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Round|Natural|GIA

1.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6435526632

Certificate GIA 6435526632

Diamond specifications and retailer prices

From $5,550 NZD
As of November 4, 2026
Save $6,529 NZD (54%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $13,804 NZD at NZ Jewellers · As of September 25, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6435526632. Listed at 16 retailers as of November 1, 2026, with a 118% 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6435526632
Dimensions7.33 × 7.29 × 4.56 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.33 mm7.29 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6435526632
Side View
Table 57.0%Crown 36°Girdle: MediumPavilion 41°Culet: NoneDepth 62.4%

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 4
Current: $7,270 NZD|Low: $5,550 NZD|High: $12,755 NZD|Avg: $7,225 NZD|-7.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 12$5,550 NZD
Retailer 8$5,621 NZD
Retailer 4$5,643 NZD
Retailer 13$5,808 NZD
Retailer 2$6,075 NZD
Retailer 3$6,146 NZD
Retailer 10$6,280 NZD
Retailer 11$6,545 NZD
Retailer 1$7,270 NZD
Retailer 7$7,898 NZD
Retailer 5$8,176 NZD
Retailer 6$8,816 NZD
Retailer 9$12,079 NZD

43 data points across 13 retailers

16 retailers$5,550 NZD to $12,079 NZD

A
Cheapest Retailer
-
$5,550 NZD
A
Retailer 2
-
$5,621 NZD
View
A
Retailer 3
-
$5,643 NZD
View
A
Retailer 4
-
$5,808 NZD
View
A
Retailer 5
-
$6,075 NZD
View
A
Retailer 6
-
$6,146 NZD
View
A
Retailer 7
-
$6,280 NZD
View
Retailer 8
-
$6,545 NZD
View
Price last confirmed 13 days ago
Retailer 9
-
$7,178 NZD
View
Price last confirmed 45 days ago
B+
Retailer 10
-
$7,270 NZD
View
B+
Retailer 11
-
$7,898 NZD
View
Retailer 12
-
$8,176 NZD
View
Price last confirmed 14 days ago
Retailer 13
-
$8,283 NZD
View
Price last confirmed 45 days ago
B+
Retailer 14
-
$8,816 NZD
View
B
Retailer 15
-
$12,079 NZD
View
Most Expensive
NZ Jewellers
2bf72783-4f62-4dcf-9291-b59d4f1f36b8 · Sep 25
$13,804 NZD
$7,760 USD
View
Price last confirmed 42 days ago
15 more retailers have this diamond
Prices start from $5,550 NZDSave up to $6,529 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
$5,550 NZD