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Marquise|Lab Grown|IGI

0.98ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG668448992

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG668448992

Diamond specifications and retailer prices

From $690 USD
As of October 28, 2026
1 retailer carries this diamond
Only listing: $690 USD 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 0.98ct lab-grown marquise diamond

This 0.98ct lab-grown marquise sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG668448992 or 668448992. 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

0.98
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG668448992
Dimensions10.31 × 5.23 × 3.22 mm
L/W Ratio1.97
Girdle conditionFaceted
Top View
10.31 mm5.23 mm0.98 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG668448992
Side View
Table 64.0%Crown 36.5°Girdle: THN-STKPavilion 40.6°Culet: NoneDepth 61.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 28
Current: $690 USD|Low: $171 USD|High: $930 USD|Avg: $592 USD|-25.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
March 18, 2026
Retailer 5$171 USD
Retailer 7$342 USD
Retailer 6$343 USD
Retailer 4$466 USD
Retailer 3$541 USD
Brilliant Earth$690 USD
Retailer 2$759 USD

31 data points across 7 retailers

1 retailer

B
Brilliant Earth
15151043A · Oct 28
$690 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
0.98ct Marquise
$690 USD