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Cushion|Lab Grown|IGI

1.88ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG727510778

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG727510778

Diamond specifications and retailer prices

From $496 USD
As of October 30, 2026
Save $3,364 USD (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,860 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.88ct lab-grown cushion diamond

This 1.88ct 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 LG727510778 or 727510778. Listed at 13 retailers as of October 30, 2026, with prices from $496 to $3,860, a $3,364 spread on the same certified stone. Brilliant Earth lists it at $3,860. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.88
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG727510778
Dimensions8.08 × 6.70 × 4.59 mm
L/W Ratio1.21
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
8.08 mm6.70 mm1.88 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG727510778
Side View
Table 61.0%Crown 35.7°Girdle: MED-STKPavilion 38.2°Culet: NoneDepth 68.5%

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: $3,860 USD|Low: $354 USD|High: $4,590 USD|Avg: $1,882 USD|-15.9%
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
October 30, 2026
Retailer 5$496 USD
Retailer 7$667 USD
Retailer 13$720 USD
Retailer 9$793 USD
Retailer 6$868 USD
Retailer 3$1,220 USD
Retailer 2$1,285 USD
Retailer 11$1,475 USD
Retailer 10$2,029 USD
Retailer 4$3,253 USD
Retailer 12$3,275 USD
Retailer 8$3,580 USD
Brilliant Earth$3,860 USD

30 data points across 13 retailers

13 retailers$496 USD to $3,860 USD

A
Cheapest Retailer
-
$496 USD
Final sale: no returns
A
Retailer 2
-
$667 USD
View
A
Retailer 3
-
$720 USD
View
A
Retailer 4
-
$793 USD
View
A
Retailer 5
-
$868 USD
€827 EUR
View
A
Retailer 6
-
$1,220 USD
View
A
Retailer 7
-
$1,285 USD
A$1,977 AUD
View
A
Retailer 8
-
$1,475 USD
View
B+
Retailer 9
-
$2,029 USD
£1,598 GBP
View
Retailer 10
-
$3,253 USD
A$5,005 AUD
View
Price last confirmed 23 days ago
Retailer 11
-
$3,275 USD
View
Price last confirmed 9 days ago
B
Retailer 12
-
$3,580 USD
View
Most Expensive
B
Brilliant Earth
15510545Y · Oct 30
$3,860 USD
View
12 more retailers have this diamond
Prices start from $496 USDSave up to $3,364 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
1.88ct Cushion
$496 USD