Marquise|Natural|GIA

1.51ct D SI1 Marquise Natural Diamond

ID • D/SI1 • GIA 5553731926

Certificate GIA 5553731926

Diamond specifications and retailer prices

From $12,512 CAD
$8,957 USD
As of October 31, 2026
Save $7,658 CAD (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $20,170 CAD at NZ Jewellers · As of October 30, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5553731926. Listed at 9 retailers as of October 30, 2026, with prices from $12,512 to $20,170, a $7,658 spread on the same certified stone. NZ Jewellers lists it at $20,170. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553731926
Dimensions10.94 × 5.98 × 3.80 mm
L/W Ratio1.83
Top View
10.94 mm5.98 mm1.51 ctD / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553731926
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.4%

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 31
Current: $20,170 CAD|Low: $12,512 CAD|High: $20,339 CAD|Avg: $14,694 CAD|-0.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 4$12,512 CAD
Retailer 5$12,544 CAD
Retailer 6$12,642 CAD
Retailer 9$13,405 CAD
Retailer 3$13,540 CAD
Retailer 8$14,472 CAD
Retailer 7$14,694 CAD
Retailer 2$18,901 CAD
NZ Jewellers$20,170 CAD

17 data points across 9 retailers

9 retailers$12,512 CAD to $20,170 CAD

A
Cheapest Retailer
-
$12,512 CAD
$8,957 USD
A
Retailer 2
-
$12,544 CAD
$8,980 USD
View
A
Retailer 3
-
$12,642 CAD
$9,050 USD
View
Retailer 4
-
$13,405 CAD
A$14,764 AUD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$13,540 CAD
£7,632 GBP
View
B+
Retailer 6
-
$14,472 CAD
$10,360 USD
View
B+
Retailer 7
-
$14,694 CAD
$10,519 USD
View
B+
Retailer 8
-
$18,901 CAD
£10,654 GBP
View
Most Expensive
B
NZ Jewellers
5382c10c-e26f-43bf-a2f9-6991835ace68 · Oct 30
$20,170 CAD
$14,439 USD
View
8 more retailers have this diamond
Prices start from $12,512 CADSave up to $7,658 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
$12,512 CAD