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1.51ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 5181599972

Certificate GIA 5181599972

Diamond specifications and retailer prices

From $14,451 CAD
$10,345 USD
As of November 1, 2026
Save $15,234 CAD (51%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $29,684 CAD at Diamond Quarter · As of October 31, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5181599972. Listed at 20 retailers as of October 31, 2026, with prices from $14,451 to $29,684, a $15,234 spread on the same certified stone. Diamond Quarter lists it at $29,684. 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
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5181599972
Dimensions7.40 × 7.37 × 4.50 mm
L/W Ratio1.00
Top View
7.40 mm7.37 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5181599972
Side View
Table 59.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 60.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $17,534 CAD|Low: $13,603 CAD|High: $27,206 CAD|Avg: $18,619 CAD|-4.8%
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
November 2, 2026
Retailer 16$14,451 CAD
Retailer 13$14,888 CAD
Retailer 10$15,145 CAD
Retailer 3$15,497 CAD
Retailer 11$16,085 CAD
Retailer 6$16,324 CAD
Retailer 19$16,324 CAD
Retailer 1$17,534 CAD
Retailer 8$17,683 CAD
Retailer 15$17,760 CAD
Retailer 2$17,956 CAD
Retailer 7$18,893 CAD
Retailer 5$18,928 CAD
Retailer 17$18,928 CAD
Retailer 20$19,557 CAD
Retailer 18$19,621 CAD
Retailer 4$20,405 CAD
Retailer 14$23,982 CAD
Retailer 12$25,493 CAD
Retailer 9$27,206 CAD

44 data points across 20 retailers

20 retailers$14,451 CAD to $29,684 CAD

B+
Cheapest Retailer
-
$14,451 CAD
$10,345 USD
B+
Retailer 2
-
$14,888 CAD
$10,658 USD
View
B
Retailer 3
-
$15,145 CAD
$10,842 USD
View
B
Retailer 4
-
$15,497 CAD
View
B
Retailer 5
-
$16,085 CAD
$11,515 USD
View
B
Retailer 6
-
$16,324 CAD
$11,686 USD
View
B
Retailer 7
-
$16,324 CAD
$11,686 USD
View
Final sale: no returns
B
Retailer 8
-
$17,534 CAD
£9,883 GBP
View
B
Retailer 9
-
$17,683 CAD
$12,659 USD
View
Retailer 10
-
$17,760 CAD
A$19,560 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$17,956 CAD
$12,854 USD
View
B
Retailer 12
-
$18,893 CAD
$13,525 USD
View
B
Retailer 13
-
$18,928 CAD
$13,550 USD
View
B
Retailer 14
-
$18,928 CAD
$13,550 USD
View
B
Retailer 15
-
$19,557 CAD
$14,000 USD
View
B
Retailer 16
-
$20,405 CAD
$14,607 USD
View
B
Retailer 17
-
$23,982 CAD
ZAR 277,346 ZAR
View
B
Retailer 18
-
$25,493 CAD
£14,370 GBP
View
B
Retailer 19
-
$27,206 CAD
$19,476 USD
View
Most Expensive
B
Diamond Quarter
1.51SI1G517287D1N · Oct 31
$29,684 CAD
£16,732 GBP
View
19 more retailers have this diamond
Prices start from $14,451 CADSave up to $15,234 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 Round
$14,451 CAD