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Cushion|Lab Grown|IGI

1.87ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG496122922

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG496122922

Diamond specifications and retailer prices

From $270 USD
As of October 30, 2026
Save $2,040 USD (88%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,310 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.87ct lab-grown cushion diamond

This 1.87ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG496122922 or 496122922. Listed at 9 retailers as of October 30, 2026, with prices from $270 to $2,310, a $2,040 spread on the same certified stone. Do Amore Diamonds lists it at $2,310. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.87
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG496122922
Dimensions7.62 × 6.89 × 4.67 mm
L/W Ratio1.11
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
7.62 mm6.89 mm1.87 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG496122922
Side View
Table 62.0%Crown 36.4°Girdle: STK-THKPavilion 39.9°Culet: NoneDepth 67.8%

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: $632 USD|Low: $193 USD|High: $2,380 USD|Avg: $817 USD|+3.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 8$270 USD
Retailer 4$403 USD
Retailer 5$520 USD
Retailer 1$632 USD
Retailer 7$727 USD
Retailer 6$983 USD
Retailer 3$1,322 USD
Retailer 2$1,620 USD

42 data points across 8 retailers

9 retailers$270 USD to $2,310 USD

A
Cheapest Retailer
-
$270 USD
Final sale: no returns
B+
Retailer 2
-
$403 USD
View
A
Retailer 3
-
$520 USD
View
A
Retailer 4
-
$632 USD
£498 GBP
View
B+
Retailer 5
-
$727 USD
View
B+
Retailer 6
-
$983 USD
View
B
Retailer 7
-
$1,322 USD
£1,041 GBP
View
B
Retailer 8
-
$1,620 USD
View
Most Expensive
B
Do Amore Diamonds
27-020A30AC4 · Oct 31
$2,310 USD
View
8 more retailers have this diamond
Prices start from $270 USDSave up to $2,040 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
1.87ct Cushion
$270 USD