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Marquise|Natural|GIA

1.51ct F SI1 Marquise Natural Diamond

ID • F/SI1 • GIA 6541995939

Certificate GIA 6541995939

Diamond specifications and retailer prices

From $13,989 CAD
$10,011 USD
As of October 31, 2026
Save $4,887 CAD (26%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $18,876 CAD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

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 6541995939. Listed at 4 retailers as of October 31, 2026, with prices from $13,989 to $18,876, a $4,887 spread on the same certified stone. 77 Diamonds lists it at $18,876. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6541995939
Dimensions11.57 × 5.99 × 3.71 mm
L/W Ratio1.93
Top View
11.57 mm5.99 mm1.51 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6541995939
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 61.9%

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: Oct 31
Current: $18,876 CAD|Low: $12,700 CAD|High: $19,885 CAD|Avg: $16,026 CAD|-0.2%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 10$12,700 CAD
Retailer 8$13,443 CAD
Retailer 2$13,989 CAD
Retailer 5$14,819 CAD
Retailer 11$15,322 CAD
Retailer 6$15,634 CAD
Retailer 3$16,782 CAD
Retailer 4$17,206 CAD
Retailer 9$17,501 CAD
77 Diamonds$18,876 CAD
Retailer 7$19,885 CAD

36 data points across 11 retailers

4 retailers$13,989 CAD to $18,876 CAD

B+
Cheapest Retailer
-
$13,989 CAD
$10,011 USD
B+
Retailer 2
-
$14,819 CAD
$10,605 USD
View
B
Retailer 3
-
$15,634 CAD
$11,188 USD
View
Most Expensive
B
77 Diamonds
MQZHUVJPYD4 · Nov 1
$18,876 CAD
£10,636 GBP
View
3 more retailers have this diamond
Prices start from $13,989 CADSave up to $4,887 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
$13,989 CAD