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Marquise|Lab Grown|IGI

1.70ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG784645899

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG784645899

Diamond specifications and retailer prices

From $716 USD
As of October 27, 2026
Save $5,644 USD (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,360 USD at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

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 LG784645899 or 784645899. Listed at 15 retailers as of October 27, 2026, with prices from $716 to $6,360, a $5,644 spread on the same certified stone. Do Amore Diamonds lists it at $6,360. 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 angle37.6°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784645899
Dimensions11.74 × 6.15 × 3.95 mm
L/W Ratio1.91
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
11.74 mm6.15 mm1.70 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784645899
Side View
Table 61.0%Crown 37.6°Girdle: STK-THKPavilion 39.6°Culet: NoneDepth 64.2%

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: $6,360 USD|Low: $716 USD|High: $8,370 USD|Avg: $2,284 USD|-24.0%
Do Amore Diamonds
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
October 29, 2026
Retailer 10$716 USD
Retailer 15$779 USD
Retailer 12$987 USD
Retailer 9$1,015 USD
Retailer 4$1,035 USD
Retailer 7$1,066 USD
Retailer 5$1,108 USD
Retailer 11$1,348 USD
Retailer 2$1,545 USD
Retailer 13$2,045 USD
Retailer 14$2,577 USD
Retailer 3$2,640 USD
Retailer 8$3,454 USD
Retailer 6$4,870 USD
Do Amore Diamonds$6,360 USD

35 data points across 15 retailers

15 retailers$716 USD to $6,360 USD

A
Cheapest Retailer
-
$716 USD
A
Retailer 2
-
$779 USD
View
A
Retailer 3
-
$987 USD
View
A
Retailer 4
-
$1,015 USD
£799 GBP
View
A
Retailer 5
-
$1,035 USD
View
A
Retailer 6
-
$1,066 USD
View
Final sale: no returns
A
Retailer 7
-
$1,108 USD
View
A
Retailer 8
-
$1,348 USD
View
A
Retailer 9
-
$1,545 USD
€1,471 EUR
View
B+
Retailer 10
-
$2,045 USD
View
B+
Retailer 11
-
$2,577 USD
View
B+
Retailer 12
-
$2,640 USD
View
B
Retailer 13
-
$3,454 USD
£2,720 GBP
View
B
Retailer 14
-
$4,870 USD
View
Most Expensive
B
Do Amore Diamonds
27-3887A5746 · Oct 30
$6,360 USD
View
14 more retailers have this diamond
Prices start from $716 USDSave up to $5,644 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
$716 USD