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Cushion|Lab Grown|IGI

1.77ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG731533573

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG731533573

Diamond specifications and retailer prices

From €383 EUR
$428 USD
As of October 30, 2026
Save €2,669 EUR (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €3,357 EUR at Brilliant Earth · As of October 24, 2026
View at Brilliant Earth

About this 1.77ct lab-grown cushion diamond

This 1.77ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG731533573 or 731533573. Listed at 22 retailers as of October 30, 2026, with a 697% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.77
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.8°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731533573
Dimensions8.25 × 6.61 × 4.38 mm
L/W Ratio1.25
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
8.25 mm6.61 mm1.77 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731533573
Side View
Table 60.0%Crown 29.8°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 66.3%

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: Oct 30
Current: €2,972 EUR|Low: €383 EUR|High: €3,464 EUR|Avg: €1,363 EUR|-11.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 1, 2026
Retailer 6€383 EUR
Retailer 12€497 EUR
Retailer 5€584 EUR
Retailer 2€611 EUR
Retailer 15€613 EUR
Retailer 18€654 EUR
Retailer 13€775 EUR
Retailer 17€808 EUR
Retailer 14€850 EUR
Retailer 4€960 EUR
Retailer 16€1,095 EUR
Retailer 10€1,378 EUR
Retailer 11€1,541 EUR
Retailer 7€1,586 EUR
Retailer 3€1,594 EUR
Retailer 9€1,736 EUR
Retailer 8€2,573 EUR
Brilliant Earth€2,972 EUR
Retailer 19€3,052 EUR

28 data points across 19 retailers

22 retailers€383 EUR to €3,052 EUR

A
Cheapest Retailer
-
€383 EUR
$428 USD
Final sale: no returns
A
Retailer 2
-
€497 EUR
£437 GBP
View
A
Retailer 3
-
€584 EUR
HK$5,100 HKD
View
A
Retailer 4
-
€611 EUR
$683 USD
View
A
Retailer 5
-
€613 EUR
$685 USD
View
A
Retailer 6
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€654 EUR
$731 USD
View
A
Retailer 7
-
€775 EUR
£682 GBP
View
A
Retailer 8
-
€808 EUR
ZAR 14,581 ZAR
View
A
Retailer 9
-
€850 EUR
View
A
Retailer 10
-
€960 EUR
$1,073 USD
View
A
Retailer 11
-
€1,095 EUR
A$1,882 AUD
View
Retailer 12
-
€1,378 EUR
£1,212 GBP
View
Price last confirmed 10 days ago
B+
Retailer 13
-
€1,541 EUR
$1,722 USD
View
B+
Retailer 14
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€1,586 EUR
$1,772 USD
View
B+
Retailer 15
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€1,594 EUR
$1,781 USD
View
Retailer 16
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€1,736 EUR
£1,527 GBP
View
Price last confirmed 11 days ago
Retailer 17
-
€2,457 EUR
$2,745 USD
View
Price last confirmed 27 days ago
Retailer 18
-
€2,573 EUR
$2,875 USD
View
Price last confirmed 11 days ago
B
Retailer 19
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€2,865 EUR
£2,520 GBP
View
B
Retailer 20
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€2,972 EUR
$3,320 USD
View
B
Retailer 21
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€3,052 EUR
$3,410 USD
View
Most Expensive
Brilliant Earth
15616671A · Oct 24
€3,357 EUR
$3,750 USD
View
Price last confirmed 7 days ago
21 more retailers have this diamond
Prices start from €383 EURSave up to €2,669 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
1.77ct Cushion
€383 EUR