Marquise|Lab Grown|IGI

0.71ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG803661811

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG803661811

Diamond specifications and retailer prices

From €135 EUR
$151 USD
As of October 24, 2026
Save €328 EUR (71%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,210 EUR at MOH London · As of October 21, 2026
View at MOH London

About this 0.71ct lab-grown marquise diamond

This 0.71ct lab-grown marquise sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG803661811 or 803661811. Listed at 15 retailers as of October 24, 2026, with a 243% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.71
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.4°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803661811
Dimensions8.98 × 4.67 × 2.96 mm
L/W Ratio1.92
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.98 mm4.67 mm0.71 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG803661811
Side View
Table 62.0%Crown 34.4°Girdle: STK-THKPavilion 41.5°Culet: NoneDepth 63.4%

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 24
Current: €1,210 EUR|Low: €112 EUR|High: €1,228 EUR|Avg: €328 EUR|-0.3%
MOH London
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
October 31, 2026
Retailer 16€116 EUR
Retailer 5€129 EUR
Retailer 15€135 EUR
Retailer 7€144 EUR
Retailer 13€152 EUR
Retailer 3€160 EUR
Retailer 11€240 EUR
Retailer 10€251 EUR
Retailer 14€274 EUR
Retailer 2€353 EUR
Retailer 6€354 EUR
Retailer 12€355 EUR
Retailer 9€376 EUR
Retailer 8€399 EUR
Retailer 4€464 EUR
MOH London€1,210 EUR

43 data points across 16 retailers

15 retailers€135 EUR to €464 EUR

Retailer 1
-
€116 EUR
$130 USD
Price last confirmed 8 days ago
A
Retailer 2
-
€135 EUR
$151 USD
View
A
Retailer 3
-
€144 EUR
$161 USD
View
A
Retailer 4
-
€152 EUR
$170 USD
View
A
Retailer 5
-
€160 EUR
HK$1,400 HKD
View
A
Retailer 6
-
€240 EUR
£211 GBP
View
A
Retailer 7
-
€251 EUR
View
B+
Retailer 8
-
€274 EUR
$306 USD
View
B+
Retailer 9
-
€353 EUR
$394 USD
View
B+
Retailer 10
-
€354 EUR
$396 USD
View
B+
Retailer 11
-
€355 EUR
£312 GBP
View
B+
Retailer 12
-
€376 EUR
$420 USD
View
B
Retailer 13
-
€399 EUR
SGD 602 SGD
View
B
Retailer 14
-
€464 EUR
$518 USD
View
Most Expensive
MOH London
LG803661811 · Oct 21
€1,210 EUR
£1,064 GBP
View
Price last confirmed 10 days ago
14 more retailers have this diamond
Prices start from €135 EURSave up to €328 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
0.71ct Marquise
€135 EUR