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Marquise|Lab Grown|IGI

4.00ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG778629621

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG778629621

Diamond specifications and retailer prices

From $959 SGD
$750 USD
As of November 1, 2026
Save $2,302 SGD (71%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $3,261 SGD at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 4ct lab-grown marquise diamond

This 4ct 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 LG778629621 or 778629621. Listed at 6 retailers as of November 1, 2026, with prices from $959 to $3,261, a $2,302 spread on the same certified stone. Rare Carat lists it at $3,261. 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

4.00
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778629621
Dimensions15.95 × 8.30 × 5.00 mm
L/W Ratio1.92
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.95 mm8.30 mm4.00 ctF / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778629621
Side View
Table 64.0%Crown 33.8°Girdle: MED-STKPavilion 39°Culet: NoneDepth 60.2%

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: Nov 1
Current: $1,173 SGD|Low: $959 SGD|High: $2,657 SGD|Avg: $1,488 SGD|+1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 3$959 SGD
Retailer 1$1,173 SGD
Retailer 4$1,242 SGD
Retailer 5$1,436 SGD
Retailer 2$2,639 SGD

38 data points across 5 retailers

6 retailers$959 SGD to $3,261 SGD

B+
Cheapest Retailer
-
$959 SGD
$750 USD
A
Retailer 2
-
$1,173 SGD
£722 GBP
View
A
Retailer 3
-
$1,242 SGD
$971 USD
View
B+
Retailer 4
-
$1,436 SGD
$1,123 USD
View
B
Retailer 5
-
$2,639 SGD
£1,625 GBP
View
Most Expensive
B
Rare Carat
BS30-18_l_778629621 · Nov 1
$3,261 SGD
$2,550 USD
View
5 more retailers have this diamond
Prices start from $959 SGDSave up to $2,302 SGD

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
4.00ct Marquise
$959 SGD