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Round|Lab Grown|IGI

1.91ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG655411900

Shape and cutting style on the report: Round brilliant

Certificate IGI LG655411900

Diamond specifications and retailer prices

From $539 AUD
$379 USD
As of October 29, 2026
Save $3,147 AUD (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,687 AUD at Rare Carat · As of October 25, 2026
View at Rare Carat

About this 1.91ct lab-grown round diamond

This 1.91ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG655411900 or 655411900. Listed at 19 retailers as of October 25, 2026, with prices from $539 to $3,687, a $3,147 spread on the same certified stone. Rare Carat lists it at $3,687. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG655411900
Dimensions7.94 × 7.89 × 4.93 mm
L/W Ratio1.01
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
7.94 mm7.89 mm1.91 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG655411900
Side View
Table 58.0%Crown 35.6°Girdle: MediumPavilion 41.1°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 29
Current: $3,687 AUD|Low: $518 AUD|High: $3,758 AUD|Avg: $1,435 AUD|-1.9%
Rare Carat
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 29, 2026
Retailer 16$539 AUD
Retailer 5$604 AUD
Retailer 7$604 AUD
Retailer 3$669 AUD
Retailer 13$883 AUD
Retailer 15$918 AUD
Retailer 10$1,011 AUD
Retailer 6$1,041 AUD
Retailer 11$1,149 AUD
Retailer 12$1,199 AUD
Retailer 2$1,553 AUD
Retailer 14$1,876 AUD
Retailer 8$2,151 AUD
Retailer 4$2,505 AUD
Retailer 9$2,627 AUD
Rare Carat$3,687 AUD

41 data points across 16 retailers

19 retailers$539 AUD to $3,687 AUD

A
Cheapest Retailer
-
$539 AUD
$379 USD
A
Retailer 2
-
$604 AUD
$424 USD
View
A
Retailer 3
-
$604 AUD
$424 USD
View
Final sale: no returns
A
Retailer 4
-
$669 AUD
$470 USD
View
A
Retailer 5
-
$669 AUD
$470 USD
View
A
Retailer 6
-
$883 AUD
$620 USD
View
A
Retailer 7
-
$918 AUD
$645 USD
View
A
Retailer 8
-
$1,011 AUD
£559 GBP
View
A
Retailer 9
-
$1,041 AUD
$731 USD
View
A
Retailer 10
-
$1,149 AUD
ZAR 13,045 ZAR
View
A
Retailer 11
-
$1,199 AUD
£663 GBP
View
A
Retailer 12
-
$1,553 AUD
View
B+
Retailer 13
-
$1,876 AUD
$1,318 USD
View
B+
Retailer 14
-
$1,924 AUD
$1,352 USD
View
B+
Retailer 15
-
$2,151 AUD
$1,511 USD
View
B+
Retailer 16
-
$2,205 AUD
$1,549 USD
View
B+
Retailer 17
-
$2,505 AUD
$1,760 USD
View
B+
Retailer 18
-
$2,627 AUD
£1,453 GBP
View
Most Expensive
B
Rare Carat
GD12326_l_655411900 · Oct 25
$3,687 AUD
$2,590 USD
View
18 more retailers have this diamond
Prices start from $539 AUDSave up to $3,147 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
1.91ct Round
$539 AUD