 NZD
View
Price last confirmed 30 days ago
Retailer 7
-
$10,127 NZD
View
Price last confirmed 38 days ago
B+
Retailer 8
-
$10,609 NZD
View
B
Retailer 9
-
$15,041 NZD
View
Most Expensive
NZ Jewellers
2d7a0237-178a-4684-bb3e-0b57bca90f86 · Oct 3
$16,755 NZD
$9,288 USD
View
Price last confirmed 34 days ago
9 more retailers have this diamond
Prices start from $6,949 NZDSave up to $8,092 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
$6,949 NZD