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Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1555561780

Certificate GIA 1555561780

Diamond specifications and retailer prices

From $8,055 CAD
HK$44,800 HKD
As of October 22, 2026
Save $1,362 CAD (14%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $12,047 CAD at Yorxs · As of October 21, 2026
View at Yorxs

About this 1.51ct natural round diamond

This 1.51ct 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 1555561780. Listed at 7 retailers as of October 22, 2026, with a relatively tight 17% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555561780
Dimensions7.24 × 7.29 × 4.56 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Needle
Top View
7.24 mm7.29 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555561780
Side View
Table 58.0%CrownGirdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

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 22
Current: $9,169 CAD|Low: $8,055 CAD|High: $16,150 CAD|Avg: $10,697 CAD|-18.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Yorxs
October 22, 2026
Retailer 4$8,055 CAD
Retailer 1$9,169 CAD
Retailer 5$9,390 CAD
Retailer 2$9,417 CAD
Yorxs$12,047 CAD
Retailer 3$15,499 CAD

26 data points across 6 retailers

7 retailers$8,055 CAD to $9,417 CAD

A
Cheapest Retailer
-
$8,055 CAD
HK$44,800 HKD
A
Retailer 2
-
$9,169 CAD
€6,217 EUR
View
Price last confirmed 6 days ago
A
Retailer 3
-
$9,390 CAD
SGD 9,033 SGD
View
Price last confirmed 21 days ago
A
Retailer 4
-
$9,417 CAD
$6,704 USD
View
A
Retailer 5
-
$11,191 CAD
$7,967 USD
View
Price last confirmed 22 days ago
B+
Retailer 6
-
$11,495 CAD
$8,183 USD
View
Price last confirmed 29 days ago
Most Expensive
B+
Yorxs
620886881 · Oct 19
$12,047 CAD
€8,168 EUR
View
Price last confirmed 8 days ago
6 more retailers have this diamond
Prices start from $8,055 CADSave up to $1,362 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.

A
1.51ct Round
$8,055 CAD