Radiant|Natural|GIA

1.50ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 1545488189

Certificate GIA 1545488189

Diamond specifications and retailer prices

From $4,058 USD
HK$31,700 HKD
As of November 1, 2026
Save $4,468 USD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $9,369 USD at NZ Jewellers · As of September 25, 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 H 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 1545488189. Listed at 21 retailers as of November 1, 2026, with a 110% 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
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle34.1°
OriginNatural
Grading LabGIA
CertificateGIA 1545488189
Dimensions7.30 × 5.60 × 3.90 mm
L/W Ratio1.30
Girdle conditionPolished
Top View
7.30 mm5.60 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545488189
Side View
Table 70.0%CrownGirdle: ThickPavilion 34.1°Culet: NoneDepth 69.7%

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: $4,535 USD|Low: $4,045 USD|High: $8,741 USD|Avg: $5,485 USD|-1.9%
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
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 16$4,058 USD
Retailer 7$4,104 USD
Retailer 13$4,332 USD
Retailer 1$4,535 USD
Retailer 9$4,576 USD
Retailer 2$4,595 USD
Retailer 10$4,600 USD
Retailer 14$4,800 USD
Retailer 6$4,825 USD
Retailer 18$4,835 USD
Retailer 15$4,850 USD
Retailer 5$5,166 USD
Retailer 12$5,291 USD
Retailer 11$5,539 USD
Retailer 4$6,097 USD
Retailer 17$6,510 USD
Retailer 3$6,623 USD
Retailer 8$8,491 USD
Retailer 19$8,526 USD

26 data points across 19 retailers

21 retailers$4,058 USD to $8,526 USD

A
Cheapest Retailer
-
$4,058 USD
HK$31,700 HKD
A
Retailer 2
-
$4,104 USD
View
A
Retailer 3
-
$4,332 USD
View
A
Retailer 4
-
$4,535 USD
View
Final sale: no returns
A
Retailer 5
-
$4,576 USD
View
A
Retailer 6
-
$4,595 USD
€4,377 EUR
View
A
Retailer 7
-
$4,600 USD
View
A
Retailer 8
-
$4,800 USD
A$7,384 AUD
View
A
Retailer 9
-
$4,825 USD
View
A
Retailer 10
-
$4,835 USD
View
A
Retailer 11
-
$4,850 USD
View
A
Retailer 12
-
$5,166 USD
View
A
Retailer 13
-
$5,291 USD
£4,166 GBP
View
Retailer 14
-
$5,539 USD
A$8,521 AUD
View
Price last confirmed 23 days ago
B+
Retailer 15
-
$5,563 USD
A$8,558 AUD
View
B+
Retailer 16
-
$6,097 USD
€5,807 EUR
View
B+
Retailer 17
-
$6,510 USD
View
B+
Retailer 18
-
$6,623 USD
ZAR 106,994 ZAR
View
Retailer 19
-
$8,491 USD
View
Price last confirmed 9 days ago
B
Retailer 20
-
$8,526 USD
£6,713 GBP
View
Most Expensive
NZ Jewellers
c6a6288c-2c3d-4345-81ca-3b631b6af0d9 · Sep 25
$9,369 USD
View
Price last confirmed 37 days ago
20 more retailers have this diamond
Prices start from $4,058 USDSave up to $4,468 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
$4,058 USD