Marquise|Lab Grown|IGI

4.54ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG812649300

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG812649300

Diamond specifications and retailer prices

From $9,104 USD
As of October 31, 2026
Save $28,322 USD (76%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $37,426 USD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.54ct lab-grown marquise diamond

This 4.54ct 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 LG812649300 or 812649300. Listed at 23 retailers as of October 31, 2026, with prices from $9,104 to $37,426, a $28,322 spread on the same certified stone. Taylor and Hart lists it at $37,426. 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

4.54
Carat
E
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812649300
Dimensions17.65 × 8.59 × 5.27 mm
L/W Ratio2.05
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.65 mm8.59 mm4.54 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812649300
Side View
Table 61.0%Crown 37°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.4%

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 31
Current: $19,484 USD|Low: $8,220 USD|High: $57,620 USD|Avg: $18,970 USD|+1.0%
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Retailer 28
Taylor and Hart
November 1, 2026
Retailer 15$8,947 USD
Retailer 8$9,104 USD
Retailer 3$9,259 USD
Retailer 17$9,692 USD
Retailer 25$9,828 USD
Retailer 14$10,811 USD
Retailer 18$10,811 USD
Retailer 22$11,025 USD
Retailer 23$11,025 USD
Retailer 2$11,725 USD
Retailer 24$11,929 USD
Retailer 16$12,158 USD
Retailer 12$12,362 USD
Retailer 27$14,722 USD
Retailer 28$16,707 USD
Retailer 13$17,110 USD
Retailer 20$17,126 USD
Retailer 9$17,770 USD
Retailer 4$18,670 USD
Retailer 1$19,484 USD
Retailer 10$20,128 USD
Retailer 5$23,120 USD
Retailer 26$26,403 USD
Retailer 19$28,266 USD
Retailer 7$30,926 USD
Retailer 11$31,339 USD
Taylor and Hart$37,426 USD
Retailer 21$54,545 USD
Retailer 6$57,620 USD

22 data points across 29 retailers

23 retailers$9,104 USD to $37,426 USD

Retailer 1
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$8,947 USD
Price last confirmed 30 days ago
A
Retailer 2
-
$9,104 USD
View
A
Retailer 3
-
$9,259 USD
View
A
Retailer 4
-
$9,828 USD
CA$13,650 CAD
View
A
Retailer 5
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$10,552 USD
View
Retailer 6
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$10,811 USD
View
Price last confirmed 29 days ago
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Retailer 7
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$11,025 USD
View
A
Retailer 8
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$11,025 USD
View
A
Retailer 9
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$11,929 USD
View
Final sale: no returns
Retailer 10
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$12,158 USD
View
Price last confirmed 31 days ago
A
Retailer 11
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$12,362 USD
View
B+
Retailer 12
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$14,722 USD
£11,592 GBP
View
B+
Retailer 13
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$16,707 USD
View
B+
Retailer 14
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$17,770 USD
£13,992 GBP
View
B+
Retailer 15
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$18,670 USD
View
B+
Retailer 16
-
$19,484 USD
£15,342 GBP
View
B+
Retailer 17
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$20,128 USD
View
B
Retailer 18
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$23,120 USD
View
B
Retailer 19
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$26,403 USD
ZAR 426,548 ZAR
View
B
Retailer 20
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$30,926 USD
View
B
Retailer 21
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$31,339 USD
View
Most Expensive
B
Taylor and Hart
5S5SWTS · Oct 31
$37,426 USD
View
21 more retailers have this diamond
Prices start from $9,104 USDSave up to $28,322 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
4.54ct Marquise
$9,104 USD