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Cushion|Lab Grown|IGI

0.78ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG685588512

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG685588512

Diamond specifications and retailer prices

From €159 EUR
$178 USD
As of October 30, 2026
Save €1,237 EUR (89%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €1,396 EUR at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 0.78ct lab-grown cushion diamond

This 0.78ct lab-grown cushion sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG685588512 or 685588512. Listed at 10 retailers as of October 30, 2026, with prices from €159 to €1,396, a €1,237 spread on the same certified stone. Do Amore Diamonds lists it at €1,396. 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

0.78
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685588512
Dimensions6.18 × 4.91 × 3.32 mm
L/W Ratio1.26
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
6.18 mm4.91 mm0.78 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685588512
Side View
Table 60.0%Crown 36.6°Girdle: MED-STKPavilion 37.2°Culet: NoneDepth 67.6%

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 30
Current: €1,396 EUR|Low: €113 EUR|High: €1,396 EUR|Avg: €565 EUR
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 6€159 EUR
Retailer 4€176 EUR
Retailer 7€240 EUR
Retailer 5€269 EUR
Retailer 2€346 EUR
Retailer 3€911 EUR
Retailer 8€953 EUR
Do Amore Diamonds€1,396 EUR

39 data points across 8 retailers

10 retailers€159 EUR to €1,396 EUR

A
Cheapest Retailer
-
€159 EUR
$178 USD
Final sale: no returns
A
Retailer 2
-
€176 EUR
$197 USD
View
A
Retailer 3
-
€240 EUR
$268 USD
View
A
Retailer 4
-
€269 EUR
$300 USD
View
B+
Retailer 5
-
€346 EUR
£304 GBP
View
B
Retailer 6
-
€781 EUR
$872 USD
View
B
Retailer 7
-
€911 EUR
£801 GBP
View
B
Retailer 8
-
€953 EUR
$1,064 USD
View
B
Retailer 9
-
€1,361 EUR
$1,520 USD
View
Most Expensive
B
Do Amore Diamonds
23-685588512 · Oct 30
€1,396 EUR
$1,560 USD
View
9 more retailers have this diamond
Prices start from €159 EURSave up to €1,237 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
0.78ct Cushion
€159 EUR