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Marquise|Lab Grown|IGI

1.65ct E VS1 Marquise Lab Grown Diamond

ID • E/VS1 • IGI LG828668635

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG828668635

Diamond specifications and retailer prices

From $257 USD
As of October 27, 2026
Save $1,213 USD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,470 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.65ct lab-grown marquise diamond

This 1.65ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG828668635 or 828668635. Listed at 14 retailers as of October 27, 2026, with prices from $257 to $1,470, a $1,213 spread on the same certified stone. Brilliant Earth lists it at $1,470. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.65
Carat
E
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828668635
Dimensions11.60 × 6.15 × 3.93 mm
L/W Ratio1.89
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.60 mm6.15 mm1.65 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828668635
Side View
Table 61.0%Crown 37.4°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 63.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $1,470 USD|Low: $257 USD|High: $1,580 USD|Avg: $984 USD|-7.0%
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
October 29, 2026
Retailer 11$257 USD
Retailer 9$298 USD
Retailer 4$392 USD
Retailer 6$480 USD
Retailer 8$526 USD
Retailer 7$744 USD
Retailer 10$980 USD
Retailer 3$1,025 USD
Retailer 13$1,165 USD
Retailer 2$1,285 USD
Retailer 5$1,343 USD
Retailer 12$1,370 USD
Brilliant Earth$1,470 USD

28 data points across 13 retailers

14 retailers$257 USD to $1,470 USD

A
Cheapest Retailer
-
$257 USD
A
Retailer 2
-
$298 USD
View
A
Retailer 3
-
$392 USD
£309 GBP
View
Price last confirmed 14 days ago
A
Retailer 4
-
$480 USD
View
A
Retailer 5
-
$526 USD
€501 EUR
View
B+
Retailer 6
-
$740 USD
View
A
Retailer 7
-
$744 USD
A$1,144 AUD
View
B+
Retailer 8
-
$980 USD
View
B+
Retailer 9
-
$1,025 USD
View
B+
Retailer 10
-
$1,165 USD
View
B
Retailer 11
-
$1,285 USD
£1,012 GBP
View
B
Retailer 12
-
$1,343 USD
SGD 1,815 SGD
View
Price last confirmed 16 days ago
B
Retailer 13
-
$1,370 USD
View
Most Expensive
B
Brilliant Earth
21084397A · Oct 28
$1,470 USD
View
13 more retailers have this diamond
Prices start from $257 USDSave up to $1,213 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
1.65ct Marquise
$257 USD