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Marquise|Lab Grown|IGI

2.91ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG629454432

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG629454432

Diamond specifications and retailer prices

From $3,498 USD
As of October 31, 2026
Save $14,038 USD (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $26,470 USD at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 2.91ct lab-grown marquise diamond

This 2.91ct lab-grown marquise sits in the two to three carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG629454432 or 629454432. Listed at 15 retailers as of October 30, 2026, with a 401% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

2.91
Carat
E
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG629454432
Dimensions15.08 × 7.39 × 4.70 mm
L/W Ratio2.04
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
15.08 mm7.39 mm2.91 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG629454432
Side View
Table 57.0%Crown 35.6°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 63.6%

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 31
Current: $26,470 USD|Low: $3,076 USD|High: $26,470 USD|Avg: $9,090 USD
Do Amore Diamonds
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
October 31, 2026
Retailer 11$3,279 USD
Retailer 4$3,498 USD
Retailer 18$4,207 USD
Retailer 5$4,308 USD
Retailer 3$4,520 USD
Retailer 8$5,639 USD
Retailer 9$5,901 USD
Retailer 2$5,918 USD
Retailer 13$6,376 USD
Retailer 19$6,490 USD
Retailer 7$6,919 USD
Retailer 12$7,170 USD
Retailer 15$10,253 USD
Retailer 16$11,182 USD
Retailer 14$12,706 USD
Retailer 6$12,883 USD
Retailer 17$17,088 USD
Retailer 10$17,536 USD
Do Amore Diamonds$26,470 USD

15 data points across 19 retailers

15 retailers$3,498 USD to $17,536 USD

A
Cheapest Retailer
-
$3,498 USD
A
Retailer 2
-
$4,207 USD
View
A
Retailer 3
-
$4,308 USD
View
Final sale: no returns
A
Retailer 4
-
$4,520 USD
View
B+
Retailer 5
-
$5,918 USD
View
B+
Retailer 6
-
$6,376 USD
£5,020 GBP
View
B+
Retailer 7
-
$6,919 USD
£5,448 GBP
View
B+
Retailer 8
-
$7,170 USD
View
B
Retailer 9
-
$10,253 USD
£8,073 GBP
View
B
Retailer 10
-
$11,182 USD
View
B
Retailer 11
-
$12,706 USD
ZAR 205,266 ZAR
View
B
Retailer 12
-
$12,883 USD
View
B
Retailer 13
-
$17,088 USD
SGD 23,092 SGD
View
B
Retailer 14
-
$17,536 USD
View
Most Expensive
Do Amore Diamonds
27-0B7BA0380 · Oct 30
$26,470 USD
View
Price under review
14 more retailers have this diamond
Prices start from $3,498 USDSave up to $14,038 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
2.91ct Marquise
$3,498 USD