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20.58ct L SI2 Round Natural Diamond

EX • L/SI2 • GIA 2235012378

Certificate GIA 2235012378

Diamond specifications and retailer prices

From $496,675 CAD
$355,555 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: $496,675 CAD at Blue Nile
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Blue Nile

About this 20.58ct natural round diamond

This 20.58ct natural round sits in the over five carat band, graded L colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2235012378. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

20.58
Carat
L
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2235012378
Dimensions17.59 × 17.55 × 10.71 mm
L/W Ratio1.00
Top View
17.59 mm17.55 mm20.58 ctL / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2235012378
Side View
Table 60.0%CrownGirdle: Sli. ThickPavilionCulet: NoneDepth 61.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $496,675 CAD|Low: $437,403 CAD|High: $595,915 CAD|Avg: $496,406 CAD
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 9, 2026
Retailer 4$437,403 CAD
Retailer 3$481,194 CAD
Retailer 5$484,784 CAD
Blue Nile$496,675 CAD
Retailer 2$593,071 CAD

13 data points across 5 retailers

1 retailer

B
Blue Nile
20051526 · Oct 29
$496,675 CAD
$355,555 USD
View

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.

B
20.58ct Round
$496,675 CAD