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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 $346 AUD
HK$1,900 HKD
As of October 26, 2026
Save $508 AUD (59%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,365 AUD 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: $1,365 AUD|Low: $186 AUD|High: $1,374 AUD|Avg: $628 AUD|+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 25, 2026
Retailer 10$235 AUD
Retailer 12$262 AUD
Retailer 5$347 AUD
Retailer 11$413 AUD
Retailer 6$496 AUD
Retailer 2$541 AUD
Retailer 3$599 AUD
Retailer 13$629 AUD
Retailer 7$822 AUD
Retailer 4$834 AUD
Retailer 9$854 AUD
Retailer 8$987 AUD
MOH London$1,365 AUD

37 data points across 13 retailers

22 retailers$346 AUD to $854 AUD

Retailer 1
-
$235 AUD
$165 USD
Price last confirmed 22 days ago
Retailer 2
-
$235 AUD
$165 USD
View
Price last confirmed 30 days ago
Retailer 3
-
$272 AUD
$191 USD
View
Price last confirmed 31 days ago
Retailer 4
-
$286 AUD
$201 USD
View
Price last confirmed 31 days ago
Retailer 5
-
$290 AUD
$204 USD
View
Price last confirmed 27 days ago
Retailer 6
-
$290 AUD
$204 USD
View
Price last confirmed 20 days ago
A
Retailer 7
-
$346 AUD
HK$1,900 HKD
View
Retailer 8
-
$347 AUD
$244 USD
View
Price last confirmed 7 days ago
Retailer 9
-
$413 AUD
$290 USD
View
Price last confirmed 7 days ago
A
Retailer 10
-
$496 AUD
£274 GBP
View
B+
Retailer 11
-
$541 AUD
€362 EUR
View
Retailer 12
-
$599 AUD
$420 USD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
$629 AUD
$442 USD
View
B
Retailer 14
-
$822 AUD
View
Retailer 15
-
$834 AUD
SGD 792 SGD
View
Price last confirmed 7 days ago
B
Retailer 16
-
$854 AUD
$600 USD
View
Retailer 17
-
$934 AUD
$656 USD
View
Price last confirmed 8 days ago
Retailer 18
-
$934 AUD
$656 USD
View
Price last confirmed 30 days ago
Retailer 19
-
$934 AUD
$656 USD
View
Price last confirmed 20 days ago
Retailer 20
-
$987 AUD
$693 USD
View
Price last confirmed 7 days ago
Retailer 21
-
$1,011 AUD
$711 USD
View
Price last confirmed 7 days ago
Most Expensive
MOH London
LG490179438 · Oct 21
$1,365 AUD
£755 GBP
View
Price last confirmed 9 days ago
21 more retailers have this diamond
Prices start from $346 AUDSave up to $508 AUD

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
$346 AUD