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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
$168 USD
As of October 30, 2026
Save €834 EUR (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €985 EUR at Brilliant Earth · As of October 31, 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 18 retailers as of October 30, 2026, with prices from €150 to €985, a €834 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
Color
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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €985 EUR|Low: €140 EUR|High: €985 EUR|Avg: €402 EUR
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
Retailer 16
Retailer 17
November 1, 2026
Retailer 4€150 EUR
Retailer 2€175 EUR
Retailer 14€186 EUR
Retailer 10€189 EUR
Retailer 12€223 EUR
Retailer 8€310 EUR
Retailer 3€330 EUR
Retailer 13€331 EUR
Retailer 5€334 EUR
Retailer 9€343 EUR
Retailer 17€429 EUR
Retailer 16€473 EUR
Retailer 15€599 EUR
Retailer 7€648 EUR
Retailer 11€872 EUR
Retailer 6€977 EUR
Brilliant Earth€985 EUR

35 data points across 17 retailers

18 retailers€150 EUR to €985 EUR

A
Cheapest Retailer
-
€150 EUR
$168 USD
A
Retailer 2
-
€175 EUR
$195 USD
View
Retailer 3
-
€181 EUR
$202 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
€186 EUR
$208 USD
View
A
Retailer 5
-
€189 EUR
$211 USD
View
Final sale: no returns
A
Retailer 6
-
€223 EUR
£196 GBP
View
A
Retailer 7
-
€310 EUR
View
B+
Retailer 8
-
€330 EUR
$369 USD
View
B+
Retailer 9
-
€331 EUR
£292 GBP
View
B+
Retailer 10
-
€334 EUR
$373 USD
View
B+
Retailer 11
-
€343 EUR
£302 GBP
View
B+
Retailer 12
-
€429 EUR
A$738 AUD
View
B+
Retailer 13
-
€473 EUR
$528 USD
View
B
Retailer 14
-
€599 EUR
$669 USD
View
B
Retailer 15
-
€648 EUR
$724 USD
View
B
Retailer 16
-
€872 EUR
£767 GBP
View
B
Retailer 17
-
€977 EUR
$1,091 USD
View
Most Expensive
B
Brilliant Earth
20750167A · Oct 31
€985 EUR
$1,100 USD
View
17 more retailers have this diamond
Prices start from €150 EURSave up to €834 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