Round|Natural|GIA

1.50ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6505156143

Certificate GIA 6505156143

Diamond specifications and retailer prices

From $12,484 CAD
$8,920 USD
As of October 25, 2026
Save $13,231 CAD (51%) vs most expensive(unlock to see where)
33 retailers carry this diamond
Most expensive: $25,715 CAD at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 1.5ct natural round diamond

This 1.5ct 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 6505156143. Listed at 33 retailers as of October 25, 2026, with prices from $12,484 to $25,715, a $13,231 spread on the same certified stone. Diamond Quarter lists it at $25,715. 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

1.50
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6505156143
Dimensions7.42 × 7.38 × 4.43 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.42 mm7.38 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6505156143
Side View
Table 60.0%Crown 32°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.0%

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 25
Current: $16,466 CAD|Low: $11,362 CAD|High: $23,781 CAD|Avg: $16,303 CAD|-0.9%
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
October 30, 2026
Retailer 20$12,484 CAD
Retailer 4$12,791 CAD
Retailer 18$13,634 CAD
Retailer 7$14,070 CAD
Retailer 2$14,268 CAD
Retailer 8$14,268 CAD
Retailer 9$15,249 CAD
Retailer 12$15,301 CAD
Retailer 11$15,457 CAD
Retailer 21$15,695 CAD
Retailer 17$15,715 CAD
Retailer 10$15,838 CAD
Retailer 5$15,906 CAD
Retailer 1$16,466 CAD
Retailer 13$17,008 CAD
Retailer 14$17,372 CAD
Retailer 15$17,782 CAD
Retailer 6$17,835 CAD
Retailer 19$20,556 CAD
Retailer 16$22,402 CAD
Retailer 3$23,781 CAD

31 data points across 21 retailers

33 retailers$12,484 CAD to $25,715 CAD

A
Cheapest Retailer
-
$12,484 CAD
$8,920 USD
B+
Retailer 2
-
$12,791 CAD
$9,139 USD
View
B+
Retailer 3
-
$12,988 CAD
$9,280 USD
View
B+
Retailer 4
-
$13,239 CAD
$9,459 USD
View
B+
Retailer 5
-
$13,600 CAD
$9,717 USD
View
B+
Retailer 6
-
$13,634 CAD
$9,742 USD
View
B+
Retailer 7
-
$14,070 CAD
View
B+
Retailer 8
-
$14,108 CAD
$10,080 USD
View
B+
Retailer 9
-
$14,268 CAD
$10,194 USD
View
Final sale: no returns
B+
Retailer 10
-
$14,268 CAD
$10,194 USD
View
B+
Retailer 11
-
$15,219 CAD
$10,874 USD
View
B+
Retailer 12
-
$15,249 CAD
$10,895 USD
View
B+
Retailer 13
-
$15,301 CAD
£8,608 GBP
View
B+
Retailer 14
-
$15,457 CAD
$11,044 USD
View
B+
Retailer 15
-
$15,695 CAD
$11,214 USD
View
B+
Retailer 16
-
$15,715 CAD
A$17,274 AUD
View
B+
Retailer 17
-
$15,838 CAD
$11,316 USD
View
B+
Retailer 18
-
$15,838 CAD
$11,316 USD
View
B+
Retailer 19
-
$15,906 CAD
$11,365 USD
View
Retailer 20
-
$15,943 CAD
$11,391 USD
View
Price last confirmed 7 days ago
B+
Retailer 21
-
$16,466 CAD
£9,264 GBP
View
B
Retailer 22
-
$16,711 CAD
$11,940 USD
View
B
Retailer 23
-
$16,711 CAD
$11,940 USD
View
B
Retailer 24
-
$17,005 CAD
$12,150 USD
View
B
Retailer 25
-
$17,008 CAD
$12,152 USD
View
B
Retailer 26
-
$17,257 CAD
$12,330 USD
View
B
Retailer 27
-
$17,372 CAD
$12,412 USD
View
B
Retailer 28
-
$17,782 CAD
€12,100 EUR
View
B
Retailer 29
-
$17,835 CAD
$12,743 USD
View
Retailer 30
-
$20,556 CAD
ZAR 237,269 ZAR
View
Price last confirmed 7 days ago
B
Retailer 31
-
$22,402 CAD
£12,603 GBP
View
B
Retailer 32
-
$23,781 CAD
$16,991 USD
View
Most Expensive
B
Diamond Quarter
1.5SI1D65439546KG · Oct 29
$25,715 CAD
£14,467 GBP
View
32 more retailers have this diamond
Prices start from $12,484 CADSave up to $13,231 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
1.50ct Round
$12,484 CAD