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Marquise|Lab Grown|IGI

0.91ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG490179438

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG490179438

Diamond specifications and retailer prices

From $311 SGD
HK$1,900 HKD
As of October 26, 2026
Save $456 SGD (59%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,226 SGD at MOH London · As of October 21, 2026
View at MOH London

About this 0.91ct lab-grown marquise diamond

This 0.91ct lab-grown marquise sits in the just-under-one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG490179438 or 490179438. Listed at 22 retailers as of October 26, 2026, with a 147% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.91
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG490179438
Dimensions10.29 × 5.03 × 3.14 mm
L/W Ratio2.05
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
10.29 mm5.03 mm0.91 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG490179438
Side View
Table 58.5%Crown 34.9°Girdle: THN-STKPavilion 40.3°Culet: NoneDepth 62.4%

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: Oct 26
Current: $1,226 SGD|Low: $167 SGD|High: $1,234 SGD|Avg: $566 SGD|+0.4%
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
October 31, 2026
Retailer 10$211 SGD
Retailer 12$235 SGD
Retailer 5$312 SGD
Retailer 11$371 SGD
Retailer 7$446 SGD
Retailer 6$486 SGD
Retailer 3$537 SGD
Retailer 13$565 SGD
Retailer 2$738 SGD
Retailer 4$749 SGD
Retailer 9$767 SGD
Retailer 8$886 SGD
MOH London$1,226 SGD

37 data points across 13 retailers

22 retailers$311 SGD to $767 SGD

Retailer 1
-
$211 SGD
$165 USD
Price last confirmed 22 days ago
Retailer 2
-
$211 SGD
$165 USD
View
Price last confirmed 31 days ago
Retailer 3
-
$244 SGD
$191 USD
View
Price last confirmed 31 days ago
Retailer 4
-
$257 SGD
$201 USD
View
Price last confirmed 32 days ago
Retailer 5
-
$261 SGD
$204 USD
View
Price last confirmed 27 days ago
Retailer 6
-
$261 SGD
$204 USD
View
Price last confirmed 20 days ago
A
Retailer 7
-
$311 SGD
HK$1,900 HKD
View
Retailer 8
-
$312 SGD
$244 USD
View
Price last confirmed 7 days ago
Retailer 9
-
$371 SGD
$290 USD
View
Price last confirmed 7 days ago
A
Retailer 10
-
$446 SGD
£274 GBP
View
B+
Retailer 11
-
$486 SGD
€362 EUR
View
Retailer 12
-
$537 SGD
$420 USD
View
Price last confirmed 9 days ago
Retailer 13
-
$565 SGD
$442 USD
View
Price last confirmed 7 days ago
B
Retailer 14
-
$738 SGD
A$888 AUD
View
Retailer 15
-
$749 SGD
View
Price last confirmed 7 days ago
B
Retailer 16
-
$767 SGD
$600 USD
View
Retailer 17
-
$839 SGD
$656 USD
View
Price last confirmed 8 days ago
Retailer 18
-
$839 SGD
$656 USD
View
Price last confirmed 30 days ago
Retailer 19
-
$839 SGD
$656 USD
View
Price last confirmed 20 days ago
Retailer 20
-
$886 SGD
$693 USD
View
Price last confirmed 7 days ago
Retailer 21
-
$908 SGD
$711 USD
View
Price last confirmed 7 days ago
Most Expensive
MOH London
LG490179438 · Oct 21
$1,226 SGD
£755 GBP
View
Price last confirmed 9 days ago
21 more retailers have this diamond
Prices start from $311 SGDSave up to $456 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
0.91ct Marquise
$311 SGD