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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 €807 EUR
$902 USD
As of October 30, 2026
Save €2,683 EUR (77%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €3,491 EUR 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 €807 to €3,491, a €2,683 spread on the same certified stone. Brilliant Earth lists it at €3,491. 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
Colour
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: €3,491 EUR|Low: €807 EUR|High: €4,574 EUR|Avg: €2,267 EUR|-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 31, 2026
Retailer 4€807 EUR
Retailer 19€878 EUR
Retailer 6€903 EUR
Retailer 16€936 EUR
Retailer 5€1,088 EUR
Retailer 15€1,092 EUR
Retailer 20€1,309 EUR
Retailer 2€1,441 EUR
Retailer 13€1,493 EUR
Retailer 7€1,501 EUR
Retailer 14€1,721 EUR
Retailer 10€2,083 EUR
Retailer 3€2,592 EUR
Retailer 17€2,632 EUR
Retailer 8€2,778 EUR
Retailer 9€3,073 EUR
Retailer 11€3,144 EUR
Retailer 18€3,180 EUR
Retailer 12€3,253 EUR
Brilliant Earth€3,491 EUR

36 data points across 20 retailers

21 retailers€807 EUR to €3,491 EUR

A
Cheapest Retailer
-
€807 EUR
$902 USD
A
Retailer 2
-
€878 EUR
$981 USD
View
A
Retailer 3
-
€903 EUR
$1,009 USD
View
Final sale: no returns
A
Retailer 4
-
€936 EUR
$1,046 USD
View
A
Retailer 5
-
€1,088 EUR
HK$9,500 HKD
View
A
Retailer 6
-
€1,092 EUR
$1,220 USD
View
Retailer 7
-
€1,172 EUR
$1,309 USD
View
Price last confirmed 14 days ago
A
Retailer 8
-
€1,309 EUR
$1,462 USD
View
A
Retailer 9
-
€1,441 EUR
£1,268 GBP
View
A
Retailer 10
-
€1,493 EUR
View
A
Retailer 11
-
€1,501 EUR
$1,677 USD
View
B+
Retailer 12
-
€1,721 EUR
ZAR 31,066 ZAR
View
B+
Retailer 13
-
€2,083 EUR
$2,327 USD
View
B+
Retailer 14
-
€2,592 EUR
£2,280 GBP
View
B
Retailer 15
-
€2,632 EUR
$2,941 USD
View
B+
Retailer 16
-
€2,778 EUR
$3,104 USD
View
B
Retailer 17
-
€3,073 EUR
$3,433 USD
View
B
Retailer 18
-
€3,144 EUR
SGD 4,747 SGD
View
B
Retailer 19
-
€3,180 EUR
£2,797 GBP
View
B
Retailer 20
-
€3,253 EUR
$3,634 USD
View
Most Expensive
B
Brilliant Earth
20860257A · Oct 30
€3,491 EUR
$3,900 USD
View
20 more retailers have this diamond
Prices start from €807 EURSave up to €2,683 EUR

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
€807 EUR