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Marquise|Lab Grown|IGI

1.66ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG807673684

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG807673684

Diamond specifications and retailer prices

From ₹18,792 INR
$198 USD
As of October 27, 2026
Save ₹98,896 INR (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: ₹1,17,688 INR at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.66ct lab-grown marquise diamond

This 1.66ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG807673684 or 807673684. Listed at 17 retailers as of October 27, 2026, with prices from ₹18,792 to ₹1,17,688, a ₹98,896 spread on the same certified stone. Brilliant Earth lists it at ₹1,17,688. 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

1.66
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG807673684
Dimensions12.86 × 6.07 × 3.68 mm
L/W Ratio2.12
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.86 mm6.07 mm1.66 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG807673684
Side View
Table 63.0%Crown 35.8°Girdle: MED-THKPavilion 39.1°Culet: NoneDepth 60.6%

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 27
Current: ₹1,17,688 INR|Low: ₹18,792 INR|High: ₹1,29,506 INR|Avg: ₹59,341 INR|-2.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 8₹18,792 INR
Retailer 5₹20,975 INR
Retailer 3₹21,829 INR
Retailer 18₹23,348 INR
Retailer 16₹30,050 INR
Retailer 7₹31,510 INR
Retailer 14₹39,065 INR
Retailer 13₹42,497 INR
Retailer 10₹45,082 INR
Retailer 11₹51,536 INR
Retailer 4₹55,427 INR
Retailer 2₹58,844 INR
Retailer 17₹75,074 INR
Retailer 9₹80,157 INR
Retailer 12₹98,706 INR
Retailer 15₹1,09,326 INR
Retailer 6₹1,12,813 INR
Brilliant Earth₹1,17,688 INR

42 data points across 18 retailers

17 retailers₹18,792 INR to ₹1,17,688 INR

A
Cheapest Retailer
-
₹18,792 INR
$198 USD
Retailer 2
-
₹21,829 INR
$230 USD
View
Price last confirmed 8 days ago
Retailer 3
-
₹23,348 INR
$246 USD
View
Price last confirmed 8 days ago
Retailer 4
-
₹30,050 INR
£249 GBP
View
Price last confirmed 16 days ago
B+
Retailer 5
-
₹31,510 INR
$332 USD
View
A
Retailer 6
-
₹39,065 INR
€392 EUR
View
Retailer 7
-
₹41,677 INR
£346 GBP
View
Price last confirmed 13 days ago
A
Retailer 8
-
₹42,497 INR
£353 GBP
View
A
Retailer 9
-
₹51,536 INR
$543 USD
View
Retailer 10
-
₹55,427 INR
$584 USD
View
Price last confirmed 7 days ago
B+
Retailer 11
-
₹58,844 INR
$620 USD
View
Retailer 12
-
₹75,074 INR
$791 USD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
₹80,157 INR
$845 USD
View
B
Retailer 14
-
₹98,706 INR
$1,040 USD
View
B
Retailer 15
-
₹1,09,326 INR
£907 GBP
View
Retailer 16
-
₹1,12,813 INR
$1,189 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
20682223A · Nov 2
₹1,17,688 INR
$1,240 USD
View
16 more retailers have this diamond
Prices start from ₹18,792 INRSave up to ₹98,896 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
1.66ct Marquise
₹18,792 INR