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Marquise|Lab Grown|IGI

1.00ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG823613031

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG823613031

Diamond specifications and retailer prices

From $404 AUD
$284 USD
As of October 30, 2026
Save $1,674 AUD (81%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,078 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1ct lab-grown marquise diamond

This 1ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG823613031 or 823613031. Listed at 22 retailers as of October 30, 2026, with prices from $404 to $2,078, a $1,674 spread on the same certified stone. Brilliant Earth lists it at $2,078. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823613031
Dimensions10.43 × 5.22 × 3.25 mm
L/W Ratio2.00
Girdle conditionFaceted
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
10.43 mm5.22 mm1.00 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823613031
Side View
Table 62.0%Crown 35.9°Girdle: MED-THKPavilion 39.9°Culet: NoneDepth 62.3%

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: Oct 30
Current: $2,078 AUD|Low: $404 AUD|High: $2,363 AUD|Avg: $1,133 AUD|-7.0%
Brilliant Earth
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
October 31, 2026
Retailer 4$404 AUD
Retailer 10$477 AUD
Retailer 5$605 AUD
Retailer 14$605 AUD
Retailer 16$770 AUD
Retailer 13$772 AUD
Retailer 3$813 AUD
Retailer 9$857 AUD
Retailer 2$1,068 AUD
Retailer 12$1,094 AUD
Retailer 7$1,207 AUD
Retailer 8$1,518 AUD
Retailer 15$1,757 AUD
Retailer 11$1,810 AUD
Retailer 6$1,947 AUD
Brilliant Earth$2,078 AUD

34 data points across 16 retailers

22 retailers$404 AUD to $2,078 AUD

Retailer 1
-
$275 AUD
$193 USD
Price last confirmed 29 days ago
Retailer 2
-
$333 AUD
$234 USD
View
Price last confirmed 32 days ago
Retailer 3
-
$356 AUD
$250 USD
View
Price last confirmed 28 days ago
A
Retailer 4
-
$404 AUD
$284 USD
View
Final sale: no returns
Retailer 5
-
$463 AUD
$325 USD
View
Price last confirmed 23 days ago
A
Retailer 6
-
$477 AUD
£264 GBP
View
A
Retailer 7
-
$605 AUD
$425 USD
View
A
Retailer 8
-
$605 AUD
$425 USD
View
B+
Retailer 9
-
$770 AUD
€515 EUR
View
B+
Retailer 10
-
$772 AUD
ZAR 8,761 ZAR
View
A
Retailer 11
-
$813 AUD
$571 USD
View
B+
Retailer 12
-
$857 AUD
£474 GBP
View
B+
Retailer 13
-
$1,068 AUD
$750 USD
View
B+
Retailer 14
-
$1,094 AUD
View
B+
Retailer 15
-
$1,207 AUD
SGD 1,146 SGD
View
Retailer 16
-
$1,435 AUD
View
Price last confirmed 79 days ago
Retailer 17
-
$1,486 AUD
$1,044 USD
View
Price last confirmed 24 days ago
B+
Retailer 18
-
$1,518 AUD
$1,066 USD
View
B
Retailer 19
-
$1,757 AUD
£972 GBP
View
B
Retailer 20
-
$1,810 AUD
£1,001 GBP
View
B
Retailer 21
-
$1,947 AUD
$1,368 USD
View
Most Expensive
B
Brilliant Earth
20997943A · Oct 30
$2,078 AUD
$1,460 USD
View
21 more retailers have this diamond
Prices start from $404 AUDSave up to $1,674 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
1.00ct Marquise
$404 AUD