Cushion|Lab Grown|IGI

1.00ct D IF Cushion Lab Grown Diamond

GD • D/IF • IGI LG689562051

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG689562051

Diamond specifications and retailer prices

From $371 USD
As of November 1, 2026
Save $1,277 USD (77%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,180 USD at Brilliant Earth · As of October 21, 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 IF clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG689562051 or 689562051. Listed at 16 retailers as of November 1, 2026, with a 344% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
IF
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689562051
Dimensions7.14 × 5.30 × 3.44 mm
L/W Ratio1.35
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
7.14 mm5.30 mm1.00 ctD / IF
OriginLab Grown
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689562051
Side View
Table 58.0%Crown 35.2°Girdle: STK-VTKPavilion 35.3°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: $2,180 USD|Low: $367 USD|High: $2,220 USD|Avg: $943 USD|-1.8%
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
November 1, 2026
Retailer 10$371 USD
Retailer 3$411 USD
Retailer 14$586 USD
Retailer 12$590 USD
Retailer 15$647 USD
Retailer 5$664 USD
Retailer 9$684 USD
Retailer 11$707 USD
Retailer 8$730 USD
Retailer 4$1,071 USD
Retailer 13$1,320 USD
Retailer 7$1,366 USD
Retailer 6$1,614 USD
Retailer 2$1,648 USD
Brilliant Earth$2,180 USD

40 data points across 15 retailers

16 retailers$371 USD to $1,648 USD

A
Cheapest Retailer
-
$371 USD
Final sale: no returns
Retailer 2
-
$411 USD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
$586 USD
View
B+
Retailer 4
-
$590 USD
View
B+
Retailer 5
-
$647 USD
View
B+
Retailer 6
-
$664 USD
View
B+
Retailer 7
-
$684 USD
€651 EUR
View
B+
Retailer 8
-
$707 USD
ZAR 11,419 ZAR
View
B+
Retailer 9
-
$730 USD
£575 GBP
View
B
Retailer 10
-
$1,071 USD
View
Retailer 11
-
$1,320 USD
View
Price last confirmed 13 days ago
B
Retailer 12
-
$1,366 USD
View
B
Retailer 13
-
$1,558 USD
View
B
Retailer 14
-
$1,614 USD
View
B
Retailer 15
-
$1,648 USD
£1,298 GBP
View
Most Expensive
Brilliant Earth
16360456A · Oct 21
$2,180 USD
View
Price last confirmed 10 days ago
15 more retailers have this diamond
Prices start from $371 USDSave up to $1,277 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
$371 USD