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Radiant|Natural|GIA

1.50ct I SI1 Radiant Natural Diamond

ID • I/SI1 • GIA 7558456271

Certificate GIA 7558456271

Diamond specifications and retailer prices

From $5,138 SGD
HK$31,400 HKD
As of October 28, 2026
Save $3,294 SGD (39%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $11,581 SGD at NZ Jewellers · As of October 17, 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 7558456271. Listed at 21 retailers as of October 27, 2026, with a 64% 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
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7558456271
Dimensions7.81 × 5.83 × 3.94 mm
L/W Ratio1.34
Girdle conditionPolished
Culet sizeNone
Key to symbols
Feather, Crystal, Indented Natural, Needle, Natural
Top View
7.81 mm5.83 mm1.50 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7558456271
Side View
Table 67.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.6%

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: Oct 28
Current: $11,581 SGD|Low: $5,138 SGD|High: $11,581 SGD|Avg: $7,348 SGD
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
October 27, 2026
Retailer 5$5,138 SGD
Retailer 13$5,529 SGD
Retailer 18$6,107 SGD
Retailer 16$6,109 SGD
Retailer 11$6,350 SGD
Retailer 4$6,391 SGD
Retailer 7$6,602 SGD
Retailer 12$6,693 SGD
Retailer 3$6,924 SGD
Retailer 9$6,924 SGD
Retailer 17$6,924 SGD
Retailer 8$6,929 SGD
Retailer 10$7,020 SGD
Retailer 6$7,121 SGD
Retailer 15$7,802 SGD
Retailer 19$7,990 SGD
Retailer 2$8,432 SGD
Retailer 14$11,044 SGD
NZ Jewellers$11,581 SGD

36 data points across 19 retailers

21 retailers$5,138 SGD to $8,432 SGD

A
Cheapest Retailer
-
$5,138 SGD
HK$31,400 HKD
Retailer 2
-
$5,529 SGD
₹411,920 INR
View
Price last confirmed 7 days ago
A
Retailer 3
-
$6,107 SGD
View
A
Retailer 4
-
$6,109 SGD
$4,779 USD
View
A
Retailer 5
-
$6,350 SGD
$4,967 USD
View
Retailer 6
-
$6,354 SGD
$4,970 USD
View
Price last confirmed 6 days ago
Retailer 7
-
$6,602 SGD
View
Price last confirmed 9 days ago
Retailer 8
-
$6,693 SGD
£4,123 GBP
View
Price last confirmed 7 days ago
B+
Retailer 9
-
$6,887 SGD
A$8,288 AUD
View
Retailer 10
-
$6,924 SGD
$5,416 USD
View
Price last confirmed 16 days ago
Retailer 11
-
$6,924 SGD
$5,416 USD
View
Price last confirmed 15 days ago
Retailer 12
-
$6,924 SGD
$5,416 USD
View
Price last confirmed 17 days ago
Retailer 13
-
$6,929 SGD
$5,420 USD
View
Price last confirmed 8 days ago
Retailer 14
-
$7,020 SGD
A$8,448 AUD
View
Price last confirmed 23 days ago
Retailer 15
-
$7,121 SGD
$5,570 USD
View
Price last confirmed 8 days ago
Retailer 16
-
$7,802 SGD
€5,812 EUR
View
Price last confirmed 8 days ago
Retailer 17
-
$7,990 SGD
$6,250 USD
View
Price last confirmed 14 days ago
Retailer 18
-
$8,306 SGD
$6,497 USD
View
Price last confirmed 62 days ago
B+
Retailer 19
-
$8,432 SGD
ZAR 106,555 ZAR
View
Retailer 20
-
$11,044 SGD
£6,802 GBP
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
04619716-9181-434f-a451-93f06eba5630 · Oct 17
$11,581 SGD
$9,059 USD
View
Price last confirmed 15 days ago
20 more retailers have this diamond
Prices start from $5,138 SGDSave up to $3,294 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
$5,138 SGD