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Round|Natural|GIA

1.50ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1234

Certificate GIA 1234

Diamond specifications and retailer prices

From $7,940 AUD
As of November 5, 2026
Save $2,008 AUD (20%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $9,948 AUD 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 $7,940 to $9,948, a $2,008 spread on the same certified stone. Blue Nile lists it at $9,948. 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
Colour
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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $9,948 AUD|Low: $6,413 AUD|High: $11,014 AUD|Avg: $9,033 AUD|-7.4%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7$6,413 AUD
Retailer 4$7,940 AUD
Retailer 3$8,307 AUD
Retailer 5$8,671 AUD
Retailer 2$8,808 AUD
Blue Nile$9,948 AUD
Retailer 6$11,014 AUD

40 data points across 7 retailers

5 retailers$7,940 AUD to $9,948 AUD

A
Cheapest Retailer
-
$7,940 AUD
A
Retailer 2
-
$8,307 AUD
View
A
Retailer 3
-
$8,671 AUD
View
A
Retailer 4
-
$8,808 AUD
View
Most Expensive
A
Blue Nile
30153722 · Nov 5
$9,948 AUD
$6,964 USD
View
4 more retailers have this diamond
Prices start from $7,940 AUDSave up to $2,008 AUD

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
$7,940 AUD