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Marquise|Natural|GIA

1.70ct H SI1 Marquise Natural Diamond

H/SI1 • GIA 6451431810

Certificate GIA 6451431810

Diamond specifications and retailer prices

From €14,796 EUR
$16,595 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: €14,796 EUR at Taylor and Hart
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Taylor and Hart

About this 1.7ct natural marquise diamond

This 1.7ct natural marquise sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included) and certified by GIA 6451431810. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.70
Carat
H
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36.2°
OriginNatural
Grading LabGIA
CertificateGIA 6451431810
Dimensions11.56 × 6.24 × 4.00 mm
L/W Ratio1.85
Top View
11.56 mm6.24 mm1.70 ctH / SI1
OriginNatural
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6451431810
Side View
Table 62.0%Crown 36.2°Girdle: THK-VTKPavilionCulet: NoneDepth 64.1%

Caratlytics Score

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C
Average
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Price History

Last verified: Oct 31
Current: €14,796 EUR|Low: €14,795 EUR|High: €14,796 EUR|Avg: €14,795 EUR|+0.0%
May 7, 2026
Taylor and Hart€14,796 EUR

2 data points across 1 retailer

1 retailer

C
Taylor and Hart
4H9CMWV · Oct 31
€14,796 EUR
$16,595 USD
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C
1.70ct Marquise
€14,796 EUR