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Marquise|Lab Grown|IGI

1.00ct H SI1 Marquise Lab Grown Diamond

ID • H/SI1 • IGI LG514268659

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG514268659

Diamond specifications and retailer prices

From €511 EUR
$571 USD
As of November 2, 2026
Save €2,257 EUR (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €2,768 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 1ct lab-grown marquise diamond

This 1ct lab-grown marquise sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG514268659 or 514268659. Listed at 11 retailers as of October 29, 2026, with prices from €511 to €2,768, a €2,257 spread on the same certified stone. MOH London lists it at €2,768. 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

1.00
Carat
H
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG514268659
Dimensions10.20 × 5.31 × 3.02 mm
L/W Ratio1.92
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
10.20 mm5.31 mm1.00 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG514268659
Side View
Table 53.5%Crown 35°Girdle: THN-STKPavilion 35°Culet: NoneDepth 56.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €2,768 EUR|Low: €491 EUR|High: €2,786 EUR|Avg: €1,133 EUR|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 5€511 EUR
Retailer 2€519 EUR
Retailer 8€573 EUR
Retailer 6€635 EUR
Retailer 3€752 EUR
Retailer 7€977 EUR
Retailer 9€1,009 EUR
Retailer 4€1,574 EUR
Retailer 10€1,699 EUR
MOH London€2,768 EUR

19 data points across 10 retailers

11 retailers€511 EUR to €2,768 EUR

A
Cheapest Retailer
-
€511 EUR
$571 USD
A
Retailer 2
-
€519 EUR
$580 USD
View
A
Retailer 3
-
€573 EUR
$640 USD
View
Final sale: no returns
A
Retailer 4
-
€573 EUR
$640 USD
View
Retailer 5
-
€635 EUR
$709 USD
View
Price last confirmed 16 days ago
A
Retailer 6
-
€635 EUR
$709 USD
View
B+
Retailer 7
-
€752 EUR
$840 USD
View
B+
Retailer 8
-
€977 EUR
$1,091 USD
View
B
Retailer 9
-
€1,574 EUR
$1,758 USD
View
B
Retailer 10
-
€1,668 EUR
$1,864 USD
View
Most Expensive
B
MOH London
LG514268659 · Oct 29
€2,768 EUR
£2,435 GBP
View
10 more retailers have this diamond
Prices start from €511 EURSave up to €2,257 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
1.00ct Marquise
€511 EUR