Cushion|Lab Grown|IGI

1.00ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG825655920

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG825655920

Diamond specifications and retailer prices

From $402 USD
As of October 30, 2026
Save $1,938 USD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,340 USD at Brilliant Earth · As of October 30, 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 very-good cut grade and certified by IGI LG825655920 or 825655920. Listed at 14 retailers as of October 30, 2026, with prices from $402 to $2,340, a $1,938 spread on the same certified stone. Brilliant Earth lists it at $2,340. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
D
Color
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825655920
Dimensions5.87 × 5.81 × 3.87 mm
L/W Ratio1.01
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
5.87 mm5.81 mm1.00 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825655920
Side View
Table 61.0%Crown 35°Girdle: MED-THKPavilion 40°Culet: NoneDepth 66.6%

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: $2,340 USD|Low: $402 USD|High: $2,600 USD|Avg: $1,023 USD|-10.0%
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
October 30, 2026
Retailer 14$402 USD
Retailer 6$449 USD
Retailer 2$460 USD
Retailer 13$595 USD
Retailer 12$600 USD
Retailer 3$713 USD
Retailer 8$721 USD
Retailer 10$766 USD
Retailer 7$803 USD
Retailer 5$1,330 USD
Retailer 4$1,473 USD
Retailer 11$1,702 USD
Retailer 9$1,750 USD
Brilliant Earth$2,340 USD

31 data points across 14 retailers

14 retailers$402 USD to $2,340 USD

A
Cheapest Retailer
-
$402 USD
Final sale: no returns
Retailer 2
-
$449 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
$460 USD
£362 GBP
View
A
Retailer 4
-
$595 USD
View
A
Retailer 5
-
$600 USD
View
A
Retailer 6
-
$713 USD
View
A
Retailer 7
-
$721 USD
€687 EUR
View
A
Retailer 8
-
$766 USD
ZAR 12,369 ZAR
View
B+
Retailer 9
-
$803 USD
£632 GBP
View
Retailer 10
-
$1,330 USD
View
Price last confirmed 12 days ago
B
Retailer 11
-
$1,473 USD
View
B
Retailer 12
-
$1,702 USD
View
B
Retailer 13
-
$1,750 USD
£1,378 GBP
View
Most Expensive
B
Brilliant Earth
21581004A · Oct 30
$2,340 USD
View
13 more retailers have this diamond
Prices start from $402 USDSave up to $1,938 USD

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
$402 USD