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Cushion|Lab Grown|IGI

1.70ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG578353174

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG578353174

Diamond specifications and retailer prices

From €739 EUR
$829 USD
As of October 27, 2026
Save €910 EUR (55%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €1,649 EUR at Do Amore Diamonds · As of October 27, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG578353174 or 578353174. Listed at 5 retailers as of October 27, 2026, with prices from €739 to €1,649, a €910 spread on the same certified stone. Do Amore Diamonds lists it at €1,649. 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
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG578353174
Dimensions7.83 × 6.46 × 4.41 mm
L/W Ratio1.21
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.83 mm6.46 mm1.70 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG578353174
Side View
Table 58.0%Crown 34.2°Girdle: THN-STKPavilion 38.9°Culet: NoneDepth 68.3%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: €1,649 EUR|Low: €137 EUR|High: €1,747 EUR|Avg: €747 EUR|-5.6%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 25, 2026
Retailer 6€204 EUR
Retailer 3€372 EUR
Retailer 8€407 EUR
Retailer 9€497 EUR
Retailer 7€689 EUR
Retailer 4€739 EUR
Retailer 2€944 EUR
Retailer 5€1,070 EUR
Do Amore Diamonds€1,649 EUR

15 data points across 9 retailers

5 retailers€739 EUR to €1,649 EUR

Retailer 1
-
€372 EUR
$417 USD
Price last confirmed 8 days ago
B+
Retailer 2
-
€739 EUR
$829 USD
View
Retailer 3
-
€944 EUR
£834 GBP
View
Price last confirmed 8 days ago
Retailer 4
-
€1,070 EUR
$1,200 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Do Amore Diamonds
27-6B70F40E5 · Oct 27
€1,649 EUR
$1,850 USD
View
4 more retailers have this diamond
Prices start from €739 EURSave up to €910 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.

B+
1.70ct Cushion
€739 EUR