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Radiant|Natural|GIA

1.50ct K SI1 Radiant Natural Diamond

EX • K/SI1 • GIA 6542466536

Certificate GIA 6542466536

Diamond specifications and retailer prices

From $3,902 NZD
As of November 6, 2026
Save $5,085 NZD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $10,832 NZD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant 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 stated by the retailer rather than the lab and certified by GIA 6542466536. Listed at 18 retailers as of November 4, 2026, with a 130% 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6542466536
Dimensions7.68 × 5.72 × 3.86 mm
L/W Ratio1.34
Top View
7.68 mm5.72 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6542466536
Side View
Table 68.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 67.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,880 NZD|Low: $3,902 NZD|High: $9,106 NZD|Avg: $5,701 NZD|-3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 2$3,902 NZD
Retailer 4$4,167 NZD
Retailer 9$4,595 NZD
Retailer 1$4,880 NZD
Retailer 5$4,990 NZD
Retailer 6$5,437 NZD
Retailer 3$5,444 NZD
Retailer 7$5,987 NZD
Retailer 8$6,278 NZD
Retailer 10$8,987 NZD

25 data points across 10 retailers

18 retailers$3,902 NZD to $8,987 NZD

A
Cheapest Retailer
-
$3,902 NZD
A
Retailer 2
-
$4,167 NZD
View
A
Retailer 3
-
$4,595 NZD
View
A
Retailer 4
-
$4,880 NZD
View
A
Retailer 5
-
$4,880 NZD
View
A
Retailer 6
-
$4,990 NZD
View
Retailer 7
-
$5,181 NZD
View
Price last confirmed 30 days ago
Retailer 8
-
$5,181 NZD
View
Price last confirmed 30 days ago
A
Retailer 9
-
$5,192 NZD
View
Retailer 10
-
$5,381 NZD
View
Price last confirmed 38 days ago
A
Retailer 11
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$5,397 NZD
View
A
Retailer 12
-
$5,437 NZD
View
A
Retailer 13
-
$5,444 NZD
View
Retailer 14
-
$5,978 NZD
View
Price last confirmed 29 days ago
A
Retailer 15
-
$5,987 NZD
View
A
Retailer 16
-
$6,278 NZD
View
B
Retailer 17
-
$8,987 NZD
View
Most Expensive
NZ Jewellers
26738c81-d90b-4ff3-af35-ecd2c1c77dc9 · Sep 30
$10,832 NZD
$6,005 USD
View
Price last confirmed 37 days ago
17 more retailers have this diamond
Prices start from $3,902 NZDSave up to $5,085 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 Radiant
$3,902 NZD