Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1543994919

Certificate GIA 1543994919

Diamond specifications and retailer prices

From $10,308 CAD
$7,365 USD
As of October 27, 2026
Save $8,741 CAD (46%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $23,593 CAD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

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 1543994919. Listed at 19 retailers as of October 27, 2026, with a 85% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1543994919
Dimensions7.28 × 7.31 × 4.57 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.28 mm7.31 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1543994919
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.7%

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 27
Current: $12,570 CAD|Low: $9,358 CAD|High: $19,151 CAD|Avg: $12,962 CAD|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 29, 2026
Retailer 15$10,308 CAD
Retailer 4$10,645 CAD
Retailer 10$10,814 CAD
Retailer 16$10,949 CAD
Retailer 3$11,316 CAD
Retailer 5$11,369 CAD
Retailer 2$12,117 CAD
Retailer 7$12,525 CAD
Retailer 12$12,560 CAD
Retailer 1$12,570 CAD
Retailer 9$12,616 CAD
Retailer 6$12,723 CAD
Retailer 14$13,779 CAD
Retailer 8$15,151 CAD
Retailer 13$16,407 CAD
Retailer 11$19,049 CAD

33 data points across 16 retailers

19 retailers$10,308 CAD to $19,049 CAD

A
Cheapest Retailer
-
$10,308 CAD
$7,365 USD
A
Retailer 2
-
$10,645 CAD
$7,606 USD
View
A
Retailer 3
-
$10,814 CAD
$7,727 USD
View
A
Retailer 4
-
$10,949 CAD
$7,823 USD
View
A
Retailer 5
-
$11,316 CAD
$8,085 USD
View
B+
Retailer 6
-
$11,369 CAD
$8,123 USD
View
Final sale: no returns
B+
Retailer 7
-
$12,117 CAD
$8,657 USD
View
B+
Retailer 8
-
$12,525 CAD
$8,949 USD
View
B+
Retailer 9
-
$12,560 CAD
A$13,807 AUD
View
B+
Retailer 10
-
$12,570 CAD
£7,072 GBP
View
B+
Retailer 11
-
$12,616 CAD
$9,014 USD
View
B+
Retailer 12
-
$12,723 CAD
$9,091 USD
View
B+
Retailer 13
-
$12,780 CAD
$9,131 USD
View
Price last confirmed 30 days ago
B+
Retailer 14
-
$13,779 CAD
$9,845 USD
View
B
Retailer 15
-
$14,746 CAD
$10,536 USD
View
Price last confirmed 59 days ago
B
Retailer 16
-
$14,746 CAD
$10,536 USD
View
Price last confirmed 31 days ago
B+
Retailer 17
-
$16,407 CAD
ZAR 189,383 ZAR
View
Price last confirmed 7 days ago
B
Retailer 18
-
$19,049 CAD
£10,717 GBP
View
Most Expensive
B
NZ Jewellers
5239c466-c2e3-4e18-a2db-1163951c3b6d · Sep 28
$23,593 CAD
$16,857 USD
View
Price last confirmed 31 days ago
18 more retailers have this diamond
Prices start from $10,308 CADSave up to $8,741 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
$10,308 CAD