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Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 2377479568

Certificate GIA 2377479568

Diamond specifications and retailer prices

From $15,583 CAD
$11,134 USD
As of October 29, 2026
Save $5,092 CAD (25%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $20,675 CAD at 77 Diamonds · As of October 27, 2026
View at 77 Diamonds

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2377479568. Listed at 4 retailers as of October 27, 2026, with prices from $15,583 to $20,675, a $5,092 spread on the same certified stone. 77 Diamonds lists it at $20,675. 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2377479568
Dimensions7.38 × 5.60 × 3.86 mm
L/W Ratio1.32
Top View
7.38 mm5.60 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2377479568
Side View
Table 65.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 29
Current: $20,675 CAD|Low: $15,440 CAD|High: $20,905 CAD|Avg: $18,128 CAD|+1.1%
77 Diamonds
Retailer 2
October 27, 2026
Retailer 2$15,583 CAD
77 Diamonds$20,675 CAD

28 data points across 2 retailers

4 retailers$15,583 CAD to $20,675 CAD

B+
Cheapest Retailer
-
$15,583 CAD
$11,134 USD
B
Retailer 2
-
$16,588 CAD
$11,852 USD
View
B
Retailer 3
-
$16,997 CAD
A$18,684 AUD
View
Most Expensive
B
77 Diamonds
RADZZPMFDKAY · Oct 27
$20,675 CAD
£11,631 GBP
View
3 more retailers have this diamond
Prices start from $15,583 CADSave up to $5,092 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.

B+
1.51ct Radiant
$15,583 CAD