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Cushion|Lab Grown|IGI

1.64ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG526288476

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG526288476

Diamond specifications and retailer prices

From ₹21,425 INR
$225 USD
As of October 28, 2026
Save ₹1,19,501 INR (85%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: ₹1,40,926 INR at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.64ct lab-grown cushion diamond

This 1.64ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG526288476 or 526288476. Listed at 13 retailers as of October 28, 2026, with prices from ₹21,425 to ₹1,40,926, a ₹1,19,501 spread on the same certified stone. Brilliant Earth lists it at ₹1,40,926. 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

1.64
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle29.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG526288476
Dimensions7.64 × 6.14 × 4.03 mm
L/W Ratio1.24
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
7.64 mm6.14 mm1.64 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG526288476
Side View
Table 61.5%Crown 34.9°Girdle: MED-STKPavilion 29.2°Culet: NoneDepth 65.6%

Caratlytics Score

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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: ₹1,40,926 INR|Low: ₹21,425 INR|High: ₹1,49,495 INR|Avg: ₹64,775 INR|-5.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 9₹21,425 INR
Retailer 4₹32,184 INR
Retailer 2₹39,193 INR
Retailer 5₹43,486 INR
Retailer 10₹48,098 INR
Retailer 8₹55,799 INR
Retailer 7₹60,846 INR
Retailer 6₹99,505 INR
Retailer 3₹1,11,739 INR
Brilliant Earth₹1,40,926 INR

43 data points across 10 retailers

13 retailers₹21,425 INR to ₹1,40,926 INR

A
Cheapest Retailer
-
₹21,425 INR
$225 USD
Final sale: no returns
B+
Retailer 2
-
₹32,184 INR
$338 USD
View
A
Retailer 3
-
₹39,193 INR
€392 EUR
View
A
Retailer 4
-
₹43,486 INR
£360 GBP
View
A
Retailer 5
-
₹48,098 INR
$505 USD
View
A
Retailer 6
-
₹53,895 INR
$566 USD
View
A
Retailer 7
-
₹55,799 INR
$586 USD
View
B+
Retailer 8
-
₹60,846 INR
$639 USD
View
B+
Retailer 9
-
₹81,509 INR
$856 USD
View
B
Retailer 10
-
₹99,505 INR
$1,045 USD
View
Price last confirmed 8 days ago
B
Retailer 11
-
₹1,11,739 INR
£924 GBP
View
B
Retailer 12
-
₹1,14,062 INR
$1,198 USD
View
Most Expensive
B
Brilliant Earth
10788641A · Oct 28
₹1,40,926 INR
$1,480 USD
View
12 more retailers have this diamond
Prices start from ₹21,425 INRSave up to ₹1,19,501 INR

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
1.64ct Cushion
₹21,425 INR