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Radiant|Natural|GIA

1.50ct I SI2 Radiant Natural Diamond

EX • I/SI2 • GIA 6455478582

Certificate GIA 6455478582

Diamond specifications and retailer prices

From $9,191 NZD
As of November 4, 2026
Save $2,354 NZD (20%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $19,457 NZD at NZ Jewellers · As of September 27, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6455478582. Listed at 17 retailers as of November 4, 2026, with a 26% 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6455478582
Dimensions7.31 × 5.77 × 3.63 mm
L/W Ratio1.27
Top View
7.31 mm5.77 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6455478582
Side View
Table 67.0%CrownGirdle: ThickPavilionCulet: NoneDepth 62.8%

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: $10,212 NZD|Low: $8,107 NZD|High: $12,826 NZD|Avg: $10,170 NZD|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 11$9,191 NZD
Retailer 4$9,200 NZD
Retailer 6$9,456 NZD
Retailer 5$9,728 NZD
Retailer 2$9,988 NZD
Retailer 1$10,212 NZD
Retailer 3$10,282 NZD
Retailer 10$10,399 NZD
Retailer 8$10,473 NZD
Retailer 7$10,538 NZD
Retailer 9$12,826 NZD

39 data points across 11 retailers

17 retailers$9,191 NZD to $11,545 NZD

A
Cheapest Retailer
-
$9,191 NZD
A
Retailer 2
-
$9,200 NZD
View
A
Retailer 3
-
$9,456 NZD
View
A
Retailer 4
-
$9,728 NZD
View
Final sale: no returns
B+
Retailer 5
-
$9,988 NZD
View
A
Retailer 6
-
$10,212 NZD
View
B+
Retailer 7
-
$10,399 NZD
View
B+
Retailer 8
-
$10,473 NZD
View
Retailer 9
-
$10,538 NZD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$10,538 NZD
View
Retailer 11
-
$10,538 NZD
View
Price last confirmed 40 days ago
B+
Retailer 12
-
$11,184 NZD
View
B+
Retailer 13
-
$11,184 NZD
View
B+
Retailer 14
-
$11,545 NZD
View
Retailer 15
-
$12,160 NZD
View
Price last confirmed 40 days ago
Retailer 16
-
$12,826 NZD
View
Price last confirmed 15 days ago
Most Expensive
NZ Jewellers
e5ef375c-68b4-49ed-8aee-4848566a0321 · Sep 27
$19,457 NZD
$10,786 USD
View
Price last confirmed 40 days ago
16 more retailers have this diamond
Prices start from $9,191 NZDSave up to $2,354 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
$9,191 NZD