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Marquise|Lab Grown|IGI

3.51ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG818653105

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818653105

Diamond specifications and retailer prices

From €1,510 EUR
$1,694 USD
As of October 26, 2026
Save €1,646 EUR (52%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €4,190 EUR at Do Amore Diamonds · As of October 26, 2026
View at Do Amore Diamonds

About this 3.51ct lab-grown marquise diamond

This 3.51ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818653105 or 818653105. Listed at 13 retailers as of October 26, 2026, with a 109% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.51
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818653105
Dimensions15.32 × 7.91 × 4.99 mm
L/W Ratio1.94
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.32 mm7.91 mm3.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818653105
Side View
Table 60.0%Crown 34.4°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 63.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: €4,190 EUR|Low: €704 EUR|High: €4,190 EUR|Avg: €1,813 EUR
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 27, 2026
Retailer 7€704 EUR
Retailer 13€719 EUR
Retailer 4€849 EUR
Retailer 3€905 EUR
Retailer 8€966 EUR
Retailer 6€997 EUR
Retailer 10€1,390 EUR
Retailer 11€1,510 EUR
Retailer 12€2,169 EUR
Retailer 5€2,195 EUR
Retailer 9€2,300 EUR
Retailer 2€3,156 EUR
Do Amore Diamonds€4,190 EUR

21 data points across 13 retailers

13 retailers€1,510 EUR to €3,156 EUR

Retailer 1
-
€704 EUR
$790 USD
Price last confirmed 7 days ago
Retailer 2
-
€719 EUR
£635 GBP
View
Price last confirmed 11 days ago
Retailer 3
-
€849 EUR
$952 USD
View
Price last confirmed 7 days ago
Retailer 4
-
€905 EUR
$1,015 USD
View
Price last confirmed 10 days ago
Retailer 5
-
€966 EUR
View
Price last confirmed 8 days ago
Retailer 6
-
€997 EUR
£881 GBP
View
Price last confirmed 7 days ago
Retailer 7
-
€1,390 EUR
ZAR 25,186 ZAR
View
Price last confirmed 9 days ago
B+
Retailer 8
-
€1,510 EUR
$1,694 USD
View
B+
Retailer 9
-
€2,169 EUR
$2,433 USD
View
Retailer 10
-
€2,195 EUR
$2,462 USD
View
Price last confirmed 7 days ago
Retailer 11
-
€2,300 EUR
$2,580 USD
View
Price last confirmed 8 days ago
B
Retailer 12
-
€3,156 EUR
$3,540 USD
View
Most Expensive
Do Amore Diamonds
27-8E1241D7A · Oct 26
€4,190 EUR
$4,700 USD
View
Price last confirmed 7 days ago
12 more retailers have this diamond
Prices start from €1,510 EURSave up to €1,646 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.

B+
3.51ct Marquise
€1,510 EUR