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Cushion|Lab Grown|IGI

1.58ct D SI2 Cushion Lab Grown Diamond

VG • D/SI2 • IGI LG677537664

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG677537664

Diamond specifications and retailer prices

From €618 EUR
$690 USD
As of November 4, 2026
1 retailer carries this diamond
Only listing: €618 EUR at Rare Carat
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 Rare Carat

About this 1.58ct lab-grown cushion diamond

This 1.58ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG677537664 or 677537664. Listed at a single retailer as of November 4, 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

1.58
Carat
D
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.3°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG677537664
Dimensions6.78 × 6.37 × 4.44 mm
L/W Ratio1.06
Girdle conditionFaceted
Culet sizePointed
Cert comments
Pre-existing laser inscription on girdle. As Grown - No indication of post-growth treatment.. This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process.
Top View
6.78 mm6.37 mm1.58 ctD / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG677537664
Side View
Table 60.0%Crown 39.3°Girdle: THN-STKPavilion 34.7°Culet: NoneDepth 69.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 4
Current: €618 EUR|Low: €130 EUR|High: €1,612 EUR|Avg: €762 EUR|-11.0%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 4, 2026
Retailer 3€130 EUR
Retailer 2€396 EUR
Retailer 4€569 EUR
Rare Carat€618 EUR
Retailer 5€1,191 EUR
Retailer 6€1,612 EUR

4 data points across 6 retailers

1 retailer

B+
Rare Carat
6700006096 · Nov 4
€618 EUR
$690 USD
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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+
1.58ct Cushion
€618 EUR