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Cushion|Lab Grown|IGI

1.00ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG840630443

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840630443

Diamond specifications and retailer prices

From €431 EUR
$482 USD
As of November 1, 2026
Save €1,023 EUR (70%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,455 EUR at Helzberg Diamonds · As of October 31, 2026
View at Helzberg Diamonds

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840630443 or 840630443. Listed at 15 retailers as of October 31, 2026, with prices from €431 to €1,455, a €1,023 spread on the same certified stone. Helzberg Diamonds lists it at €1,455. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840630443
Dimensions7.02 × 5.11 × 3.47 mm
L/W Ratio1.37
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
7.02 mm5.11 mm1.00 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840630443
Side View
Table 64.0%Crown 35.8°Girdle: MED-VTKPavilion 37.8°Culet: NoneDepth 67.9%

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: €1,455 EUR|Low: €263 EUR|High: €1,736 EUR|Avg: €772 EUR
Helzberg Diamonds
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
November 1, 2026
Retailer 15€263 EUR
Retailer 6€431 EUR
Retailer 12€436 EUR
Retailer 5€462 EUR
Retailer 8€471 EUR
Retailer 3€492 EUR
Retailer 9€492 EUR
Retailer 13€620 EUR
Retailer 10€664 EUR
Retailer 7€802 EUR
Retailer 4€863 EUR
Retailer 2€1,017 EUR
Retailer 14€1,195 EUR
Retailer 11€1,226 EUR
Helzberg Diamonds€1,455 EUR

20 data points across 15 retailers

15 retailers€431 EUR to €1,455 EUR

Retailer 1
-
€263 EUR
£231 GBP
Price last confirmed 15 days ago
A
Retailer 2
-
€431 EUR
$482 USD
View
A
Retailer 3
-
€436 EUR
ZAR 7,874 ZAR
View
A
Retailer 4
-
€462 EUR
$516 USD
View
A
Retailer 5
-
€471 EUR
£414 GBP
View
A
Retailer 6
-
€492 EUR
$550 USD
View
A
Retailer 7
-
€492 EUR
View
A
Retailer 8
-
€620 EUR
A$1,065 AUD
View
A
Retailer 9
-
€664 EUR
$742 USD
View
B+
Retailer 10
-
€802 EUR
SGD 1,211 SGD
View
B+
Retailer 11
-
€863 EUR
$964 USD
View
B+
Retailer 12
-
€1,017 EUR
£895 GBP
View
Retailer 13
-
€1,195 EUR
$1,335 USD
View
Price last confirmed 13 days ago
B+
Retailer 14
-
€1,226 EUR
$1,370 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMJGKKJ · Oct 31
€1,455 EUR
$1,625 USD
View
14 more retailers have this diamond
Prices start from €431 EURSave up to €1,023 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
€431 EUR