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Round|Lab Grown|IGI

1.91ct F VS1 Round Lab Grown Diamond

ID • F/VS1 • IGI LG630443173

Shape and cutting style on the report: Round brilliant

Certificate IGI LG630443173

Diamond specifications and retailer prices

From $428 SGD
$335 USD
As of November 1, 2026
Save $1,471 SGD (77%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $3,132 SGD at Brilliant Earth · As of October 4, 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 F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG630443173 or 630443173. Listed at 26 retailers as of November 1, 2026, with a 344% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG630443173
Dimensions7.89 × 7.95 × 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
7.89 mm7.95 mm1.91 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG630443173
Side View
Table 56.0%Crown 35.7°Girdle: MED-STKPavilion 40.6°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: Nov 1
Current: $3,132 SGD|Low: $375 SGD|High: $3,132 SGD|Avg: $1,155 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
Retailer 19
Retailer 20
Retailer 21
November 2, 2026
Retailer 10$390 SGD
Retailer 4$428 SGD
Retailer 12$483 SGD
Retailer 5$524 SGD
Retailer 21$637 SGD
Retailer 17$639 SGD
Retailer 2$776 SGD
Retailer 13$817 SGD
Retailer 3$826 SGD
Retailer 15$838 SGD
Retailer 18$871 SGD
Retailer 6$895 SGD
Retailer 19$1,102 SGD
Retailer 20$1,221 SGD
Retailer 8$1,516 SGD
Retailer 11$1,547 SGD
Retailer 14$1,581 SGD
Retailer 7$1,584 SGD
Retailer 9$1,823 SGD
Retailer 16$1,900 SGD
Brilliant Earth$3,132 SGD

39 data points across 21 retailers

26 retailers$428 SGD to $1,900 SGD

Retailer 1
-
$390 SGD
$305 USD
Price last confirmed 14 days ago
A
Retailer 2
-
$428 SGD
$335 USD
View
Final sale: no returns
Retailer 3
-
$453 SGD
$354 USD
View
Price last confirmed 13 days ago
Retailer 4
-
$478 SGD
$374 USD
View
Price last confirmed 48 days ago
Retailer 5
-
$483 SGD
$378 USD
View
Price last confirmed 16 days ago
Retailer 6
-
$483 SGD
$378 USD
View
Price last confirmed 14 days ago
A
Retailer 7
-
$524 SGD
HK$3,200 HKD
View
B+
Retailer 8
-
$637 SGD
$498 USD
View
A
Retailer 9
-
$639 SGD
$500 USD
View
A
Retailer 10
-
$776 SGD
€578 EUR
View
A
Retailer 11
-
$817 SGD
ZAR 10,325 ZAR
View
A
Retailer 12
-
$826 SGD
$646 USD
View
A
Retailer 13
-
$838 SGD
£516 GBP
View
A
Retailer 14
-
$871 SGD
A$1,048 AUD
View
B+
Retailer 15
-
$895 SGD
$700 USD
View
B+
Retailer 16
-
$1,102 SGD
A$1,326 AUD
View
B+
Retailer 17
-
$1,221 SGD
$955 USD
View
B
Retailer 18
-
$1,516 SGD
View
Retailer 19
-
$1,547 SGD
$1,210 USD
View
Price last confirmed 25 days ago
Retailer 20
-
$1,555 SGD
$1,216 USD
View
Price last confirmed 15 days ago
Retailer 21
-
$1,581 SGD
A$1,903 AUD
View
Price last confirmed 28 days ago
B
Retailer 22
-
$1,584 SGD
$1,239 USD
View
B
Retailer 23
-
$1,666 SGD
$1,303 USD
View
B
Retailer 24
-
$1,823 SGD
$1,426 USD
View
B
Retailer 25
-
$1,900 SGD
£1,170 GBP
View
Most Expensive
Brilliant Earth
9989183A · Oct 4
$3,132 SGD
$2,450 USD
View
Price last confirmed 28 days ago
25 more retailers have this diamond
Prices start from $428 SGDSave up to $1,471 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
$428 SGD