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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 $9,268 AUD
$6,510 USD
As of October 28, 2026
Save $10,720 AUD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $19,987 AUD 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 $9,268 to $19,987, a $10,720 spread on the same certified stone. NZ Jewellers lists it at $19,987. 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: $19,987 AUD|Low: $9,268 AUD|High: $19,987 AUD|Avg: $12,546 AUD
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$9,268 AUD
Retailer 3$9,994 AUD
Retailer 11$9,994 AUD
Retailer 10$10,826 AUD
Retailer 9$10,993 AUD
Retailer 4$11,282 AUD
Retailer 7$11,462 AUD
Retailer 2$12,359 AUD
Retailer 6$14,681 AUD
Retailer 5$16,655 AUD
NZ Jewellers$19,987 AUD

45 data points across 11 retailers

19 retailers$9,268 AUD to $19,987 AUD

B+
Cheapest Retailer
-
$9,268 AUD
$6,510 USD
B+
Retailer 2
-
$9,443 AUD
$6,633 USD
View
B
Retailer 3
-
$9,994 AUD
$7,020 USD
View
B
Retailer 4
-
$9,994 AUD
$7,020 USD
View
B
Retailer 5
-
$10,078 AUD
$7,079 USD
View
B
Retailer 6
-
$10,826 AUD
$7,605 USD
View
B
Retailer 7
-
$10,993 AUD
$7,722 USD
View
B
Retailer 8
-
$11,282 AUD
£6,240 GBP
View
Retailer 9
-
$11,462 AUD
View
Price last confirmed 11 days ago
B
Retailer 10
-
$11,846 AUD
$8,321 USD
View
B
Retailer 11
-
$11,944 AUD
$8,390 USD
View
B
Retailer 12
-
$11,944 AUD
$8,390 USD
View
B
Retailer 13
-
$12,036 AUD
$8,454 USD
View
B
Retailer 14
-
$12,343 AUD
$8,670 USD
View
B
Retailer 15
-
$12,359 AUD
€8,268 EUR
View
B
Retailer 16
-
$12,492 AUD
$8,775 USD
View
B
Retailer 17
-
$14,681 AUD
ZAR 166,605 ZAR
View
B
Retailer 18
-
$16,655 AUD
£9,212 GBP
View
Most Expensive
C
NZ Jewellers
d28598f7-8273-41f0-a3c3-53f2e777a7d0 · Oct 30
$19,987 AUD
$14,040 USD
View
18 more retailers have this diamond
Prices start from $9,268 AUDSave up to $10,720 AUD

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
$9,268 AUD