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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 November 1, 2026
Save €711 EUR (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €858 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 €858, a €711 spread on the same certified stone. MOH London lists it at €858. 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
Color
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

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: Nov 1
Current: €858 EUR|Low: €141 EUR|High: €863 EUR|Avg: €360 EUR|-0.1%
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
November 2, 2026
Retailer 6€148 EUR
Retailer 5€166 EUR
Retailer 12€172 EUR
Retailer 3€183 EUR
Retailer 14€183 EUR
Retailer 2€322 EUR
Retailer 9€324 EUR
Retailer 15€329 EUR
Retailer 13€399 EUR
Retailer 8€424 EUR
Retailer 10€429 EUR
Retailer 11€474 EUR
Retailer 4€476 EUR
Retailer 7€590 EUR
MOH London€858 EUR

40 data points across 15 retailers

20 retailers€148 EUR to €858 EUR

Retailer 1
-
€147 EUR
$164 USD
Price last confirmed 41 days ago
A
Retailer 2
-
€148 EUR
$165 USD
View
A
Retailer 3
-
€166 EUR
$185 USD
View
Final sale: no returns
Retailer 4
-
€170 EUR
$190 USD
View
Price last confirmed 40 days ago
A
Retailer 5
-
€172 EUR
$192 USD
View
Retailer 6
-
€180 EUR
$201 USD
View
Price last confirmed 41 days ago
Retailer 7
-
€183 EUR
$205 USD
View
Price last confirmed 7 days ago
A
Retailer 8
-
€183 EUR
$205 USD
View
B+
Retailer 9
-
€300 EUR
$335 USD
View
B+
Retailer 10
-
€322 EUR
£283 GBP
View
B+
Retailer 11
-
€324 EUR
View
B+
Retailer 12
-
€329 EUR
$368 USD
View
B
Retailer 13
-
€399 EUR
$446 USD
View
B+
Retailer 14
-
€424 EUR
£373 GBP
View
B+
Retailer 15
-
€429 EUR
A$738 AUD
View
B
Retailer 16
-
€474 EUR
$530 USD
View
B
Retailer 17
-
€476 EUR
$532 USD
View
Retailer 18
-
€584 EUR
$653 USD
View
Price last confirmed 42 days ago
B
Retailer 19
-
€590 EUR
$659 USD
View
Most Expensive
B
MOH London
LG781611998 · Oct 26
€858 EUR
£755 GBP
View
19 more retailers have this diamond
Prices start from €148 EURSave up to €711 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