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Marquise|Natural|GIA

1.51ct F SI1 Marquise Natural Diamond

ID • F/SI1 • GIA 6555004556

Certificate GIA 6555004556

Diamond specifications and retailer prices

From $12,412 CAD
$8,882 USD
As of November 2, 2026
Save $7,591 CAD (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $20,002 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 F 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 6555004556. Listed at 9 retailers as of October 30, 2026, with prices from $12,412 to $20,002, a $7,591 spread on the same certified stone. NZ Jewellers lists it at $20,002. 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
F
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle37.35°
Pavilion angle41.16°
OriginNatural
Grading LabGIA
CertificateGIA 6555004556
Dimensions11.20 × 5.96 × 3.80 mm
L/W Ratio1.88
Top View
11.20 mm5.96 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555004556
Side View
Table 61.0%Crown 37.35°Girdle: ThickPavilion 41.16°Culet: NoneDepth 63.8%

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 2
Current: $20,002 CAD|Low: $12,412 CAD|High: $20,002 CAD|Avg: $15,192 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 2, 2026
Retailer 9$12,412 CAD
Retailer 10$13,122 CAD
Retailer 7$13,179 CAD
Retailer 2$13,427 CAD
Retailer 13$14,016 CAD
Retailer 12$14,351 CAD
Retailer 11$14,360 CAD
Retailer 8$14,572 CAD
Retailer 3$14,767 CAD
Retailer 5$16,801 CAD
Retailer 4$16,896 CAD
Retailer 6$18,743 CAD
NZ Jewellers$20,002 CAD

21 data points across 13 retailers

9 retailers$12,412 CAD to $20,002 CAD

B+
Cheapest Retailer
-
$12,412 CAD
$8,882 USD
B+
Retailer 2
-
$13,122 CAD
$9,390 USD
View
Retailer 3
-
$13,179 CAD
A$14,510 AUD
View
Price last confirmed 9 days ago
B+
Retailer 4
-
$13,427 CAD
£7,566 GBP
View
B+
Retailer 5
-
$14,351 CAD
$10,270 USD
View
B+
Retailer 6
-
$14,360 CAD
$10,276 USD
View
B+
Retailer 7
-
$14,572 CAD
$10,428 USD
View
B
Retailer 8
-
$18,743 CAD
£10,561 GBP
View
Most Expensive
B
NZ Jewellers
45b6177d-5acf-4cbc-812e-31be09da4409 · Oct 30
$20,002 CAD
$14,314 USD
View
8 more retailers have this diamond
Prices start from $12,412 CADSave up to $7,591 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 Marquise
$12,412 CAD