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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 $10,806 USD
As of November 2, 2026
Save $5,914 USD (35%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $16,720 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 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 $10,806 to $16,720, a $5,914 spread on the same certified stone. MOH London lists it at $16,720. 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
Color
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: $16,720 USD|Low: $10,806 USD|High: $16,831 USD|Avg: $13,232 USD|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 6$10,806 USD
Retailer 4$11,413 USD
Retailer 2$12,420 USD
Retailer 3$12,691 USD
Retailer 5$15,180 USD
MOH London$16,720 USD

24 data points across 6 retailers

5 retailers$10,806 USD to $16,720 USD

B+
Cheapest Retailer
-
$10,806 USD
B+
Retailer 2
-
$11,413 USD
£8,987 GBP
View
B
Retailer 3
-
$12,420 USD
£9,780 GBP
View
B
Retailer 4
-
$12,691 USD
€12,087 EUR
View
Most Expensive
B
MOH London
0CEAF8FE2 · Oct 29
$16,720 USD
£13,165 GBP
View
4 more retailers have this diamond
Prices start from $10,806 USDSave up to $5,914 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
$10,806 USD