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Round|Lab Grown|IGI

1.91ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG640491565

Shape and cutting style on the report: Round brilliant

Certificate IGI LG640491565

Diamond specifications and retailer prices

From $1,091 NZD
$613 USD
As of October 29, 2026
Save $8,310 NZD (88%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $9,401 NZD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 LG640491565 or 640491565. Listed at 24 retailers as of October 29, 2026, with prices from $1,091 to $9,401, a $8,310 spread on the same certified stone. Brilliant Earth lists it at $9,401. 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 angle35.8°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG640491565
Dimensions7.88 × 7.93 × 4.92 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
7.88 mm7.93 mm1.91 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG640491565
Side View
Table 58.0%Crown 35.8°Girdle: MediumPavilion 41°Culet: NoneDepth 62.2%

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 29
Current: $9,401 NZD|Low: $1,049 NZD|High: $9,401 NZD|Avg: $3,122 NZD
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
Retailer 17
Retailer 18
October 29, 2026
Retailer 5$1,091 NZD
Retailer 9$1,221 NZD
Retailer 8$1,353 NZD
Retailer 18$1,585 NZD
Retailer 6$1,816 NZD
Retailer 15$1,907 NZD
Retailer 11$2,046 NZD
Retailer 12$2,062 NZD
Retailer 2$2,107 NZD
Retailer 13$2,327 NZD
Retailer 16$3,172 NZD
Retailer 3$3,360 NZD
Retailer 7$3,628 NZD
Retailer 4$4,113 NZD
Retailer 10$4,473 NZD
Retailer 17$4,816 NZD
Retailer 14$5,886 NZD
Brilliant Earth$9,401 NZD

30 data points across 18 retailers

24 retailers$1,091 NZD to $9,401 NZD

A
Cheapest Retailer
-
$1,091 NZD
$613 USD
A
Retailer 2
-
$1,221 NZD
$686 USD
View
Final sale: no returns
A
Retailer 3
-
$1,223 NZD
$687 USD
View
A
Retailer 4
-
$1,353 NZD
$760 USD
View
A
Retailer 5
-
$1,353 NZD
$760 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
$1,585 NZD
$890 USD
View
A
Retailer 7
-
$1,754 NZD
$985 USD
View
A
Retailer 8
-
$1,816 NZD
$1,020 USD
View
A
Retailer 9
-
$1,907 NZD
A$1,648 AUD
View
A
Retailer 10
-
$2,046 NZD
£905 GBP
View
A
Retailer 11
-
$2,062 NZD
€1,103 EUR
View
A
Retailer 12
-
$2,107 NZD
£932 GBP
View
A
Retailer 13
-
$2,327 NZD
ZAR 21,114 ZAR
View
B+
Retailer 14
-
$2,551 NZD
$1,433 USD
View
B+
Retailer 15
-
$3,172 NZD
A$2,741 AUD
View
Price last confirmed 8 days ago
B+
Retailer 16
-
$3,360 NZD
$1,887 USD
View
B+
Retailer 17
-
$3,561 NZD
$2,000 USD
View
B+
Retailer 18
-
$3,628 NZD
A$3,135 AUD
View
Price last confirmed 21 days ago
B+
Retailer 19
-
$4,113 NZD
$2,310 USD
View
B
Retailer 20
-
$4,376 NZD
$2,458 USD
View
B
Retailer 21
-
$4,473 NZD
$2,512 USD
View
B+
Retailer 22
-
$4,816 NZD
$2,705 USD
View
B
Retailer 23
-
$5,886 NZD
£2,603 GBP
View
Most Expensive
B
Brilliant Earth
11460987A · Oct 29
$9,401 NZD
$5,280 USD
View
23 more retailers have this diamond
Prices start from $1,091 NZDSave up to $8,310 NZD

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
$1,091 NZD