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Marquise|Lab Grown|IGI

2.80ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG778698703

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG778698703

Diamond specifications and retailer prices

From $342 USD
As of October 30, 2026
Save $2,023 USD (86%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,365 USD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 2.8ct lab-grown marquise diamond

This 2.8ct lab-grown marquise sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG778698703 or 778698703. Listed at 13 retailers as of October 28, 2026, with prices from $342 to $2,365, a $2,023 spread on the same certified stone. Rare Carat lists it at $2,365. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.80
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778698703
Dimensions14.60 × 7.29 × 4.66 mm
L/W Ratio2.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.60 mm7.29 mm2.80 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778698703
Side View
Table 58.0%Crown 36.1°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 63.9%

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 30
Current: $2,365 USD|Low: $342 USD|High: $2,365 USD|Avg: $910 USD
Rare Carat
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 30, 2026
Retailer 2$342 USD
Retailer 5$397 USD
Retailer 9$424 USD
Retailer 13$474 USD
Retailer 7$532 USD
Retailer 10$575 USD
Retailer 4$682 USD
Retailer 12$731 USD
Retailer 8$761 USD
Retailer 3$968 USD
Retailer 6$978 USD
Retailer 14$1,363 USD
Retailer 11$1,708 USD
Rare Carat$2,365 USD

3 data points across 14 retailers

13 retailers$342 USD to $2,365 USD

A
Cheapest Retailer
-
$342 USD
A
Retailer 2
-
$397 USD
View
A
Retailer 3
-
$424 USD
View
A
Retailer 4
-
$474 USD
HK$3,700 HKD
View
A
Retailer 5
-
$532 USD
£419 GBP
View
A
Retailer 6
-
$575 USD
View
B+
Retailer 7
-
$682 USD
View
A
Retailer 8
-
$731 USD
View
A
Retailer 9
-
$761 USD
£599 GBP
View
B+
Retailer 10
-
$968 USD
View
B+
Retailer 11
-
$1,363 USD
View
B
Retailer 12
-
$1,708 USD
£1,345 GBP
View
Most Expensive
B
Rare Carat
KI7036987KF778 · Oct 28
$2,365 USD
View
12 more retailers have this diamond
Prices start from $342 USDSave up to $2,023 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
2.80ct Marquise
$342 USD