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Marquise|Lab Grown|IGI

1.09ct D SI1 Marquise Lab Grown Diamond

EX • D/SI1 • IGI LG817695830

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG817695830

Diamond specifications and retailer prices

From €150 EUR
As of November 6, 2026
Save €835 EUR (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €985 EUR at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.09ct lab-grown marquise diamond

This 1.09ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG817695830 or 817695830. Listed at 19 retailers as of November 6, 2026, with prices from €150 to €985, a €835 spread on the same certified stone. Brilliant Earth lists it at €985. 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

1.09
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817695830
Dimensions10.94 × 5.27 × 3.28 mm
L/W Ratio2.08
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.94 mm5.27 mm1.09 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817695830
Side View
Table 62.0%Crown 37°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 62.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: €985 EUR|Low: €146 EUR|High: €985 EUR|Avg: €411 EUR|+0.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
Retailer 18
November 6, 2026
Retailer 5€150 EUR
Retailer 16€175 EUR
Retailer 17€186 EUR
Retailer 11€189 EUR
Retailer 12€221 EUR
Retailer 2€315 EUR
Retailer 13€328 EUR
Retailer 4€330 EUR
Retailer 6€334 EUR
Retailer 9€343 EUR
Retailer 3€429 EUR
Retailer 15€478 EUR
Retailer 10€515 EUR
Retailer 18€599 EUR
Retailer 8€648 EUR
Retailer 14€870 EUR
Retailer 7€977 EUR
Brilliant Earth€985 EUR

32 data points across 18 retailers

19 retailers€150 EUR to €985 EUR

A
Cheapest Retailer
-
€150 EUR
A
Retailer 2
-
€175 EUR
View
Retailer 3
-
€181 EUR
View
Price last confirmed 12 days ago
A
Retailer 4
-
€186 EUR
View
A
Retailer 5
-
€189 EUR
View
Final sale: no returns
A
Retailer 6
-
€221 EUR
View
A
Retailer 7
-
€315 EUR
View
B+
Retailer 8
-
€328 EUR
View
B+
Retailer 9
-
€330 EUR
View
B+
Retailer 10
-
€334 EUR
View
Retailer 11
-
€343 EUR
View
Price last confirmed 9 days ago
B+
Retailer 12
-
€429 EUR
View
B+
Retailer 13
-
€478 EUR
View
Retailer 14
-
€515 EUR
View
Price last confirmed 9 days ago
B
Retailer 15
-
€599 EUR
View
B
Retailer 16
-
€648 EUR
View
B
Retailer 17
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€870 EUR
View
B
Retailer 18
-
€977 EUR
View
Most Expensive
B
Brilliant Earth
20750167A · Nov 6
€985 EUR
$1,100 USD
View
18 more retailers have this diamond
Prices start from €150 EURSave up to €835 EUR

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
1.09ct Marquise
€150 EUR