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6.38ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG665413471

Shape and cutting style on the report: Round brilliant

Certificate IGI LG665413471

Diamond specifications and retailer prices

From $5,950 USD
As of October 28, 2026
1 retailer carries this diamond
Only listing: $5,950 USD 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 6.38ct lab-grown round diamond

This 6.38ct lab-grown round sits in the over five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG665413471 or 665413471. Listed at a single retailer as of October 28, 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

6.38
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665413471
Dimensions11.92 × 11.89 × 7.31 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.92 mm11.89 mm6.38 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665413471
Side View
Table 57.0%Crown 34.6°Girdle: MED-STKPavilion 40.7°CuletDepth 61.3%

Caratlytics Score

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C
Average
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Price History

Last verified: Oct 28
Current: $5,950 USD|Low: $5,950 USD|High: $5,950 USD|Avg: $5,950 USD
October 28, 2026
Rare Carat$5,950 USD

1 data point across 1 retailer

1 retailer

C
Rare Carat
LG15228 · Oct 28
$5,950 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.

C
6.38ct Round
$5,950 USD