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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 $5,610 SGD
₹416,833 INR
As of October 29, 2026
Save $1,477 SGD (21%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $7,087 SGD 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 $5,610 to $7,087, a $1,477 spread on the same certified stone. Blue Nile lists it at $7,087. 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
Colour
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: $7,087 SGD|Low: $5,572 SGD|High: $8,144 SGD|Avg: $6,820 SGD|-10.5%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 2$5,610 SGD
Retailer 3$5,980 SGD
Retailer 5$6,298 SGD
Retailer 4$6,461 SGD
Retailer 6$7,021 SGD
Blue Nile$7,087 SGD
Retailer 7$8,144 SGD

45 data points across 7 retailers

7 retailers$5,610 SGD to $7,087 SGD

A
Cheapest Retailer
-
$5,610 SGD
₹416,833 INR
A
Retailer 2
-
$5,980 SGD
$4,666 USD
View
A
Retailer 3
-
$6,298 SGD
MYR 20,016 MYR
View
A
Retailer 4
-
$6,461 SGD
View
B+
Retailer 5
-
$6,986 SGD
A$8,386 AUD
View
B+
Retailer 6
-
$7,021 SGD
A$8,428 AUD
View
Most Expensive
B+
Blue Nile
28033809 · Oct 29
$7,087 SGD
$5,529 USD
View
6 more retailers have this diamond
Prices start from $5,610 SGDSave up to $1,477 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
1.51ct Radiant
$5,610 SGD