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Marquise|Lab Grown|IGI

3.06ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG729507535

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG729507535

Diamond specifications and retailer prices

From $347 USD
As of November 4, 2026
Save $2,623 USD (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,970 USD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 3.06ct lab-grown marquise diamond

This 3.06ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG729507535 or 729507535. Listed at 19 retailers as of November 4, 2026, with prices from $347 to $2,970, a $2,623 spread on the same certified stone. Brilliant Earth lists it at $2,970. 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

3.06
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729507535
Dimensions15.38 × 7.67 × 4.56 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.38 mm7.67 mm3.06 ctD / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729507535
Side View
Table 64.0%Crown 33.5°Girdle: MED-STKPavilion 40°Culet: NoneDepth 59.5%

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: Nov 4
Current: $2,970 USD|Low: $342 USD|High: $2,970 USD|Avg: $1,088 USD
Brilliant Earth
Retailer 2
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Retailer 18
November 6, 2026
Retailer 16$347 USD
Retailer 15$388 USD
Retailer 3$402 USD
Retailer 12$430 USD
Retailer 5$473 USD
Retailer 14$580 USD
Retailer 11$582 USD
Retailer 7$676 USD
Retailer 18$691 USD
Retailer 10$752 USD
Retailer 2$765 USD
Retailer 9$1,078 USD
Retailer 6$1,371 USD
Retailer 17$1,382 USD
Retailer 4$1,539 USD
Retailer 13$1,675 USD
Retailer 8$2,670 USD
Brilliant Earth$2,970 USD

34 data points across 18 retailers

19 retailers$347 USD to $2,970 USD

A
Cheapest Retailer
-
$347 USD
A
Retailer 2
-
$388 USD
View
Final sale: no returns
A
Retailer 3
-
$402 USD
View
A
Retailer 4
-
$430 USD
View
Retailer 5
-
$436 USD
View
Price last confirmed 12 days ago
A
Retailer 6
-
$473 USD
View
A
Retailer 7
-
$580 USD
View
A
Retailer 8
-
$582 USD
View
Retailer 9
-
$676 USD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
$691 USD
View
Retailer 11
-
$752 USD
View
Price last confirmed 11 days ago
A
Retailer 12
-
$765 USD
View
B+
Retailer 13
-
$1,078 USD
View
B+
Retailer 14
-
$1,371 USD
View
B+
Retailer 15
-
$1,382 USD
View
B
Retailer 16
-
$1,539 USD
View
B+
Retailer 17
-
$1,675 USD
View
Retailer 18
-
$2,670 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
16747576A · Nov 4
$2,970 USD
View
18 more retailers have this diamond
Prices start from $347 USDSave up to $2,623 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
3.06ct Marquise
$347 USD