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Radiant|Natural|GIA

1.50ct I SI2 Radiant Natural Diamond

EX • I/SI2 • GIA 7551478920

Certificate GIA 7551478920

Diamond specifications and retailer prices

From $9,254 NZD
As of November 1, 2026
Save $7,998 NZD (46%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $19,587 NZD at NZ Jewellers · As of September 20, 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 7551478920. Listed at 23 retailers as of November 1, 2026, with a 86% 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
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7551478920
Dimensions7.54 × 5.73 × 3.92 mm
L/W Ratio1.32
Culet sizeNone
Top View
7.54 mm5.73 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7551478920
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.5%

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: $11,152 NZD|Low: $8,776 NZD|High: $17,658 NZD|Avg: $12,171 NZD
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
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 3$9,254 NZD
Retailer 2$9,875 NZD
Retailer 5$10,468 NZD
Retailer 12$10,491 NZD
Retailer 16$10,611 NZD
Retailer 15$10,739 NZD
Retailer 1$11,152 NZD
Retailer 9$11,233 NZD
Retailer 6$11,834 NZD
Retailer 8$11,834 NZD
Retailer 13$11,978 NZD
Retailer 4$12,230 NZD
Retailer 11$12,791 NZD
Retailer 7$12,914 NZD
Retailer 14$17,144 NZD
Retailer 10$17,252 NZD

32 data points across 16 retailers

23 retailers$9,254 NZD to $17,252 NZD

A
Cheapest Retailer
-
$9,254 NZD
B+
Retailer 2
-
$9,875 NZD
View
B+
Retailer 3
-
$10,468 NZD
View
B+
Retailer 4
-
$10,491 NZD
View
Retailer 5
-
$10,611 NZD
View
Price last confirmed 46 days ago
Retailer 6
-
$10,611 NZD
View
Price last confirmed 38 days ago
Retailer 7
-
$10,611 NZD
View
Price last confirmed 37 days ago
B+
Retailer 8
-
$10,739 NZD
View
B+
Retailer 9
-
$11,152 NZD
View
B+
Retailer 10
-
$11,233 NZD
View
B+
Retailer 11
-
$11,834 NZD
View
B+
Retailer 12
-
$11,834 NZD
View
B+
Retailer 13
-
$11,978 NZD
View
B
Retailer 14
-
$12,230 NZD
View
Retailer 15
-
$12,241 NZD
View
Price last confirmed 62 days ago
Retailer 16
-
$12,241 NZD
View
Price last confirmed 39 days ago
Retailer 17
-
$12,241 NZD
View
Price last confirmed 46 days ago
B
Retailer 18
-
$12,791 NZD
View
Retailer 19
-
$12,914 NZD
View
Price last confirmed 15 days ago
Retailer 20
-
$17,144 NZD
View
Price last confirmed 11 days ago
B
Retailer 21
-
$17,252 NZD
View
Retailer 22
-
$19,587 NZD
View
Price last confirmed 38 days ago
Most Expensive
NZ Jewellers
ce6e203c-c250-486e-8e7a-41ef796e6950 · Sep 20
$19,587 NZD
$10,858 USD
View
Price last confirmed 47 days ago
22 more retailers have this diamond
Prices start from $9,254 NZDSave up to $7,998 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
$9,254 NZD