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Cushion|Lab Grown|IGI

1.59ct G SI1 Cushion Lab Grown Diamond

ID • G/SI1 • IGI LG620424322

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG620424322

Diamond specifications and retailer prices

From $265 USD
As of October 28, 2026
Save $980 USD (79%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,245 USD at Michael Trio · As of October 29, 2026
View at Michael Trio

About this 1.59ct lab-grown cushion diamond

This 1.59ct lab-grown cushion sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG620424322 or 620424322. Listed at 6 retailers as of October 28, 2026, with prices from $265 to $1,245, a $980 spread on the same certified stone. Michael Trio lists it at $1,245. 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

1.59
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620424322
Dimensions6.92 × 6.80 × 4.58 mm
L/W Ratio1.02
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
6.92 mm6.80 mm1.59 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620424322
Side View
Table 60.0%Crown 34.2°Girdle: THN-STKPavilion 40.2°Culet: NoneDepth 67.4%

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 28
Current: $1,245 USD|Low: $265 USD|High: $1,245 USD|Avg: $712 USD
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 5, 2026
Retailer 4$265 USD
Retailer 5$425 USD
Retailer 6$435 USD
Retailer 2$805 USD
Retailer 3$1,080 USD
Michael Trio$1,245 USD

3 data points across 6 retailers

6 retailers$265 USD to $1,245 USD

A
Cheapest Retailer
-
$265 USD
Final sale: no returns
A
Retailer 2
-
$425 USD
View
A
Retailer 3
-
$435 USD
HK$3,400 HKD
View
B+
Retailer 4
-
$805 USD
View
Price last confirmed 7 days ago
B
Retailer 5
-
$1,080 USD
View
Most Expensive
B
Michael Trio
3292028890 · Oct 29
$1,245 USD
SGD 1,682 SGD
View
5 more retailers have this diamond
Prices start from $265 USDSave up to $980 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
1.59ct Cushion
$265 USD