Marquise|Lab Grown|IGI

3.70ct I SI1 Marquise Lab Grown Diamond

ID • I/SI1 • IGI LG816628432

Shape and cutting style on the report: Hexagonal modified brilliant

Certificate IGI LG816628432

Diamond specifications and retailer prices

From €2,384 EUR
SGD 3,599 SGD
As of October 31, 2026
Save €613 EUR (20%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €2,997 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 3.7ct lab-grown marquise diamond

This 3.7ct lab-grown marquise sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG816628432 or 816628432. Listed at 6 retailers as of October 29, 2026, with prices from €2,384 to €2,997, a €613 spread on the same certified stone. MOH London lists it at €2,997. 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

3.70
Carat
I
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816628432
Dimensions15.21 × 7.68 × 4.96 mm
L/W Ratio1.98
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.21 mm7.68 mm3.70 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816628432
Side View
Table 70.0%Crown 36.5°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 64.6%

Caratlytics Score

How it works →
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 31
Current: €2,997 EUR|Low: €868 EUR|High: €3,107 EUR|Avg: €1,770 EUR|-2.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 4€868 EUR
Retailer 2€1,148 EUR
Retailer 3€1,151 EUR
Retailer 6€1,788 EUR
Retailer 5€2,384 EUR
MOH London€2,997 EUR

21 data points across 6 retailers

6 retailers€2,384 EUR to €2,997 EUR

Retailer 1
-
€663 EUR
$741 USD
Price under review
Retailer 2
-
€868 EUR
$970 USD
View
Price under review
Retailer 3
-
€1,148 EUR
View
Price under review
Retailer 4
-
€1,151 EUR
$1,286 USD
View
Price under review
A
Retailer 5
-
€2,384 EUR
SGD 3,599 SGD
View
Most Expensive
A
MOH London
LG816628432 · Oct 29
€2,997 EUR
£2,636 GBP
View
5 more retailers have this diamond
Prices start from €2,384 EURSave up to €613 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
3.70ct Marquise
€2,384 EUR