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Cushion|Lab Grown|IGI

1.00ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG818640099

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818640099

Diamond specifications and retailer prices

From €570 EUR
$637 USD
As of October 30, 2026
Save €1,766 EUR (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €2,336 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818640099 or 818640099. Listed at 16 retailers as of October 30, 2026, with prices from €570 to €2,336, a €1,766 spread on the same certified stone. Brilliant Earth lists it at €2,336. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818640099
Dimensions6.98 × 5.35 × 3.55 mm
L/W Ratio1.30
Girdle conditionFaceted
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
6.98 mm5.35 mm1.00 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818640099
Side View
Table 62.0%Crown 33.8°Girdle: THN-STKPavilion 41.4°Culet: NoneDepth 66.4%

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: €2,336 EUR|Low: €343 EUR|High: €2,408 EUR|Avg: €1,141 EUR|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 1, 2026
Retailer 16€482 EUR
Retailer 15€570 EUR
Retailer 14€584 EUR
Retailer 13€658 EUR
Retailer 7€716 EUR
Retailer 5€726 EUR
Retailer 10€802 EUR
Retailer 9€887 EUR
Retailer 12€918 EUR
Retailer 8€1,160 EUR
Retailer 11€1,169 EUR
Retailer 6€1,410 EUR
Retailer 4€1,743 EUR
Retailer 3€1,872 EUR
Retailer 2€2,230 EUR
Brilliant Earth€2,336 EUR

39 data points across 16 retailers

16 retailers€570 EUR to €2,336 EUR

Retailer 1
-
€482 EUR
$539 USD
Price last confirmed 13 days ago
Final sale: no returns
A
Retailer 2
-
€570 EUR
$637 USD
View
A
Retailer 3
-
€584 EUR
HK$5,100 HKD
View
A
Retailer 4
-
€658 EUR
$735 USD
View
A
Retailer 5
-
€716 EUR
$800 USD
View
A
Retailer 6
-
€726 EUR
$811 USD
View
B+
Retailer 7
-
€802 EUR
View
B+
Retailer 8
-
€887 EUR
£781 GBP
View
B+
Retailer 9
-
€918 EUR
ZAR 16,574 ZAR
View
Retailer 10
-
€1,160 EUR
$1,296 USD
View
Price last confirmed 53 days ago
B+
Retailer 11
-
€1,169 EUR
$1,306 USD
View
B
Retailer 12
-
€1,410 EUR
SGD 2,128 SGD
View
B
Retailer 13
-
€1,743 EUR
$1,947 USD
View
B
Retailer 14
-
€1,872 EUR
$2,092 USD
View
B
Retailer 15
-
€2,230 EUR
£1,962 GBP
View
Most Expensive
B
Brilliant Earth
21086551A · Oct 31
€2,336 EUR
$2,610 USD
View
15 more retailers have this diamond
Prices start from €570 EURSave up to €1,766 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
€570 EUR