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Cushion|Lab Grown|IGI

1.87ct J SI1 Cushion Lab Grown Diamond

GD • J/SI1 • IGI LG436046697

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

Certificate IGI LG436046697

Diamond specifications and retailer prices

From $2,003 USD
As of October 30, 2026
Save $3,956 USD (66%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $5,959 USD at MOH London · As of October 29, 2026
View at MOH London

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 J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG436046697 or 436046697. Listed at 5 retailers as of October 29, 2026, with prices from $2,003 to $5,959, a $3,956 spread on the same certified stone. MOH London lists it at $5,959. 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

1.87
Carat
J
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.6°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436046697
Dimensions7.39 × 7.29 × 4.52 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.39 mm7.29 mm1.87 ctJ / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436046697
Side View
Table 62.0%Crown 35.6°Girdle: STK-THKPavilion 37.3°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $5,959 USD|Low: $2,003 USD|High: $5,998 USD|Avg: $3,305 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 5$2,003 USD
Retailer 3$2,075 USD
Retailer 8$2,099 USD
Retailer 2$2,130 USD
Retailer 6$2,768 USD
Retailer 4$3,255 USD
Retailer 7$5,942 USD
MOH London$5,959 USD

13 data points across 8 retailers

5 retailers$2,003 USD to $5,959 USD

B+
Cheapest Retailer
-
$2,003 USD
Final sale: no returns
Retailer 2
-
$2,075 USD
View
Price last confirmed 18 days ago
B+
Retailer 3
-
$2,130 USD
View
B
Retailer 4
-
$3,255 USD
View
Most Expensive
C
MOH London
LG436046697 · Oct 29
$5,959 USD
£4,692 GBP
View
4 more retailers have this diamond
Prices start from $2,003 USDSave up to $3,956 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.

B+
1.87ct Cushion
$2,003 USD