Radiant|Natural|GIA

1.50ct I SI1 Radiant Natural Diamond

GD • I/SI1 • GIA 2507747553

Certificate GIA 2507747553

Diamond specifications and retailer prices

From $6,510 USD
As of October 28, 2026
Save $7,530 USD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $14,040 USD 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 $6,510 to $14,040, a $7,530 spread on the same certified stone. NZ Jewellers lists it at $14,040. 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
Color
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: $14,040 USD|Low: $6,510 USD|High: $14,040 USD|Avg: $8,807 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 8$6,510 USD
Retailer 3$7,020 USD
Retailer 11$7,020 USD
Retailer 10$7,605 USD
Retailer 9$7,722 USD
Retailer 4$7,859 USD
Retailer 7$8,051 USD
Retailer 6$8,655 USD
Retailer 5$10,313 USD
Retailer 2$11,699 USD
NZ Jewellers$14,040 USD

45 data points across 11 retailers

19 retailers$6,510 USD to $14,040 USD

B+
Cheapest Retailer
-
$6,510 USD
B+
Retailer 2
-
$6,633 USD
View
B
Retailer 3
-
$7,020 USD
View
B
Retailer 4
-
$7,020 USD
View
B
Retailer 5
-
$7,079 USD
View
B
Retailer 6
-
$7,605 USD
View
B
Retailer 7
-
$7,722 USD
View
B
Retailer 8
-
$7,859 USD
£6,188 GBP
View
Retailer 9
-
$8,051 USD
A$12,386 AUD
View
Price last confirmed 10 days ago
B
Retailer 10
-
$8,321 USD
View
B
Retailer 11
-
$8,390 USD
View
B
Retailer 12
-
$8,390 USD
View
B
Retailer 13
-
$8,454 USD
View
B
Retailer 14
-
$8,655 USD
€8,243 EUR
View
B
Retailer 15
-
$8,670 USD
View
B
Retailer 16
-
$8,775 USD
View
B
Retailer 17
-
$10,313 USD
ZAR 166,605 ZAR
View
B
Retailer 18
-
$11,699 USD
£9,212 GBP
View
Most Expensive
C
NZ Jewellers
d28598f7-8273-41f0-a3c3-53f2e777a7d0 · Oct 30
$14,040 USD
View
18 more retailers have this diamond
Prices start from $6,510 USDSave up to $7,530 USD

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
$6,510 USD