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Marquise|Lab Grown|IGI

1.05ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG635454423

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG635454423

Diamond specifications and retailer prices

From $258 USD
As of October 30, 2026
Save $1,772 USD (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,030 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.05ct lab-grown marquise diamond

This 1.05ct 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 LG635454423 or 635454423. Listed at 22 retailers as of October 30, 2026, with prices from $258 to $2,030, a $1,772 spread on the same certified stone. Brilliant Earth lists it at $2,030. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.3°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG635454423
Dimensions10.88 × 5.30 × 3.26 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
10.88 mm5.30 mm1.05 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG635454423
Side View
Table 61.0%Crown 32.3°Girdle: THN-MEDPavilion 41°Culet: NoneDepth 61.5%

Caratlytics Score

How it works →
A+
Exceptional
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: $606 USD|Low: $245 USD|High: $1,378 USD|Avg: $627 USD|+2.7%
Retailer 1
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Retailer 21
October 31, 2026
Retailer 21$258 USD
Retailer 9$288 USD
Retailer 18$299 USD
Retailer 5$320 USD
Retailer 16$320 USD
Retailer 15$339 USD
Retailer 10$358 USD
Retailer 3$430 USD
Retailer 12$430 USD
Retailer 4$527 USD
Retailer 20$549 USD
Retailer 7$564 USD
Retailer 1$606 USD
Retailer 8$619 USD
Retailer 19$778 USD
Retailer 11$858 USD
Retailer 2$982 USD
Retailer 17$1,028 USD
Retailer 13$1,079 USD
Retailer 14$1,368 USD
Retailer 6$1,378 USD

25 data points across 21 retailers

22 retailers$258 USD to $2,030 USD

A+
Cheapest Retailer
-
$258 USD
A
Retailer 2
-
$288 USD
View
Final sale: no returns
A
Retailer 3
-
$299 USD
View
A
Retailer 4
-
$320 USD
View
A
Retailer 5
-
$320 USD
View
A
Retailer 6
-
$339 USD
£267 GBP
View
A
Retailer 7
-
$358 USD
HK$2,800 HKD
View
A
Retailer 8
-
$430 USD
View
A
Retailer 9
-
$430 USD
View
A
Retailer 10
-
$527 USD
€502 EUR
View
A
Retailer 11
-
$549 USD
ZAR 8,875 ZAR
View
A
Retailer 12
-
$564 USD
View
A
Retailer 13
-
$606 USD
£477 GBP
View
A
Retailer 14
-
$619 USD
View
B+
Retailer 15
-
$778 USD
A$1,197 AUD
View
B+
Retailer 16
-
$858 USD
SGD 1,159 SGD
View
B+
Retailer 17
-
$982 USD
View
B+
Retailer 18
-
$1,028 USD
View
B+
Retailer 19
-
$1,079 USD
View
Retailer 20
-
$1,368 USD
£1,077 GBP
View
Price last confirmed 10 days ago
B
Retailer 21
-
$1,378 USD
View
Most Expensive
B
Brilliant Earth
18876745A · Oct 30
$2,030 USD
View
21 more retailers have this diamond
Prices start from $258 USDSave up to $1,772 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+
1.05ct Marquise
$258 USD