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Cushion|Lab Grown|IGI

1.70ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG478107116

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG478107116

Diamond specifications and retailer prices

From €425 EUR
$473 USD
As of October 29, 2026
Save €1,752 EUR (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €3,091 EUR at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.7ct lab-grown cushion diamond

This 1.7ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG478107116 or 478107116. Listed at 12 retailers as of October 29, 2026, with a 412% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.70
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478107116
Dimensions7.27 × 6.63 × 4.54 mm
L/W Ratio1.10
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
7.27 mm6.63 mm1.70 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478107116
Side View
Table 62.0%Crown 35.2°Girdle: MED-THKPavilion 40.1°Culet: NoneDepth 68.5%

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: €3,091 EUR|Low: €432 EUR|High: €3,091 EUR|Avg: €1,217 EUR
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 8€432 EUR
Retailer 2€612 EUR
Retailer 10€658 EUR
Retailer 9€686 EUR
Retailer 3€786 EUR
Retailer 6€1,011 EUR
Retailer 7€1,734 EUR
Retailer 4€1,761 EUR
Retailer 5€2,177 EUR
Do Amore Diamonds€3,091 EUR

44 data points across 10 retailers

12 retailers€425 EUR to €2,177 EUR

A
Cheapest Retailer
-
€425 EUR
$473 USD
A
Retailer 2
-
€432 EUR
$481 USD
View
A
Retailer 3
-
€566 EUR
$630 USD
View
A
Retailer 4
-
€612 EUR
£536 GBP
View
B+
Retailer 5
-
€658 EUR
$732 USD
View
B+
Retailer 6
-
€686 EUR
$764 USD
View
B+
Retailer 7
-
€786 EUR
£689 GBP
View
Retailer 8
-
€1,011 EUR
$1,125 USD
View
Price last confirmed 8 days ago
B
Retailer 9
-
€1,734 EUR
$1,930 USD
View
B
Retailer 10
-
€1,761 EUR
£1,543 GBP
View
B
Retailer 11
-
€2,177 EUR
CA$3,366 CAD
View
Most Expensive
Do Amore Diamonds
27-531204799 · Oct 29
€3,091 EUR
$3,440 USD
View
Price under review
11 more retailers have this diamond
Prices start from €425 EURSave up to €1,752 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
1.70ct Cushion
€425 EUR