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Marquise|Lab Grown|IGI

1.84ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG843640687

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843640687

Diamond specifications and retailer prices

From $255 USD
As of November 1, 2026
Save $2,095 USD (89%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $2,350 USD at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 1.84ct lab-grown marquise diamond

This 1.84ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG843640687 or 843640687. Listed at 3 retailers as of October 26, 2026, with prices from $255 to $2,350, a $2,095 spread on the same certified stone. Brilliant Earth lists it at $2,350. 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

1.84
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843640687
Dimensions12.99 × 6.53 × 3.97 mm
L/W Ratio1.99
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.99 mm6.53 mm1.84 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843640687
Side View
Table 60.0%Crown 34.6°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $2,350 USD|Low: $246 USD|High: $2,350 USD|Avg: $1,219 USD
Brilliant Earth
Retailer 2
Retailer 3
October 28, 2026
Retailer 2$255 USD
Retailer 3$547 USD
Brilliant Earth$2,350 USD

11 data points across 3 retailers

3 retailers$255 USD to $2,350 USD

A
Cheapest Retailer
-
$255 USD
Final sale: no returns
A
Retailer 2
-
$547 USD
£431 GBP
View
Most Expensive
B
Brilliant Earth
22178312A · Oct 26
$2,350 USD
View
2 more retailers have this diamond
Prices start from $255 USDSave up to $2,095 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
1.84ct Marquise
$255 USD