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Round|Lab Grown|IGI

1.00ct E SI2 Round Lab Grown Diamond

ID • E/SI2 • IGI LG781611998

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781611998

Diamond specifications and retailer prices

From €148 EUR
$165 USD
As of October 29, 2026
Save €713 EUR (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €861 EUR at MOH London · As of October 26, 2026
View at MOH London

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG781611998 or 781611998. Listed at 20 retailers as of October 26, 2026, with prices from €148 to €861, a €713 spread on the same certified stone. MOH London lists it at €861. 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
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781611998
Dimensions6.48 × 6.43 × 3.90 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.48 mm6.43 mm1.00 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781611998
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.4%

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 29
Current: €861 EUR|Low: €141 EUR|High: €866 EUR|Avg: €370 EUR|+0.8%
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
October 29, 2026
Retailer 5€148 EUR
Retailer 4€166 EUR
Retailer 10€173 EUR
Retailer 13€184 EUR
Retailer 15€184 EUR
Retailer 2€325 EUR
Retailer 9€326 EUR
Retailer 14€331 EUR
Retailer 12€401 EUR
Retailer 8€428 EUR
Retailer 11€431 EUR
Retailer 3€478 EUR
Retailer 7€494 EUR
Retailer 6€592 EUR
MOH London€861 EUR

39 data points across 15 retailers

20 retailers€148 EUR to €861 EUR

A
Retailer 1
-
€147 EUR
$164 USD
Price last confirmed 38 days ago
A
Retailer 2
-
€148 EUR
$165 USD
View
A
Retailer 3
-
€166 EUR
$185 USD
View
Final sale: no returns
A
Retailer 4
-
€171 EUR
$190 USD
View
Price last confirmed 37 days ago
A
Retailer 5
-
€173 EUR
$192 USD
View
A
Retailer 6
-
€181 EUR
$201 USD
View
Price last confirmed 38 days ago
A
Retailer 7
-
€184 EUR
$205 USD
View
A
Retailer 8
-
€184 EUR
$205 USD
View
B+
Retailer 9
-
€301 EUR
$335 USD
View
B+
Retailer 10
-
€325 EUR
£284 GBP
View
B+
Retailer 11
-
€326 EUR
View
B+
Retailer 12
-
€331 EUR
$368 USD
View
B
Retailer 13
-
€401 EUR
$446 USD
View
B+
Retailer 14
-
€428 EUR
£375 GBP
View
B+
Retailer 15
-
€431 EUR
A$738 AUD
View
B
Retailer 16
-
€478 EUR
$532 USD
View
B
Retailer 17
-
€494 EUR
$550 USD
View
B
Retailer 18
-
€587 EUR
$653 USD
View
Price last confirmed 38 days ago
B
Retailer 19
-
€592 EUR
$659 USD
View
Most Expensive
B
MOH London
LG781611998 · Oct 26
€861 EUR
£755 GBP
View
19 more retailers have this diamond
Prices start from €148 EURSave up to €713 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 Round
€148 EUR