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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 $786 SGD
$613 USD
As of October 29, 2026
Save $5,982 SGD (88%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $6,767 SGD 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 $786 to $6,767, a $5,982 spread on the same certified stone. Brilliant Earth lists it at $6,767. 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

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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: $6,767 SGD|Low: $755 SGD|High: $6,767 SGD|Avg: $2,247 SGD
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$786 SGD
Retailer 9$879 SGD
Retailer 8$974 SGD
Retailer 18$1,141 SGD
Retailer 6$1,307 SGD
Retailer 15$1,373 SGD
Retailer 11$1,473 SGD
Retailer 12$1,484 SGD
Retailer 2$1,517 SGD
Retailer 13$1,675 SGD
Retailer 16$2,284 SGD
Retailer 3$2,419 SGD
Retailer 7$2,612 SGD
Retailer 4$2,961 SGD
Retailer 10$3,220 SGD
Retailer 17$3,467 SGD
Retailer 14$4,237 SGD
Brilliant Earth$6,767 SGD

30 data points across 18 retailers

24 retailers$786 SGD to $6,767 SGD

A
Cheapest Retailer
-
$786 SGD
$613 USD
A
Retailer 2
-
$879 SGD
$686 USD
View
Final sale: no returns
A
Retailer 3
-
$881 SGD
$687 USD
View
A
Retailer 4
-
$974 SGD
$760 USD
View
A
Retailer 5
-
$974 SGD
$760 USD
View
Price last confirmed 13 days ago
A
Retailer 6
-
$1,141 SGD
$890 USD
View
A
Retailer 7
-
$1,262 SGD
$985 USD
View
A
Retailer 8
-
$1,307 SGD
$1,020 USD
View
A
Retailer 9
-
$1,373 SGD
A$1,648 AUD
View
A
Retailer 10
-
$1,473 SGD
£905 GBP
View
A
Retailer 11
-
$1,484 SGD
€1,103 EUR
View
A
Retailer 12
-
$1,517 SGD
£932 GBP
View
A
Retailer 13
-
$1,675 SGD
ZAR 21,114 ZAR
View
B+
Retailer 14
-
$1,837 SGD
$1,433 USD
View
B+
Retailer 15
-
$2,284 SGD
A$2,741 AUD
View
Price last confirmed 8 days ago
B+
Retailer 16
-
$2,419 SGD
$1,887 USD
View
B+
Retailer 17
-
$2,563 SGD
$2,000 USD
View
B+
Retailer 18
-
$2,612 SGD
A$3,135 AUD
View
Price last confirmed 21 days ago
B+
Retailer 19
-
$2,961 SGD
$2,310 USD
View
B
Retailer 20
-
$3,150 SGD
$2,458 USD
View
B
Retailer 21
-
$3,220 SGD
$2,512 USD
View
B+
Retailer 22
-
$3,467 SGD
$2,705 USD
View
B
Retailer 23
-
$4,237 SGD
£2,603 GBP
View
Most Expensive
B
Brilliant Earth
11460987A · Oct 29
$6,767 SGD
$5,280 USD
View
23 more retailers have this diamond
Prices start from $786 SGDSave up to $5,982 SGD

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
$786 SGD