CaratHunter
Plans
Marquise|Lab Grown|IGI

3.71ct D IF Marquise Lab Grown Diamond

VG • D/IF • IGI LG697509200

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG697509200

Diamond specifications and retailer prices

From $6,171 USD
As of October 31, 2026
Save $4,419 USD (42%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $10,590 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.71ct lab-grown marquise diamond

This 3.71ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG697509200 or 697509200. Listed at 4 retailers as of October 31, 2026, with prices from $6,171 to $10,590, a $4,419 spread on the same certified stone. Brilliant Earth lists it at $10,590. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.71
Carat
D
Color
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG697509200
Dimensions15.34 × 7.95 × 5.21 mm
L/W Ratio1.93
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
15.34 mm7.95 mm3.71 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG697509200
Side View
Table 61.0%Crown 34.8°Girdle: MED-STKPavilion 41.9°Culet: NoneDepth 65.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $10,590 USD|Low: $6,171 USD|High: $25,844 USD|Avg: $15,171 USD|-36.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 30, 2026
Retailer 3$6,171 USD
Retailer 2$8,220 USD
Brilliant Earth$10,590 USD
Retailer 5$19,931 USD
Retailer 4$25,844 USD

8 data points across 5 retailers

4 retailers$6,171 USD to $10,590 USD

A
Cheapest Retailer
-
$6,171 USD
Retailer 2
-
$7,800 USD
View
Price last confirmed 57 days ago
B+
Retailer 3
-
$8,220 USD
View
Most Expensive
B
Brilliant Earth
21403662Y · Oct 31
$10,590 USD
View
3 more retailers have this diamond
Prices start from $6,171 USDSave up to $4,419 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
3.71ct Marquise
$6,171 USD