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Round|Lab Grown|IGI

1.78ct E SI2 Round Lab Grown Diamond

VG • E/SI2 • IGI LG786624855

Shape and cutting style on the report: Round brilliant

Certificate IGI LG786624855

Diamond specifications and retailer prices

From €202 EUR
$226 USD
As of October 29, 2026
Save €806 EUR (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €1,008 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 1.78ct lab-grown round diamond

This 1.78ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG786624855 or 786624855. Listed at 13 retailers as of October 29, 2026, with prices from €202 to €1,008, a €806 spread on the same certified stone. MOH London lists it at €1,008. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.78
Carat
E
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786624855
Dimensions7.74 × 7.62 × 4.78 mm
L/W Ratio1.02
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
7.74 mm7.62 mm1.78 ctE / SI2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786624855
Side View
Table 59.0%Crown 37°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.1%

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: Oct 29
Current: €1,008 EUR|Low: €193 EUR|High: €1,369 EUR|Avg: €565 EUR|-2.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 9€202 EUR
Retailer 11€226 EUR
Retailer 3€251 EUR
Retailer 2€414 EUR
Retailer 12€425 EUR
Retailer 5€466 EUR
Retailer 10€486 EUR
Retailer 4€610 EUR
Retailer 8€679 EUR
Retailer 7€725 EUR
Retailer 6€922 EUR
MOH London€1,008 EUR

30 data points across 12 retailers

13 retailers€202 EUR to €1,008 EUR

A
Cheapest Retailer
-
€202 EUR
$226 USD
A
Retailer 2
-
€226 EUR
$253 USD
View
Final sale: no returns
A
Retailer 3
-
€251 EUR
$280 USD
View
A
Retailer 4
-
€414 EUR
View
B+
Retailer 5
-
€425 EUR
$475 USD
View
B+
Retailer 6
-
€466 EUR
£410 GBP
View
B+
Retailer 7
-
€486 EUR
$543 USD
View
B+
Retailer 8
-
€610 EUR
$682 USD
View
B
Retailer 9
-
€679 EUR
$759 USD
View
B
Retailer 10
-
€725 EUR
$810 USD
View
Retailer 11
-
€747 EUR
$835 USD
View
Price last confirmed 47 days ago
B
Retailer 12
-
€922 EUR
$1,030 USD
View
Most Expensive
B
MOH London
LG786624855 · Oct 29
€1,008 EUR
£887 GBP
View
12 more retailers have this diamond
Prices start from €202 EURSave up to €806 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
1.78ct Round
€202 EUR