CaratHunter
Plans
Round|Natural|GIA

1.51ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 3415658160

Certificate GIA 3415658160

Diamond specifications and retailer prices

From $10,791 CAD
$7,710 USD
As of October 29, 2026
Save $17,797 CAD (62%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $28,588 CAD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3415658160. Listed at 27 retailers as of October 29, 2026, with prices from $10,791 to $28,588, a $17,797 spread on the same certified stone. Diamond Quarter lists it at $28,588. 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
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 3415658160
Dimensions7.34 × 7.30 × 4.59 mm
L/W Ratio1.01
Top View
7.34 mm7.30 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3415658160
Side View
Table 55.0%Crown 33.5°Girdle: ThickPavilion 41.4°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 29
Current: $12,972 CAD|Low: $10,791 CAD|High: $22,980 CAD|Avg: $15,823 CAD|-13.4%
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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
October 30, 2026
Retailer 5$10,791 CAD
Retailer 7$10,848 CAD
Retailer 3$11,191 CAD
Retailer 21$11,382 CAD
Retailer 8$11,524 CAD
Retailer 19$11,876 CAD
Retailer 6$11,953 CAD
Retailer 4$12,742 CAD
Retailer 1$12,972 CAD
Retailer 12$13,279 CAD
Retailer 22$13,378 CAD
Retailer 9$13,870 CAD
Retailer 23$13,870 CAD
Retailer 2$14,332 CAD
Retailer 20$14,502 CAD
Retailer 18$14,877 CAD
Retailer 15$14,937 CAD
Retailer 13$15,167 CAD
Retailer 11$15,324 CAD
Retailer 14$17,235 CAD
Retailer 17$18,769 CAD
Retailer 10$20,013 CAD
Retailer 16$22,980 CAD

42 data points across 23 retailers

27 retailers$10,791 CAD to $28,588 CAD

A
Cheapest Retailer
-
$10,791 CAD
$7,710 USD
A
Retailer 2
-
$10,848 CAD
$7,751 USD
View
A
Retailer 3
-
$11,191 CAD
$7,996 USD
View
A
Retailer 4
-
$11,382 CAD
$8,132 USD
View
A
Retailer 5
-
$11,524 CAD
$8,234 USD
View
A
Retailer 6
-
$11,876 CAD
$8,485 USD
View
B+
Retailer 7
-
$11,953 CAD
$8,540 USD
View
Final sale: no returns
B+
Retailer 8
-
$12,742 CAD
$9,104 USD
View
B+
Retailer 9
-
$12,972 CAD
£7,298 GBP
View
B+
Retailer 10
-
$13,279 CAD
$9,488 USD
View
B+
Retailer 11
-
$13,378 CAD
$9,558 USD
View
Retailer 12
-
$13,787 CAD
$9,851 USD
View
Price last confirmed 14 days ago
B+
Retailer 13
-
$13,870 CAD
$9,910 USD
View
B+
Retailer 14
-
$13,870 CAD
$9,910 USD
View
B+
Retailer 15
-
$14,332 CAD
$10,240 USD
View
B+
Retailer 16
-
$14,502 CAD
$10,362 USD
View
B+
Retailer 17
-
$14,877 CAD
€10,123 EUR
View
Retailer 18
-
$14,937 CAD
$10,672 USD
View
Price last confirmed 8 days ago
Retailer 19
-
$15,167 CAD
$10,837 USD
View
Price last confirmed 7 days ago
Retailer 20
-
$15,324 CAD
A$16,844 AUD
View
Price last confirmed 26 days ago
Retailer 21
-
$15,362 CAD
$10,976 USD
View
Price last confirmed 15 days ago
Retailer 22
-
$17,235 CAD
$12,314 USD
View
Price last confirmed 9 days ago
B
Retailer 23
-
$18,769 CAD
£10,559 GBP
View
Retailer 24
-
$20,013 CAD
ZAR 231,006 ZAR
View
Price last confirmed 12 days ago
Retailer 25
-
$22,980 CAD
$16,419 USD
View
Price last confirmed 9 days ago
B
Retailer 26
-
$27,272 CAD
£15,343 GBP
View
Most Expensive
B
Diamond Quarter
1.51SI1D34607BA3N · Oct 29
$28,588 CAD
£16,083 GBP
View
26 more retailers have this diamond
Prices start from $10,791 CADSave up to $17,797 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
$10,791 CAD