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Cushion|Lab Grown|IGI

1.89ct H SI1 Cushion Lab Grown Diamond

VG • H/SI1 • IGI LG459199006

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG459199006

Diamond specifications and retailer prices

From $475 USD
As of October 29, 2026
Save $1,514 USD (76%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,989 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.89ct lab-grown cushion diamond

This 1.89ct lab-grown cushion sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG459199006 or 459199006. Listed at 10 retailers as of October 29, 2026, with prices from $475 to $1,989, a $1,514 spread on the same certified stone. MOH London lists it at $1,989. 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

1.89
Carat
H
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG459199006
Dimensions7.81 × 6.66 × 4.64 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.81 mm6.66 mm1.89 ctH / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG459199006
Side View
Table 62.5%Crown 36.2°Girdle: STK-THKPavilion 39.3°Culet: NoneDepth 69.7%

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 29
Current: $1,989 USD|Low: $296 USD|High: $2,002 USD|Avg: $960 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 10$414 USD
Retailer 8$475 USD
Retailer 7$525 USD
Retailer 12$544 USD
Retailer 6$610 USD
Retailer 11$650 USD
Retailer 2$672 USD
Retailer 5$980 USD
Retailer 9$1,127 USD
Retailer 4$1,415 USD
Retailer 3$1,900 USD
MOH London$1,989 USD

23 data points across 12 retailers

10 retailers$475 USD to $1,989 USD

A
Cheapest Retailer
-
$475 USD
A
Retailer 2
-
$525 USD
€500 EUR
View
B+
Retailer 3
-
$544 USD
View
A
Retailer 4
-
$610 USD
View
B+
Retailer 5
-
$650 USD
View
A
Retailer 6
-
$672 USD
£529 GBP
View
B+
Retailer 7
-
$980 USD
View
B+
Retailer 8
-
$1,127 USD
View
B
Retailer 9
-
$1,900 USD
View
Most Expensive
B
MOH London
LG459199006 · Oct 29
$1,989 USD
£1,566 GBP
View
9 more retailers have this diamond
Prices start from $475 USDSave up to $1,514 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
1.89ct Cushion
$475 USD