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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 $13,560 USD
As of October 29, 2026
Save $7,465 USD (36%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $21,025 USD 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 $13,560 to $21,025, a $7,465 spread on the same certified stone. MOH London lists it at $21,025. 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: $21,025 USD|Low: $13,560 USD|High: $21,166 USD|Avg: $16,765 USD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 8$13,560 USD
Retailer 2$14,255 USD
Retailer 5$14,351 USD
Retailer 3$15,176 USD
Retailer 4$16,847 USD
Retailer 6$18,970 USD
Retailer 7$19,090 USD
MOH London$21,025 USD

38 data points across 8 retailers

7 retailers$13,560 USD to $21,025 USD

B+
Cheapest Retailer
-
$13,560 USD
B+
Retailer 2
-
$14,255 USD
£11,225 GBP
View
B
Retailer 3
-
$14,351 USD
View
B
Retailer 4
-
$15,176 USD
£11,950 GBP
View
B
Retailer 5
-
$16,847 USD
€16,045 EUR
View
B
Retailer 6
-
$18,970 USD
View
Most Expensive
B
MOH London
AD75CD469 · Oct 29
$21,025 USD
£16,555 GBP
View
6 more retailers have this diamond
Prices start from $13,560 USDSave up to $7,465 USD

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
$13,560 USD