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Marquise|Natural|GIA

1.70ct I SI2 Marquise Natural Diamond

ID • I/SI2 • GIA 5556191720

Certificate GIA 5556191720

Diamond specifications and retailer prices

From €9,634 EUR
$10,806 USD
As of November 2, 2026
Save €5,272 EUR (35%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €14,907 EUR 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5556191720. Listed at 5 retailers as of October 29, 2026, with prices from €9,634 to €14,907, a €5,272 spread on the same certified stone. MOH London lists it at €14,907. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5556191720
Dimensions11.92 × 6.36 × 3.65 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizeNone
Top View
11.92 mm6.36 mm1.70 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5556191720
Side View
Table 57.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 57.4%

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: €14,907 EUR|Low: €9,634 EUR|High: €15,006 EUR|Avg: €11,798 EUR|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 6€9,634 EUR
Retailer 4€10,176 EUR
Retailer 2€11,074 EUR
Retailer 3€11,315 EUR
Retailer 5€13,534 EUR
MOH London€14,907 EUR

24 data points across 6 retailers

5 retailers€9,634 EUR to €14,907 EUR

B+
Cheapest Retailer
-
€9,634 EUR
$10,806 USD
B+
Retailer 2
-
€10,176 EUR
£8,987 GBP
View
B
Retailer 3
-
€11,074 EUR
£9,780 GBP
View
B
Retailer 4
-
€11,315 EUR
View
Most Expensive
B
MOH London
0CEAF8FE2 · Oct 29
€14,907 EUR
£13,165 GBP
View
4 more retailers have this diamond
Prices start from €9,634 EURSave up to €5,272 EUR

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
€9,634 EUR