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Marquise|Lab Grown|IGI

0.51ct I SI1 Marquise Lab Grown Diamond

VG • I/SI1 • IGI LG414082005

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG414082005

Diamond specifications and retailer prices

From $350 SGD
$274 USD
As of November 2, 2026
Save $1,402 SGD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,752 SGD at MOH London · As of October 29, 2026
View at MOH London

About this 0.51ct lab-grown marquise diamond

This 0.51ct lab-grown marquise sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG414082005 or 414082005. Listed at 11 retailers as of October 29, 2026, with prices from $350 to $1,752, a $1,402 spread on the same certified stone. MOH London lists it at $1,752. 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

0.51
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle33.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG414082005
Dimensions8.50 × 4.28 × 2.54 mm
L/W Ratio1.99
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
8.50 mm4.28 mm0.51 ctI / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG414082005
Side View
Table 57.5%Crown 33.1°Girdle: THN-MEDPavilion 40.2°Culet: NoneDepth 59.3%

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 2
Current: $1,752 SGD|Low: $336 SGD|High: $1,765 SGD|Avg: $848 SGD|+0.5%
MOH London
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 9$350 SGD
Retailer 3$392 SGD
Retailer 13$407 SGD
Retailer 2$409 SGD
Retailer 10$435 SGD
Retailer 14$435 SGD
Retailer 4$639 SGD
Retailer 12$721 SGD
Retailer 7$808 SGD
Retailer 5$886 SGD
Retailer 8$1,336 SGD
Retailer 11$1,399 SGD
Retailer 6$1,749 SGD
MOH London$1,752 SGD

22 data points across 14 retailers

11 retailers$350 SGD to $1,752 SGD

A
Cheapest Retailer
-
$350 SGD
$274 USD
B+
Retailer 2
-
$392 SGD
$307 USD
View
Final sale: no returns
B+
Retailer 3
-
$407 SGD
$318 USD
View
B+
Retailer 4
-
$409 SGD
$320 USD
View
Retailer 5
-
$435 SGD
$340 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$435 SGD
$340 USD
View
B
Retailer 7
-
$721 SGD
$564 USD
View
Retailer 8
-
$808 SGD
€602 EUR
View
Price last confirmed 7 days ago
B
Retailer 9
-
$1,336 SGD
$1,045 USD
View
C
Retailer 10
-
$1,399 SGD
$1,094 USD
View
Most Expensive
B
MOH London
LG414082005 · Oct 29
$1,752 SGD
£1,079 GBP
View
10 more retailers have this diamond
Prices start from $350 SGDSave up to $1,402 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
0.51ct Marquise
$350 SGD