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Cushion|Lab Grown|IGI

3.18ct D SI1 Cushion Lab Grown Diamond

EX • D/SI1 • IGI LG639415932

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG639415932

Diamond specifications and retailer prices

From ₹55,546 INR
$585 USD
As of October 31, 2026
Save ₹1,50,175 INR (73%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: ₹2,05,721 INR at MOH London · As of October 29, 2026
View at MOH London

About this 3.18ct lab-grown cushion diamond

This 3.18ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG639415932 or 639415932. Listed at 11 retailers as of October 29, 2026, with prices from ₹55,546 to ₹2,05,721, a ₹1,50,175 spread on the same certified stone. MOH London lists it at ₹2,05,721. 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

3.18
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639415932
Dimensions8.76 × 8.65 × 5.53 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.76 mm8.65 mm3.18 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG639415932
Side View
Table 63.0%Crown 34.6°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 63.9%

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 31
Current: ₹2,05,721 INR|Low: ₹55,546 INR|High: ₹2,59,864 INR|Avg: ₹1,06,219 INR|-19.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 3₹55,546 INR
Retailer 9₹55,736 INR
Retailer 8₹60,768 INR
Retailer 5₹68,839 INR
Retailer 6₹72,637 INR
Retailer 4₹84,045 INR
Retailer 7₹84,316 INR
Retailer 2₹91,629 INR
Retailer 10₹1,59,611 INR
Retailer 11₹1,76,711 INR
MOH London₹2,05,721 INR

44 data points across 11 retailers

11 retailers₹55,546 INR to ₹2,05,721 INR

A
Cheapest Retailer
-
₹55,546 INR
$585 USD
Final sale: no returns
Retailer 2
-
₹55,736 INR
$587 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
₹60,768 INR
HK$5,000 HKD
View
A
Retailer 4
-
₹68,839 INR
$725 USD
View
B+
Retailer 5
-
₹72,637 INR
$765 USD
View
A
Retailer 6
-
₹84,045 INR
€843 EUR
View
A
Retailer 7
-
₹84,316 INR
$888 USD
View
A
Retailer 8
-
₹91,629 INR
£760 GBP
View
B
Retailer 9
-
₹1,59,611 INR
$1,681 USD
View
B+
Retailer 10
-
₹1,76,711 INR
SGD 2,515 SGD
View
Most Expensive
B
MOH London
LG639415932 · Oct 29
₹2,05,721 INR
£1,706 GBP
View
10 more retailers have this diamond
Prices start from ₹55,546 INRSave up to ₹1,50,175 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
3.18ct Cushion
₹55,546 INR