Radiant|Natural|GIA

1.50ct I SI2 Radiant Natural Diamond

EX • I/SI2 • GIA 7551478920

Certificate GIA 7551478920

Diamond specifications and retailer prices

From $5,130 USD
As of November 1, 2026
Save $4,434 USD (46%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $10,858 USD at NZ Jewellers · As of September 20, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7551478920. Listed at 23 retailers as of November 1, 2026, with a 86% 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7551478920
Dimensions7.54 × 5.73 × 3.92 mm
L/W Ratio1.32
Culet sizeNone
Top View
7.54 mm5.73 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7551478920
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.5%

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: $6,182 USD|Low: $4,865 USD|High: $9,789 USD|Avg: $6,747 USD
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
November 6, 2026
Retailer 3$5,130 USD
Retailer 2$5,474 USD
Retailer 5$5,803 USD
Retailer 12$5,816 USD
Retailer 16$5,882 USD
Retailer 15$5,953 USD
Retailer 1$6,182 USD
Retailer 9$6,227 USD
Retailer 6$6,560 USD
Retailer 8$6,560 USD
Retailer 13$6,640 USD
Retailer 4$6,780 USD
Retailer 11$7,091 USD
Retailer 7$7,159 USD
Retailer 14$9,504 USD
Retailer 10$9,564 USD

32 data points across 16 retailers

23 retailers$5,130 USD to $9,564 USD

A
Cheapest Retailer
-
$5,130 USD
B+
Retailer 2
-
$5,474 USD
View
B+
Retailer 3
-
$5,803 USD
View
B+
Retailer 4
-
$5,816 USD
View
Retailer 5
-
$5,882 USD
View
Price last confirmed 46 days ago
Retailer 6
-
$5,882 USD
View
Price last confirmed 38 days ago
Retailer 7
-
$5,882 USD
View
Price last confirmed 37 days ago
B+
Retailer 8
-
$5,953 USD
View
B+
Retailer 9
-
$6,182 USD
View
B+
Retailer 10
-
$6,227 USD
View
B+
Retailer 11
-
$6,560 USD
View
B+
Retailer 12
-
$6,560 USD
View
B+
Retailer 13
-
$6,640 USD
View
B
Retailer 14
-
$6,780 USD
View
Retailer 15
-
$6,786 USD
View
Price last confirmed 62 days ago
Retailer 16
-
$6,786 USD
View
Price last confirmed 39 days ago
Retailer 17
-
$6,786 USD
View
Price last confirmed 46 days ago
B
Retailer 18
-
$7,091 USD
View
Retailer 19
-
$7,159 USD
View
Price last confirmed 15 days ago
Retailer 20
-
$9,504 USD
View
Price last confirmed 11 days ago
B
Retailer 21
-
$9,564 USD
View
Retailer 22
-
$10,858 USD
View
Price last confirmed 38 days ago
Most Expensive
NZ Jewellers
ce6e203c-c250-486e-8e7a-41ef796e6950 · Sep 20
$10,858 USD
View
Price last confirmed 47 days ago
22 more retailers have this diamond
Prices start from $5,130 USDSave up to $4,434 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
$5,130 USD