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Marquise|Lab Grown|IGI

3.68ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG662447409

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG662447409

Diamond specifications and retailer prices

From $440 USD
As of November 2, 2026
Save $1,316 USD (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,756 USD at NZ Jewellers · As of November 1, 2026
View at NZ Jewellers

About this 3.68ct lab-grown marquise diamond

This 3.68ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG662447409 or 662447409. Listed at 12 retailers as of November 1, 2026, with prices from $440 to $1,756, a $1,316 spread on the same certified stone. NZ Jewellers lists it at $1,756. 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

3.68
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG662447409
Dimensions16.02 × 8.03 × 5.00 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
16.02 mm8.03 mm3.68 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG662447409
Side View
Table 61.0%Crown 35.5°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.3%

Caratlytics Score

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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 2
Current: $1,756 USD|Low: $440 USD|High: $6,060 USD|Avg: $1,668 USD
NZ Jewellers
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
November 2, 2026
Retailer 11$440 USD
Retailer 5$493 USD
Retailer 12$546 USD
Retailer 15$602 USD
Retailer 2$669 USD
Retailer 13$690 USD
Retailer 3$857 USD
Retailer 14$876 USD
Retailer 9$895 USD
Retailer 6$1,219 USD
Retailer 16$1,402 USD
Retailer 10$1,468 USD
NZ Jewellers$1,756 USD
Retailer 4$3,145 USD
Retailer 7$4,576 USD
Retailer 8$6,060 USD

6 data points across 16 retailers

12 retailers$440 USD to $1,756 USD

A
Cheapest Retailer
-
$440 USD
A
Retailer 2
-
$493 USD
View
A
Retailer 3
-
$546 USD
View
A
Retailer 4
-
$602 USD
HK$4,700 HKD
View
A
Retailer 5
-
$669 USD
£527 GBP
View
A
Retailer 6
-
$690 USD
View
B+
Retailer 7
-
$857 USD
View
A
Retailer 8
-
$876 USD
View
A
Retailer 9
-
$895 USD
£705 GBP
View
B+
Retailer 10
-
$1,402 USD
View
B+
Retailer 11
-
$1,468 USD
View
Most Expensive
B+
NZ Jewellers
a104e5fa-3b93-4d6c-af46-e154098216fb · Nov 1
$1,756 USD
View
11 more retailers have this diamond
Prices start from $440 USDSave up to $1,316 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
3.68ct Marquise
$440 USD