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Marquise|Natural|GIA

1.70ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 1555639716

Certificate GIA 1555639716

Diamond specifications and retailer prices

From $18,949 CAD
$13,560 USD
As of October 29, 2026
Save $10,431 CAD (36%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $29,380 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 1.7ct natural marquise diamond

This 1.7ct natural marquise sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555639716. Listed at 7 retailers as of October 29, 2026, with prices from $18,949 to $29,380, a $10,431 spread on the same certified stone. MOH London lists it at $29,380. 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

1.70
Carat
F
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555639716
Dimensions11.72 × 6.26 × 3.85 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizeNone
Top View
11.72 mm6.26 mm1.70 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555639716
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 61.5%

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 29
Current: $29,380 CAD|Low: $18,949 CAD|High: $29,577 CAD|Avg: $23,399 CAD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 8$18,949 CAD
Retailer 2$19,920 CAD
Retailer 5$20,054 CAD
Retailer 3$21,207 CAD
Retailer 4$23,542 CAD
Retailer 6$26,509 CAD
Retailer 7$26,676 CAD
MOH London$29,380 CAD

39 data points across 8 retailers

7 retailers$18,949 CAD to $29,380 CAD

B+
Cheapest Retailer
-
$18,949 CAD
$13,560 USD
B+
Retailer 2
-
$19,920 CAD
£11,225 GBP
View
B
Retailer 3
-
$20,054 CAD
$14,351 USD
View
B
Retailer 4
-
$21,207 CAD
£11,950 GBP
View
B
Retailer 5
-
$23,542 CAD
€16,045 EUR
View
B
Retailer 6
-
$26,509 CAD
$18,970 USD
View
Most Expensive
B
MOH London
AD75CD469 · Oct 29
$29,380 CAD
£16,555 GBP
View
6 more retailers have this diamond
Prices start from $18,949 CADSave up to $10,431 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+
1.70ct Marquise
$18,949 CAD