Marquise|Lab Grown|IGI

3.45ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG799696875

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG799696875

Diamond specifications and retailer prices

From $5,111 USD
As of October 30, 2026
Save $19,954 USD (80%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $25,065 USD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 3.45ct lab-grown marquise diamond

This 3.45ct 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 LG799696875 or 799696875. Listed at 28 retailers as of October 30, 2026, with prices from $5,111 to $25,065, a $19,954 spread on the same certified stone. Taylor and Hart lists it at $25,065. 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

3.45
Carat
E
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799696875
Dimensions15.24 × 7.93 × 5.02 mm
L/W Ratio1.92
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.24 mm7.93 mm3.45 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799696875
Side View
Table 59.0%Crown 36.7°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 63.3%

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 30
Current: $16,774 USD|Low: $5,111 USD|High: $38,820 USD|Avg: $13,204 USD|+1.9%
Retailer 1
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Retailer 21
Taylor and Hart
October 29, 2026
Retailer 6$5,111 USD
Retailer 9$5,525 USD
Retailer 8$5,903 USD
Retailer 3$6,545 USD
Retailer 20$6,545 USD
Retailer 17$6,853 USD
Retailer 19$7,073 USD
Retailer 4$8,576 USD
Retailer 12$9,034 USD
Retailer 5$10,302 USD
Retailer 2$10,660 USD
Retailer 16$11,344 USD
Retailer 18$12,470 USD
Retailer 15$14,520 USD
Retailer 21$16,189 USD
Retailer 1$16,774 USD
Retailer 11$16,974 USD
Retailer 14$18,138 USD
Retailer 10$18,671 USD
Retailer 13$18,893 USD
Taylor and Hart$25,065 USD
Retailer 7$38,820 USD

35 data points across 22 retailers

28 retailers$5,111 USD to $25,065 USD

A
Cheapest Retailer
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$5,111 USD
A
Retailer 2
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$5,525 USD
View
A
Retailer 3
-
$5,642 USD
View
A
Retailer 4
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$5,903 USD
CA$8,198 CAD
View
A
Retailer 5
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$5,913 USD
View
A
Retailer 6
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$6,545 USD
View
Retailer 7
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$6,545 USD
View
Price last confirmed 13 days ago
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Retailer 8
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$6,545 USD
View
B+
Retailer 9
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$6,853 USD
View
Final sale: no returns
B+
Retailer 10
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$7,073 USD
View
B+
Retailer 11
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$8,576 USD
View
B+
Retailer 12
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$9,034 USD
£7,113 GBP
View
B+
Retailer 13
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$10,302 USD
£8,112 GBP
View
B
Retailer 14
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$10,660 USD
View
B+
Retailer 15
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$11,344 USD
€10,804 EUR
View
B+
Retailer 16
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$12,470 USD
View
B
Retailer 17
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$13,474 USD
View
B
Retailer 18
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$14,520 USD
£11,433 GBP
View
B
Retailer 19
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$16,189 USD
View
B
Retailer 20
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$16,774 USD
ZAR 270,989 ZAR
View
B
Retailer 21
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$16,974 USD
View
B
Retailer 22
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$18,138 USD
View
B
Retailer 23
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$18,671 USD
View
B
Retailer 24
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$18,893 USD
View
B
Retailer 25
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$25,064 USD
View
Most Expensive
B
Taylor and Hart
J9B9Q7H · Oct 30
$25,065 USD
View
25 more retailers have this diamond
Prices start from $5,111 USDSave up to $19,954 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
3.45ct Marquise
$5,111 USD