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Cushion|Lab Grown|IGI

1.70ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG470141757

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG470141757

Diamond specifications and retailer prices

From €1,298 EUR
$1,450 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: €1,298 EUR at Brilliant Earth
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 Brilliant Earth

About this 1.7ct lab-grown cushion diamond

This 1.7ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG470141757 or 470141757. 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. 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
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG470141757
Dimensions6.80 × 6.55 × 4.46 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.80 mm6.55 mm1.70 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG470141757
Side View
Table 60.0%Crown 35.1°Girdle: STK-THKPavilion 35.4°Culet: NoneDepth 68.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: €1,298 EUR|Low: €140 EUR|High: €1,799 EUR|Avg: €773 EUR|-7.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 4, 2026
Retailer 3€140 EUR
Retailer 5€324 EUR
Retailer 8€463 EUR
Retailer 7€525 EUR
Retailer 6€592 EUR
Retailer 9€687 EUR
Retailer 2€825 EUR
Brilliant Earth€1,298 EUR
Retailer 4€1,674 EUR

65 data points across 9 retailers

1 retailer

B
Brilliant Earth
4586136B · Oct 31
€1,298 EUR
$1,450 USD
View

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 Cushion
€1,298 EUR