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Round|Natural|GIA

1.51ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6421142723

Certificate GIA 6421142723

Diamond specifications and retailer prices

From $12,926 CAD
As of November 4, 2026
Save $11,470 CAD (47%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $24,396 CAD at NZ Jewellers · As of November 5, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6421142723. Listed at 18 retailers as of November 4, 2026, with prices from $12,926 to $24,396, a $11,470 spread on the same certified stone. NZ Jewellers lists it at $24,396. 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
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6421142723
Dimensions7.45 × 7.43 × 4.49 mm
L/W Ratio1.00
Top View
7.45 mm7.43 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6421142723
Side View
Table 59.0%CrownGirdle: MediumPavilionCulet: NoneDepth 60.4%

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 4
Current: $24,396 CAD|Low: $12,198 CAD|High: $24,396 CAD|Avg: $17,758 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 7$12,926 CAD
Retailer 8$14,638 CAD
Retailer 10$14,638 CAD
Retailer 2$15,550 CAD
Retailer 12$15,857 CAD
Retailer 9$16,101 CAD
Retailer 5$17,540 CAD
Retailer 11$18,297 CAD
Retailer 3$19,256 CAD
Retailer 4$20,867 CAD
Retailer 6$22,798 CAD
NZ Jewellers$24,396 CAD

41 data points across 12 retailers

18 retailers$12,926 CAD to $24,396 CAD

B+
Cheapest Retailer
-
$12,926 CAD
B
Retailer 2
-
$13,329 CAD
View
B
Retailer 3
-
$13,581 CAD
View
B
Retailer 4
-
$13,988 CAD
View
Retailer 5
-
$14,638 CAD
View
Price last confirmed 8 days ago
B
Retailer 6
-
$14,638 CAD
View
Final sale: no returns
B
Retailer 7
-
$15,550 CAD
View
B
Retailer 8
-
$15,857 CAD
View
B
Retailer 9
-
$16,101 CAD
View
B
Retailer 10
-
$16,910 CAD
View
B
Retailer 11
-
$17,108 CAD
View
B
Retailer 12
-
$17,108 CAD
View
B
Retailer 13
-
$17,540 CAD
View
B
Retailer 14
-
$17,681 CAD
View
B
Retailer 15
-
$18,297 CAD
View
Retailer 16
-
$19,256 CAD
View
Price last confirmed 14 days ago
B
Retailer 17
-
$22,798 CAD
View
Most Expensive
B
NZ Jewellers
647ee53a-c6df-43c7-89e3-127918a6fd9a · Nov 5
$24,396 CAD
$17,468 USD
View
17 more retailers have this diamond
Prices start from $12,926 CADSave up to $11,470 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
$12,926 CAD