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Marquise|Lab Grown|IGI

1.58ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG803633420

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG803633420

Diamond specifications and retailer prices

From €274 EUR
£241 GBP
As of October 27, 2026
Save €952 EUR (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €1,226 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.58ct lab-grown marquise diamond

This 1.58ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG803633420 or 803633420. Listed at 17 retailers as of October 27, 2026, with prices from €274 to €1,226, a €952 spread on the same certified stone. Brilliant Earth lists it at €1,226. 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

1.58
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803633420
Dimensions11.79 × 6.18 × 3.80 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.79 mm6.18 mm1.58 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803633420
Side View
Table 58.0%Crown 33.4°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 61.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: €1,226 EUR|Low: €190 EUR|High: €1,271 EUR|Avg: €570 EUR|-3.5%
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
October 31, 2026
Retailer 3€198 EUR
Retailer 4€220 EUR
Retailer 17€230 EUR
Retailer 9€245 EUR
Retailer 11€274 EUR
Retailer 10€397 EUR
Retailer 16€419 EUR
Retailer 12€454 EUR
Retailer 6€475 EUR
Retailer 7€494 EUR
Retailer 2€505 EUR
Retailer 15€640 EUR
Retailer 5€789 EUR
Retailer 8€796 EUR
Retailer 13€986 EUR
Retailer 14€994 EUR
Brilliant Earth€1,226 EUR

40 data points across 17 retailers

17 retailers€274 EUR to €1,226 EUR

Retailer 1
-
€198 EUR
$221 USD
Price last confirmed 9 days ago
Retailer 2
-
€230 EUR
$257 USD
View
Price last confirmed 8 days ago
Retailer 3
-
€245 EUR
$274 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
€274 EUR
£241 GBP
View
A
Retailer 5
-
€275 EUR
HK$2,400 HKD
View
A
Retailer 6
-
€397 EUR
View
Retailer 7
-
€419 EUR
$468 USD
View
Price last confirmed 7 days ago
A
Retailer 8
-
€454 EUR
£399 GBP
View
A
Retailer 9
-
€475 EUR
$531 USD
View
A
Retailer 10
-
€494 EUR
$552 USD
View
B+
Retailer 11
-
€505 EUR
A$868 AUD
View
B+
Retailer 12
-
€640 EUR
$715 USD
View
Retailer 13
-
€789 EUR
$882 USD
View
Price last confirmed 7 days ago
B+
Retailer 14
-
€796 EUR
SGD 1,202 SGD
View
Retailer 15
-
€986 EUR
£867 GBP
View
Price last confirmed 8 days ago
B
Retailer 16
-
€994 EUR
$1,110 USD
View
Most Expensive
B
Brilliant Earth
19868126A · Oct 31
€1,226 EUR
$1,370 USD
View
16 more retailers have this diamond
Prices start from €274 EURSave up to €952 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
1.58ct Marquise
€274 EUR