Radiant|Natural|GIA

1.50ct I SI1 Radiant Natural Diamond

ID • I/SI1 • GIA 7558456271

Certificate GIA 7558456271

Diamond specifications and retailer prices

From $4,019 USD
HK$31,400 HKD
As of October 28, 2026
Save $2,577 USD (39%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $9,059 USD 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
Color
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: $9,059 USD|Low: $4,019 USD|High: $9,059 USD|Avg: $5,747 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
October 27, 2026
Retailer 5$4,019 USD
Retailer 13$4,325 USD
Retailer 18$4,777 USD
Retailer 16$4,779 USD
Retailer 11$4,967 USD
Retailer 4$4,999 USD
Retailer 7$5,164 USD
Retailer 12$5,236 USD
Retailer 3$5,416 USD
Retailer 9$5,416 USD
Retailer 17$5,416 USD
Retailer 8$5,420 USD
Retailer 10$5,491 USD
Retailer 6$5,570 USD
Retailer 15$6,103 USD
Retailer 19$6,250 USD
Retailer 2$6,596 USD
Retailer 14$8,639 USD
NZ Jewellers$9,059 USD

36 data points across 19 retailers

21 retailers$4,019 USD to $6,596 USD

A
Cheapest Retailer
-
$4,019 USD
HK$31,400 HKD
A
Retailer 2
-
$4,325 USD
₹411,920 INR
View
A
Retailer 3
-
$4,777 USD
SGD 6,456 SGD
View
A
Retailer 4
-
$4,779 USD
View
A
Retailer 5
-
$4,967 USD
View
Retailer 6
-
$4,970 USD
View
Price last confirmed 5 days ago
Retailer 7
-
$5,164 USD
SGD 6,979 SGD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$5,236 USD
£4,123 GBP
View
B+
Retailer 9
-
$5,387 USD
A$8,288 AUD
View
Retailer 10
-
$5,416 USD
View
Price last confirmed 15 days ago
Retailer 11
-
$5,416 USD
View
Price last confirmed 14 days ago
Retailer 12
-
$5,416 USD
View
Price last confirmed 16 days ago
Retailer 13
-
$5,420 USD
View
Price last confirmed 7 days ago
Retailer 14
-
$5,491 USD
A$8,448 AUD
View
Price last confirmed 22 days ago
Retailer 15
-
$5,570 USD
View
Price last confirmed 7 days ago
Retailer 16
-
$6,103 USD
€5,812 EUR
View
Price last confirmed 7 days ago
Retailer 17
-
$6,250 USD
View
Price last confirmed 13 days ago
Retailer 18
-
$6,497 USD
View
Price last confirmed 61 days ago
B+
Retailer 19
-
$6,596 USD
ZAR 106,555 ZAR
View
Retailer 20
-
$8,639 USD
£6,802 GBP
View
Price last confirmed 7 days ago
Most Expensive
NZ Jewellers
04619716-9181-434f-a451-93f06eba5630 · Oct 17
$9,059 USD
View
Price last confirmed 14 days ago
20 more retailers have this diamond
Prices start from $4,019 USDSave up to $2,577 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
$4,019 USD