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Cushion|Lab Grown|IGI

1.00ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG688502761

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG688502761

Diamond specifications and retailer prices

From €185 EUR
$207 USD
As of November 1, 2026
Save €873 EUR (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €1,667 EUR at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG688502761 or 688502761. Listed at 12 retailers as of November 1, 2026, with a 473% 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

1.00
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG688502761
Dimensions5.88 × 5.70 × 3.70 mm
L/W Ratio1.03
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
5.88 mm5.70 mm1.00 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG688502761
Side View
Table 63.0%Crown 37.5°Girdle: STK-THKPavilion 37.5°Culet: NoneDepth 64.9%

Caratlytics Score

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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: €1,667 EUR|Low: €185 EUR|High: €1,667 EUR|Avg: €639 EUR
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7€185 EUR
Retailer 8€276 EUR
Retailer 2€293 EUR
Retailer 6€299 EUR
Retailer 3€416 EUR
Retailer 5€785 EUR
Retailer 4€1,058 EUR
Do Amore Diamonds€1,667 EUR

41 data points across 8 retailers

12 retailers€185 EUR to €1,058 EUR

A
Cheapest Retailer
-
€185 EUR
$207 USD
Final sale: no returns
A
Retailer 2
-
€213 EUR
$239 USD
View
A
Retailer 3
-
€276 EUR
$310 USD
View
A
Retailer 4
-
€293 EUR
£259 GBP
View
A
Retailer 5
-
€299 EUR
$335 USD
View
B+
Retailer 6
-
€416 EUR
£368 GBP
View
B
Retailer 7
-
€785 EUR
$880 USD
View
B
Retailer 8
-
€881 EUR
$988 USD
View
B
Retailer 9
-
€1,024 EUR
$1,148 USD
View
B
Retailer 10
-
€1,058 EUR
£934 GBP
View
Retailer 11
-
€1,587 EUR
$1,780 USD
View
Price under review
Most Expensive
Do Amore Diamonds
23-688502761 · Nov 2
€1,667 EUR
$1,870 USD
View
Price under review
11 more retailers have this diamond
Prices start from €185 EURSave up to €873 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 Cushion
€185 EUR