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Cushion|Lab Grown|IGI

1.88ct D IF Cushion Lab Grown Diamond

D/IF • IGI LG768630864

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG768630864

Diamond specifications and retailer prices

From $516 USD
As of October 30, 2026
Save $3,284 USD (86%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,800 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) and certified by IGI LG768630864 or 768630864. Listed at 13 retailers as of October 30, 2026, with prices from $516 to $3,800, a $3,284 spread on the same certified stone. Brilliant Earth lists it at $3,800. 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

1.88
Carat
D
Color
IF
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768630864
Dimensions8.21 × 6.58 × 4.43 mm
L/W Ratio1.25
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
8.21 mm6.58 mm1.88 ctD / IF
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768630864
Side View
Table 56.0%Crown 36°Girdle: MED-THKPavilion 40.2°Culet: NoneDepth 67.3%

Caratlytics Score

How it works →
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: $3,800 USD|Low: $368 USD|High: $5,600 USD|Avg: $1,972 USD|-32.1%
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$516 USD
Retailer 8$674 USD
Retailer 13$730 USD
Retailer 10$804 USD
Retailer 6$879 USD
Retailer 3$1,221 USD
Retailer 2$1,306 USD
Retailer 11$1,490 USD
Retailer 7$2,070 USD
Retailer 4$3,253 USD
Retailer 12$3,275 USD
Retailer 9$3,640 USD
Brilliant Earth$3,800 USD

30 data points across 13 retailers

13 retailers$516 USD to $3,800 USD

A
Cheapest Retailer
-
$516 USD
Final sale: no returns
A
Retailer 2
-
$674 USD
View
A
Retailer 3
-
$730 USD
View
B+
Retailer 4
-
$804 USD
View
A
Retailer 5
-
$879 USD
€837 EUR
View
A
Retailer 6
-
$1,221 USD
View
A
Retailer 7
-
$1,306 USD
A$2,009 AUD
View
B+
Retailer 8
-
$1,490 USD
View
B+
Retailer 9
-
$2,070 USD
£1,630 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 10 days ago
B
Retailer 12
-
$3,640 USD
View
Most Expensive
B
Brilliant Earth
17840590Y · Oct 30
$3,800 USD
View
12 more retailers have this diamond
Prices start from $516 USDSave up to $3,284 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
$516 USD