Radiant|Natural|GIA

1.50ct I SI1 Radiant Natural Diamond

ID • I/SI1 • GIA 2567450930

Certificate GIA 2567450930

Diamond specifications and retailer prices

From $4,120 USD
As of November 1, 2026
Save $4,858 USD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $9,539 USD at NZ Jewellers · As of October 14, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2567450930. Listed at 20 retailers as of October 29, 2026, with a 118% 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
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2567450930
Dimensions7.43 × 5.68 × 3.95 mm
L/W Ratio1.31
Girdle conditionPolished
Top View
7.43 mm5.68 mm1.50 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2567450930
Side View
Table 67.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.4%

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: $9,539 USD|Low: $3,981 USD|High: $9,539 USD|Avg: $5,675 USD
NZ Jewellers
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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 1, 2026
Retailer 13$4,120 USD
Retailer 19$4,122 USD
Retailer 7$4,386 USD
Retailer 6$4,531 USD
Retailer 4$4,593 USD
Retailer 16$4,628 USD
Retailer 11$4,688 USD
Retailer 10$4,775 USD
Retailer 9$4,834 USD
Retailer 8$4,905 USD
Retailer 2$4,970 USD
Retailer 12$5,101 USD
Retailer 17$5,127 USD
Retailer 15$5,321 USD
Retailer 21$5,376 USD
Retailer 14$5,755 USD
Retailer 20$6,248 USD
Retailer 18$6,892 USD
Retailer 5$8,501 USD
Retailer 3$8,978 USD
NZ Jewellers$9,539 USD

17 data points across 21 retailers

20 retailers$4,120 USD to $8,978 USD

A
Cheapest Retailer
-
$4,120 USD
A
Retailer 2
-
$4,122 USD
HK$32,200 HKD
View
A
Retailer 3
-
$4,386 USD
View
A
Retailer 4
-
$4,531 USD
View
A
Retailer 5
-
$4,593 USD
View
A
Retailer 6
-
$4,628 USD
€4,407 EUR
View
A
Retailer 7
-
$4,688 USD
View
Final sale: no returns
A
Retailer 8
-
$4,775 USD
View
A
Retailer 9
-
$4,834 USD
A$7,437 AUD
View
A
Retailer 10
-
$4,905 USD
View
A
Retailer 11
-
$4,970 USD
View
Retailer 12
-
$5,101 USD
SGD 6,893 SGD
View
Price last confirmed 16 days ago
A
Retailer 13
-
$5,127 USD
£4,037 GBP
View
A
Retailer 14
-
$5,321 USD
£4,189 GBP
View
A
Retailer 15
-
$5,376 USD
View
B+
Retailer 16
-
$6,248 USD
€5,950 EUR
View
B+
Retailer 17
-
$6,892 USD
ZAR 111,341 ZAR
View
B
Retailer 18
-
$8,501 USD
View
B
Retailer 19
-
$8,978 USD
£7,069 GBP
View
Most Expensive
NZ Jewellers
76fc132b-6cf7-488f-ba27-598bdc682ed1 · Oct 14
$9,539 USD
View
Price last confirmed 18 days ago
19 more retailers have this diamond
Prices start from $4,120 USDSave up to $4,858 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.

A
1.50ct Radiant
$4,120 USD