Round|Natural|GIA

1.50ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1234

Certificate GIA 1234

Diamond specifications and retailer prices

From $5,558 USD
As of November 5, 2026
Save $1,406 USD (20%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $6,964 USD at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.5ct natural round diamond

This 1.5ct natural round 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 and certified by GIA. Listed at 5 retailers as of November 5, 2026, with prices from $5,558 to $6,964, a $1,406 spread on the same certified stone. Blue Nile lists it at $6,964. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1234
Dimensions7.28 × 7.33 × 4.57 mm
L/W Ratio1.01
Top View
7.28 mm7.33 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1234
Side View
Table 54.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: $6,964 USD|Low: $4,489 USD|High: $7,710 USD|Avg: $6,324 USD|-7.4%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7$4,489 USD
Retailer 4$5,558 USD
Retailer 3$5,815 USD
Retailer 5$6,070 USD
Retailer 2$6,166 USD
Blue Nile$6,964 USD
Retailer 6$7,710 USD

40 data points across 7 retailers

5 retailers$5,558 USD to $6,964 USD

A
Cheapest Retailer
-
$5,558 USD
A
Retailer 2
-
$5,815 USD
View
A
Retailer 3
-
$6,070 USD
View
A
Retailer 4
-
$6,166 USD
View
Most Expensive
A
Blue Nile
30153722 · Nov 5
$6,964 USD
View
4 more retailers have this diamond
Prices start from $5,558 USDSave up to $1,406 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 Round
$5,558 USD