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Radiant|Natural|GIA

1.50ct I SI1 Radiant Natural Diamond

GD • I/SI1 • GIA 2507747553

Certificate GIA 2507747553

Diamond specifications and retailer prices

From $11,570 NZD
$6,510 USD
As of October 28, 2026
Save $13,383 NZD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $24,953 NZD at NZ Jewellers · As of October 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2507747553. Listed at 19 retailers as of October 28, 2026, with prices from $11,570 to $24,953, a $13,383 spread on the same certified stone. NZ Jewellers lists it at $24,953. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2507747553
Dimensions8.11 × 5.77 × 3.98 mm
L/W Ratio1.41
Top View
8.11 mm5.77 mm1.50 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2507747553
Side View
Table 64.0%CrownGirdle: ThickPavilionCulet: NoneDepth 68.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $24,953 NZD|Low: $11,570 NZD|High: $24,953 NZD|Avg: $15,680 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 8$11,570 NZD
Retailer 3$12,477 NZD
Retailer 11$12,477 NZD
Retailer 10$13,516 NZD
Retailer 9$13,724 NZD
Retailer 4$14,085 NZD
Retailer 7$14,309 NZD
Retailer 2$15,429 NZD
Retailer 6$18,329 NZD
Retailer 5$20,793 NZD
NZ Jewellers$24,953 NZD

44 data points across 11 retailers

19 retailers$11,570 NZD to $24,953 NZD

B+
Cheapest Retailer
-
$11,570 NZD
$6,510 USD
B+
Retailer 2
-
$11,789 NZD
$6,633 USD
View
B
Retailer 3
-
$12,477 NZD
$7,020 USD
View
B
Retailer 4
-
$12,477 NZD
$7,020 USD
View
B
Retailer 5
-
$12,582 NZD
$7,079 USD
View
B
Retailer 6
-
$13,516 NZD
$7,605 USD
View
B
Retailer 7
-
$13,724 NZD
$7,722 USD
View
B
Retailer 8
-
$14,085 NZD
£6,240 GBP
View
Retailer 9
-
$14,309 NZD
A$12,386 AUD
View
Price last confirmed 11 days ago
B
Retailer 10
-
$14,789 NZD
$8,321 USD
View
B
Retailer 11
-
$14,912 NZD
$8,390 USD
View
B
Retailer 12
-
$14,912 NZD
$8,390 USD
View
B
Retailer 13
-
$15,026 NZD
$8,454 USD
View
B
Retailer 14
-
$15,409 NZD
$8,670 USD
View
B
Retailer 15
-
$15,429 NZD
€8,268 EUR
View
B
Retailer 16
-
$15,596 NZD
$8,775 USD
View
B
Retailer 17
-
$18,329 NZD
ZAR 166,605 ZAR
View
B
Retailer 18
-
$20,793 NZD
£9,212 GBP
View
Most Expensive
C
NZ Jewellers
d28598f7-8273-41f0-a3c3-53f2e777a7d0 · Oct 30
$24,953 NZD
$14,040 USD
View
18 more retailers have this diamond
Prices start from $11,570 NZDSave up to $13,383 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.

B+
1.50ct Radiant
$11,570 NZD