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Marquise|Natural|GIA

1.70ct M SI2 Marquise Natural Diamond

ID • M/SI2 • GIA 6555485856

Certificate GIA 6555485856

Diamond specifications and retailer prices

From $3,660 USD
As of November 5, 2026
Save $25 USD (1%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $3,685 USD at Moon Ocean · As of November 2, 2026
View at Moon Ocean

About this 1.7ct natural marquise diamond

This 1.7ct natural marquise sits in the one-and-a-half to two carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555485856. Listed at 2 retailers as of November 2, 2026, with a relatively tight 1% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
M
Color
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.4°
Pavilion angle41.16°
OriginNatural
Grading LabGIA
CertificateGIA 6555485856
Dimensions11.36 × 6.16 × 4.13 mm
L/W Ratio1.84
Girdle conditionVery Thick
Key to symbols
Twinning Wisp, Feather
Top View
11.36 mm6.16 mm1.70 ctM / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555485856
Side View
Table 58.0%Crown 39.4°Girdle: MED-VTKPavilion 41.16°Culet: NoneDepth 67.0%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: $3,685 USD|Low: $3,660 USD|High: $3,930 USD|Avg: $3,776 USD|-5.2%
Moon Ocean
Retailer 2
November 2, 2026
Retailer 2$3,660 USD
Moon Ocean$3,685 USD

26 data points across 2 retailers

2 retailers$3,660 USD to $3,685 USD

B+
Cheapest Retailer
-
$3,660 USD
Most Expensive
B+
Moon Ocean
NVN-DFE53A128-856 · Nov 2
$3,685 USD
£2,902 GBP
View
1 more retailer has this diamond
Prices start from $3,660 USDSave up to $25 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
$3,660 USD