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Marquise|Lab Grown|IGI

1.00ct G SI1 Marquise Lab Grown Diamond

VG • G/SI1 • IGI LG512221601

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG512221601

Diamond specifications and retailer prices

From €797 EUR
$890 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: €797 EUR 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 1ct lab-grown marquise diamond

This 1ct lab-grown marquise sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG512221601 or 512221601. Listed at a single retailer as of October 31, 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

1.00
Carat
G
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512221601
Dimensions10.79 × 5.15 × 2.98 mm
L/W Ratio2.10
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
10.79 mm5.15 mm1.00 ctG / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG512221601
Side View
Table 58.5%Crown 38.5°Girdle: MED-STKPavilion 34.7°Culet: NoneDepth 57.9%

Caratlytics Score

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C
Average
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Price History

Last verified: Oct 31
Current: €797 EUR|Low: €430 EUR|High: €2,215 EUR|Avg: €1,193 EUR|-4.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
September 7, 2026
Retailer 5€430 EUR
Retailer 9€610 EUR
Retailer 4€770 EUR
Brilliant Earth€797 EUR
Retailer 3€1,002 EUR
Retailer 2€1,020 EUR
Retailer 8€1,050 EUR
Retailer 7€1,595 EUR
Retailer 10€1,789 EUR
Retailer 6€2,040 EUR

79 data points across 10 retailers

1 retailer

C
Brilliant Earth
19749159A · Oct 31
€797 EUR
$890 USD
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C
1.00ct Marquise
€797 EUR