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Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

GD • E/SI1 • GIA 1549544742

Certificate GIA 1549544742

Diamond specifications and retailer prices

From $6,114 CAD
₹416,833 INR
As of October 29, 2026
Save $1,610 CAD (21%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $7,723 CAD at Blue Nile · As of October 29, 2026
View at Blue Nile

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1549544742. Listed at 7 retailers as of October 29, 2026, with prices from $6,114 to $7,723, a $1,610 spread on the same certified stone. Blue Nile lists it at $7,723. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
E
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1549544742
Dimensions6.90 × 5.63 × 4.06 mm
L/W Ratio1.23
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
6.90 mm5.63 mm1.51 ctE / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1549544742
Side View
Table 68.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 72.1%

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: $7,723 CAD|Low: $6,072 CAD|High: $8,876 CAD|Avg: $7,433 CAD|-10.5%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 2$6,114 CAD
Retailer 3$6,518 CAD
Retailer 5$6,864 CAD
Retailer 4$7,042 CAD
Retailer 6$7,652 CAD
Blue Nile$7,723 CAD
Retailer 7$8,876 CAD

45 data points across 7 retailers

7 retailers$6,114 CAD to $7,723 CAD

A
Cheapest Retailer
-
$6,114 CAD
₹416,833 INR
A
Retailer 2
-
$6,518 CAD
$4,666 USD
View
A
Retailer 3
-
$6,864 CAD
MYR 20,016 MYR
View
A
Retailer 4
-
$7,042 CAD
SGD 6,812 SGD
View
B+
Retailer 5
-
$7,614 CAD
A$8,386 AUD
View
B+
Retailer 6
-
$7,652 CAD
A$8,428 AUD
View
Most Expensive
B+
Blue Nile
28033809 · Oct 29
$7,723 CAD
$5,529 USD
View
6 more retailers have this diamond
Prices start from $6,114 CADSave up to $1,610 CAD

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
1.51ct Radiant
$6,114 CAD