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 $284 USD
As of October 30, 2026
Save $1,176 USD (81%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,460 USD 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 $284 to $1,460, a $1,176 spread on the same certified stone. Brilliant Earth lists it at $1,460. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,460 USD|Low: $284 USD|High: $1,660 USD|Avg: $796 USD|-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$284 USD
Retailer 10$335 USD
Retailer 5$425 USD
Retailer 14$425 USD
Retailer 16$541 USD
Retailer 13$542 USD
Retailer 3$571 USD
Retailer 9$602 USD
Retailer 2$750 USD
Retailer 12$768 USD
Retailer 7$848 USD
Retailer 8$1,066 USD
Retailer 15$1,234 USD
Retailer 11$1,271 USD
Retailer 6$1,368 USD
Brilliant Earth$1,460 USD

34 data points across 16 retailers

22 retailers$284 USD to $1,460 USD

Retailer 1
-
$193 USD
Price last confirmed 28 days ago
Retailer 2
-
$234 USD
View
Price last confirmed 32 days ago
Retailer 3
-
$250 USD
View
Price last confirmed 27 days ago
A
Retailer 4
-
$284 USD
View
Final sale: no returns
Retailer 5
-
$325 USD
View
Price last confirmed 22 days ago
A
Retailer 6
-
$335 USD
£264 GBP
View
A
Retailer 7
-
$425 USD
View
A
Retailer 8
-
$425 USD
View
B+
Retailer 9
-
$541 USD
€515 EUR
View
B+
Retailer 10
-
$542 USD
ZAR 8,761 ZAR
View
A
Retailer 11
-
$571 USD
View
B+
Retailer 12
-
$602 USD
£474 GBP
View
B+
Retailer 13
-
$750 USD
View
B+
Retailer 14
-
$768 USD
A$1,182 AUD
View
B+
Retailer 15
-
$848 USD
SGD 1,146 SGD
View
Retailer 16
-
$1,008 USD
A$1,551 AUD
View
Price last confirmed 78 days ago
Retailer 17
-
$1,044 USD
View
Price last confirmed 23 days ago
B+
Retailer 18
-
$1,066 USD
View
B
Retailer 19
-
$1,234 USD
£972 GBP
View
B
Retailer 20
-
$1,271 USD
£1,001 GBP
View
B
Retailer 21
-
$1,368 USD
View
Most Expensive
B
Brilliant Earth
20997943A · Oct 30
$1,460 USD
View
21 more retailers have this diamond
Prices start from $284 USDSave up to $1,176 USD

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
$284 USD