Marquise|Lab Grown|IGI

1.15ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG847672149

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG847672149

Diamond specifications and retailer prices

From $341 USD
£269 GBP
As of October 27, 2026
Save $329 USD (49%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $670 USD at Brilliant Earth · As of October 27, 2026
View at Brilliant Earth

About this 1.15ct lab-grown marquise diamond

This 1.15ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG847672149 or 847672149. Listed at 2 retailers as of October 27, 2026, with prices from $341 to $670, a $329 spread on the same certified stone. Brilliant Earth lists it at $670. 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

1.15
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847672149
Dimensions10.60 × 5.39 × 3.48 mm
L/W Ratio1.97
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.60 mm5.39 mm1.15 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847672149
Side View
Table 61.0%Crown 34.8°Girdle: MED-STKPavilion 41.9°Culet: NoneDepth 64.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: $670 USD|Low: $341 USD|High: $670 USD|Avg: $506 USD
Brilliant Earth
Retailer 2
October 27, 2026
Retailer 2$341 USD
Brilliant Earth$670 USD

1 data point across 2 retailers

2 retailers$341 USD to $670 USD

A
Cheapest Retailer
-
$341 USD
£269 GBP
Most Expensive
B
Brilliant Earth
22321093A · Oct 27
$670 USD
View
1 more retailer has this diamond
Prices start from $341 USDSave up to $329 USD

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.

A
1.15ct Marquise
$341 USD