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Marquise|Lab Grown|IGI

3.51ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG717586084

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG717586084

Diamond specifications and retailer prices

From €6,269 EUR
$7,004 USD
As of October 30, 2026
Save €18,537 EUR (75%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: €24,806 EUR at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 3.51ct lab-grown marquise diamond

This 3.51ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG717586084 or 717586084. Listed at 24 retailers as of October 30, 2026, with prices from €6,269 to €24,806, a €18,537 spread on the same certified stone. Taylor and Hart lists it at €24,806. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.51
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG717586084
Dimensions15.17 × 7.77 × 5.08 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.17 mm7.77 mm3.51 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG717586084
Side View
Table 56.0%Crown 36.4°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 65.4%

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 30
Current: €11,144 EUR|Low: €6,269 EUR|High: €26,320 EUR|Avg: €10,224 EUR|-7.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Taylor and Hart
October 30, 2026
Retailer 7€6,269 EUR
Retailer 5€6,511 EUR
Retailer 2€6,520 EUR
Retailer 11€6,712 EUR
Retailer 19€6,834 EUR
Retailer 4€7,237 EUR
Retailer 6€7,273 EUR
Retailer 9€7,273 EUR
Retailer 20€7,865 EUR
Retailer 8€8,633 EUR
Retailer 18€8,813 EUR
Retailer 13€8,854 EUR
Retailer 14€9,124 EUR
Retailer 10€10,408 EUR
Retailer 17€10,766 EUR
Retailer 1€11,144 EUR
Retailer 16€11,749 EUR
Retailer 3€13,276 EUR
Retailer 15€14,356 EUR
Retailer 12€16,886 EUR
Taylor and Hart€24,806 EUR

33 data points across 21 retailers

24 retailers€6,269 EUR to €24,806 EUR

A
Cheapest Retailer
-
€6,269 EUR
$7,004 USD
B+
Retailer 2
-
€6,511 EUR
$7,274 USD
View
A
Retailer 3
-
€6,520 EUR
$7,284 USD
View
A
Retailer 4
-
€6,712 EUR
$7,499 USD
View
A
Retailer 5
-
€6,834 EUR
$7,635 USD
View
B+
Retailer 6
-
€7,237 EUR
$8,085 USD
View
B+
Retailer 7
-
€7,273 EUR
$8,125 USD
View
Retailer 8
-
€7,273 EUR
$8,125 USD
View
Price last confirmed 14 days ago
B+
Retailer 9
-
€7,865 EUR
$8,787 USD
View
B+
Retailer 10
-
€8,633 EUR
$9,645 USD
View
B+
Retailer 11
-
€8,813 EUR
$9,846 USD
View
Final sale: no returns
Retailer 12
-
€8,854 EUR
£7,789 GBP
View
Price last confirmed 29 days ago
B+
Retailer 13
-
€9,124 EUR
£8,026 GBP
View
Retailer 14
-
€9,949 EUR
$11,115 USD
View
Price last confirmed 31 days ago
B+
Retailer 15
-
€10,408 EUR
£9,156 GBP
View
Retailer 16
-
€10,669 EUR
$11,920 USD
View
Price last confirmed 9 days ago
B
Retailer 17
-
€10,766 EUR
$12,028 USD
View
B+
Retailer 18
-
€11,144 EUR
$12,450 USD
View
B+
Retailer 19
-
€11,749 EUR
View
B+
Retailer 20
-
€12,318 EUR
$13,762 USD
View
B+
Retailer 21
-
€13,276 EUR
$14,832 USD
View
B
Retailer 22
-
€14,356 EUR
£12,629 GBP
View
B
Retailer 23
-
€16,886 EUR
ZAR 304,774 ZAR
View
Most Expensive
B
Taylor and Hart
HWQ20GM · Oct 30
€24,806 EUR
$27,714 USD
View
23 more retailers have this diamond
Prices start from €6,269 EURSave up to €18,537 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
3.51ct Marquise
€6,269 EUR