Radiant|Natural|GIA

1.50ct E SI1 Radiant Natural Diamond

EX • E/SI1

Diamond specifications and retailer prices

From $6,363 USD
As of October 29, 2026
Save $6,364 USD (50%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $12,727 USD at NZ Jewellers · As of October 30, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 11 retailers as of October 29, 2026, with prices from $6,363 to $12,727, a $6,364 spread on the same certified stone. NZ Jewellers lists it at $12,727. 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
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions7.31 × 5.64 × 4.02 mm
L/W Ratio1.30
Top View
7.31 mm5.64 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 71.0%CrownGirdle: ThickPavilionCulet: NDepth 71.3%

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 29
Current: $12,727 USD|Low: $6,363 USD|High: $13,015 USD|Avg: $7,685 USD|-2.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 4$6,363 USD
Retailer 7$6,605 USD
Retailer 9$6,815 USD
Retailer 5$6,894 USD
Retailer 3$7,000 USD
Retailer 2$7,141 USD
Retailer 10$7,142 USD
Retailer 8$7,602 USD
Retailer 6$7,954 USD
NZ Jewellers$12,727 USD

33 data points across 10 retailers

11 retailers$6,363 USD to $12,727 USD

A
Cheapest Retailer
-
$6,363 USD
A
Retailer 2
-
$6,605 USD
CA$9,174 CAD
View
B+
Retailer 3
-
$6,815 USD
View
B+
Retailer 4
-
$6,894 USD
View
B+
Retailer 5
-
$7,000 USD
View
B+
Retailer 6
-
$7,141 USD
£5,623 GBP
View
B+
Retailer 7
-
$7,142 USD
View
B+
Retailer 8
-
$7,602 USD
View
B+
Retailer 9
-
$7,954 USD
View
Retailer 10
-
$8,134 USD
View
Price last confirmed 50 days ago
Most Expensive
B
NZ Jewellers
f30f0d1a-9a4c-4b4d-acae-ba5bcd4f6711 · Oct 30
$12,727 USD
View
10 more retailers have this diamond
Prices start from $6,363 USDSave up to $6,364 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
$6,363 USD