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Radiant|Natural|GIA

1.50ct H SI1 Radiant Natural Diamond

EX • H/SI1 • GIA 1545488189

Certificate GIA 1545488189

Diamond specifications and retailer prices

From $5,187 SGD
HK$31,700 HKD
As of November 1, 2026
Save $5,712 SGD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $11,977 SGD 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
Colour
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: $8,425 SGD|Low: $5,171 SGD|High: $11,175 SGD|Avg: $7,035 SGD
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 19$5,187 SGD
Retailer 7$5,247 SGD
Retailer 16$5,538 SGD
Retailer 14$5,798 SGD
Retailer 9$5,850 SGD
Retailer 3$5,875 SGD
Retailer 10$5,881 SGD
Retailer 17$6,136 SGD
Retailer 6$6,168 SGD
Retailer 18$6,200 SGD
Retailer 12$6,257 SGD
Retailer 5$6,604 SGD
Retailer 15$6,765 SGD
Retailer 11$7,081 SGD
Retailer 13$7,845 SGD
Retailer 1$8,425 SGD
Retailer 4$8,467 SGD
Retailer 8$10,855 SGD
Retailer 2$10,899 SGD

24 data points across 19 retailers

21 retailers$5,187 SGD to $10,899 SGD

A
Cheapest Retailer
-
$5,187 SGD
HK$31,700 HKD
A
Retailer 2
-
$5,247 SGD
$4,104 USD
View
A
Retailer 3
-
$5,538 SGD
$4,332 USD
View
A
Retailer 4
-
$5,798 SGD
$4,535 USD
View
Final sale: no returns
A
Retailer 5
-
$5,850 SGD
$4,576 USD
View
A
Retailer 6
-
$5,875 SGD
€4,377 EUR
View
A
Retailer 7
-
$5,881 SGD
$4,600 USD
View
A
Retailer 8
-
$6,136 SGD
A$7,384 AUD
View
A
Retailer 9
-
$6,168 SGD
$4,825 USD
View
A
Retailer 10
-
$6,200 SGD
$4,850 USD
View
A
Retailer 11
-
$6,257 SGD
$4,895 USD
View
A
Retailer 12
-
$6,604 SGD
$5,166 USD
View
A
Retailer 13
-
$6,765 SGD
£4,166 GBP
View
Retailer 14
-
$7,081 SGD
A$8,521 AUD
View
Price last confirmed 23 days ago
B+
Retailer 15
-
$7,111 SGD
A$8,558 AUD
View
B+
Retailer 16
-
$7,845 SGD
€5,844 EUR
View
B+
Retailer 17
-
$8,425 SGD
$6,590 USD
View
B+
Retailer 18
-
$8,467 SGD
ZAR 106,994 ZAR
View
Retailer 19
-
$10,855 SGD
$8,491 USD
View
Price last confirmed 9 days ago
B
Retailer 20
-
$10,899 SGD
£6,713 GBP
View
Most Expensive
NZ Jewellers
c6a6288c-2c3d-4345-81ca-3b631b6af0d9 · Sep 25
$11,977 SGD
$9,369 USD
View
Price last confirmed 37 days ago
20 more retailers have this diamond
Prices start from $5,187 SGDSave up to $5,712 SGD

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
$5,187 SGD