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Marquise|Lab Grown|IGI

3.00ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG780663620

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG780663620

Diamond specifications and retailer prices

From $4,719 AUD
$3,315 USD
As of October 31, 2026
Save $24,244 AUD (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $28,963 AUD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 3ct lab-grown marquise diamond

This 3ct 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 LG780663620 or 780663620. Listed at 13 retailers as of October 31, 2026, with prices from $4,719 to $28,963, a $24,244 spread on the same certified stone. Blue Nile lists it at $28,963. 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

3.00
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780663620
Dimensions14.54 × 7.49 × 4.73 mm
L/W Ratio1.94
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
14.54 mm7.49 mm3.00 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780663620
Side View
Table 59.0%Crown 36.7°Girdle: STK-THKPavilion 39.7°Culet: NoneDepth 63.2%

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 31
Current: $28,963 AUD|Low: $4,719 AUD|High: $32,011 AUD|Avg: $13,360 AUD|-9.5%
Blue Nile
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
October 31, 2026
Retailer 10$4,719 AUD
Retailer 6$4,887 AUD
Retailer 12$5,800 AUD
Retailer 2$8,750 AUD
Retailer 11$10,193 AUD
Retailer 14$10,214 AUD
Retailer 8$10,889 AUD
Retailer 9$14,344 AUD
Retailer 3$15,255 AUD
Retailer 5$15,432 AUD
Retailer 7$15,464 AUD
Retailer 13$17,852 AUD
Retailer 4$23,645 AUD
Blue Nile$28,963 AUD

41 data points across 14 retailers

13 retailers$4,719 AUD to $28,963 AUD

A
Cheapest Retailer
-
$4,719 AUD
$3,315 USD
A
Retailer 2
-
$5,800 AUD
$4,074 USD
View
B+
Retailer 3
-
$8,750 AUD
£4,840 GBP
View
B+
Retailer 4
-
$10,193 AUD
$7,160 USD
View
B+
Retailer 5
-
$10,214 AUD
$7,175 USD
View
B+
Retailer 6
-
$10,889 AUD
€7,285 EUR
View
B+
Retailer 7
-
$14,344 AUD
£7,934 GBP
View
B
Retailer 8
-
$15,255 AUD
$10,716 USD
View
B
Retailer 9
-
$15,432 AUD
$10,840 USD
View
B
Retailer 10
-
$15,464 AUD
ZAR 175,491 ZAR
View
Retailer 11
-
$17,852 AUD
$12,540 USD
View
Price last confirmed 7 days ago
B
Retailer 12
-
$23,645 AUD
$16,610 USD
View
Most Expensive
B
Blue Nile
29977966 · Oct 31
$28,963 AUD
$20,345 USD
View
12 more retailers have this diamond
Prices start from $4,719 AUDSave up to $24,244 AUD

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
3.00ct Marquise
$4,719 AUD