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Marquise|Lab Grown|IGI

1.70ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG817693361

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG817693361

Diamond specifications and retailer prices

From $902 USD
As of October 30, 2026
Save $2,998 USD (77%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,900 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.7ct lab-grown marquise diamond

This 1.7ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG817693361 or 817693361. Listed at 21 retailers as of October 30, 2026, with prices from $902 to $3,900, a $2,998 spread on the same certified stone. Brilliant Earth lists it at $3,900. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.70
Carat
E
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817693361
Dimensions11.99 × 6.28 × 3.93 mm
L/W Ratio1.91
Girdle conditionFaceted
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
11.99 mm6.28 mm1.70 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817693361
Side View
Table 57.0%Crown 35.6°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.6%

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 30
Current: $3,900 USD|Low: $902 USD|High: $5,110 USD|Avg: $2,482 USD|-23.7%
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
Retailer 19
Retailer 20
October 30, 2026
Retailer 4$902 USD
Retailer 19$981 USD
Retailer 6$1,009 USD
Retailer 16$1,046 USD
Retailer 5$1,216 USD
Retailer 15$1,220 USD
Retailer 20$1,462 USD
Retailer 2$1,610 USD
Retailer 13$1,668 USD
Retailer 7$1,677 USD
Retailer 14$1,923 USD
Retailer 10$2,327 USD
Retailer 3$2,896 USD
Retailer 17$2,941 USD
Retailer 8$3,104 USD
Retailer 9$3,433 USD
Retailer 11$3,513 USD
Retailer 18$3,552 USD
Retailer 12$3,634 USD
Brilliant Earth$3,900 USD

35 data points across 20 retailers

21 retailers$902 USD to $3,900 USD

A
Cheapest Retailer
-
$902 USD
A
Retailer 2
-
$981 USD
View
A
Retailer 3
-
$1,009 USD
View
Final sale: no returns
A
Retailer 4
-
$1,046 USD
View
A
Retailer 5
-
$1,216 USD
HK$9,500 HKD
View
A
Retailer 6
-
$1,220 USD
View
Retailer 7
-
$1,309 USD
View
Price last confirmed 13 days ago
A
Retailer 8
-
$1,462 USD
View
A
Retailer 9
-
$1,610 USD
£1,268 GBP
View
A
Retailer 10
-
$1,668 USD
€1,589 EUR
View
A
Retailer 11
-
$1,677 USD
View
B+
Retailer 12
-
$1,923 USD
ZAR 31,066 ZAR
View
B+
Retailer 13
-
$2,327 USD
View
B+
Retailer 14
-
$2,896 USD
£2,280 GBP
View
B
Retailer 15
-
$2,941 USD
View
B+
Retailer 16
-
$3,104 USD
View
B
Retailer 17
-
$3,433 USD
View
B
Retailer 18
-
$3,513 USD
SGD 4,747 SGD
View
B
Retailer 19
-
$3,552 USD
£2,797 GBP
View
B
Retailer 20
-
$3,634 USD
View
Most Expensive
B
Brilliant Earth
20860257A · Oct 30
$3,900 USD
View
20 more retailers have this diamond
Prices start from $902 USDSave up to $2,998 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
1.70ct Marquise
$902 USD