Marquise|Natural|GIA

1.51ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 1445475696

Certificate GIA 1445475696

Diamond specifications and retailer prices

From $5,778 CAD
As of November 6, 2026
Save $7,124 CAD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $12,903 CAD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1445475696. Listed at 16 retailers as of November 5, 2026, with prices from $5,778 to $12,903, a $7,124 spread on the same certified stone. NZ Jewellers lists it at $12,903. 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
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1445475696
Dimensions12.03 × 6.11 × 3.49 mm
L/W Ratio1.97
Key to symbols
Feather
Top View
12.03 mm6.11 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1445475696
Side View
Table 58.0%CrownGirdle: ThickPavilionCulet: NoneDepth 57.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $12,903 CAD|Low: $5,725 CAD|High: $12,903 CAD|Avg: $8,147 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
Retailer 13
November 6, 2026
Retailer 10$5,778 CAD
Retailer 2$6,131 CAD
Retailer 4$6,792 CAD
Retailer 12$7,349 CAD
Retailer 6$7,485 CAD
Retailer 8$7,525 CAD
Retailer 11$7,715 CAD
Retailer 13$7,715 CAD
Retailer 3$8,146 CAD
Retailer 7$8,682 CAD
Retailer 5$8,901 CAD
Retailer 9$12,287 CAD
NZ Jewellers$12,903 CAD

31 data points across 13 retailers

16 retailers$5,778 CAD to $12,903 CAD

A
Cheapest Retailer
-
$5,778 CAD
A
Retailer 2
-
$6,131 CAD
View
B+
Retailer 3
-
$6,792 CAD
View
B+
Retailer 4
-
$6,800 CAD
View
Retailer 5
-
$7,172 CAD
View
Price last confirmed 89 days ago
B+
Retailer 6
-
$7,272 CAD
View
Retailer 7
-
$7,349 CAD
View
Price last confirmed 10 days ago
B+
Retailer 8
-
$7,485 CAD
View
B+
Retailer 9
-
$7,525 CAD
View
B+
Retailer 10
-
$7,715 CAD
View
B+
Retailer 11
-
$7,715 CAD
View
B+
Retailer 12
-
$8,146 CAD
View
B
Retailer 13
-
$8,682 CAD
View
B
Retailer 14
-
$8,901 CAD
View
B
Retailer 15
-
$12,287 CAD
View
Most Expensive
B
NZ Jewellers
65f84ebf-99d5-4b50-bf6a-d5555edcd2fd · Nov 5
$12,903 CAD
$9,173 USD
View
15 more retailers have this diamond
Prices start from $5,778 CADSave up to $7,124 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 Marquise
$5,778 CAD