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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 $335 USD
As of October 30, 2026
Save $1,159 USD (78%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $2,450 USD 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 October 29, 2026, with a 346% 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
Color
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

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 30
Current: $2,450 USD|Low: $293 USD|High: $2,450 USD|Avg: $918 USD
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
October 31, 2026
Retailer 10$305 USD
Retailer 4$335 USD
Retailer 12$378 USD
Retailer 5$410 USD
Retailer 21$498 USD
Retailer 13$500 USD
Retailer 2$605 USD
Retailer 19$637 USD
Retailer 3$646 USD
Retailer 15$656 USD
Retailer 17$681 USD
Retailer 6$700 USD
Retailer 18$862 USD
Retailer 20$955 USD
Retailer 8$1,186 USD
Retailer 11$1,210 USD
Retailer 14$1,237 USD
Retailer 7$1,239 USD
Retailer 9$1,426 USD
Retailer 16$1,494 USD
Brilliant Earth$2,450 USD

39 data points across 21 retailers

26 retailers$335 USD to $1,494 USD

Retailer 1
-
$305 USD
Price last confirmed 13 days ago
A
Retailer 2
-
$335 USD
View
Final sale: no returns
Retailer 3
-
$354 USD
View
Price last confirmed 11 days ago
Retailer 4
-
$374 USD
View
Price last confirmed 46 days ago
Retailer 5
-
$378 USD
View
Price last confirmed 15 days ago
Retailer 6
-
$378 USD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$410 USD
HK$3,200 HKD
View
B+
Retailer 8
-
$498 USD
View
A
Retailer 9
-
$500 USD
View
A
Retailer 10
-
$605 USD
€576 EUR
View
A
Retailer 11
-
$637 USD
ZAR 10,289 ZAR
View
A
Retailer 12
-
$646 USD
View
A
Retailer 13
-
$656 USD
£516 GBP
View
A
Retailer 14
-
$681 USD
A$1,048 AUD
View
B+
Retailer 15
-
$700 USD
View
B+
Retailer 16
-
$862 USD
A$1,326 AUD
View
B+
Retailer 17
-
$955 USD
View
B
Retailer 18
-
$1,186 USD
SGD 1,603 SGD
View
Retailer 19
-
$1,210 USD
View
Price last confirmed 23 days ago
Retailer 20
-
$1,216 USD
View
Price last confirmed 13 days ago
Retailer 21
-
$1,237 USD
A$1,903 AUD
View
Price last confirmed 26 days ago
B
Retailer 22
-
$1,239 USD
View
B
Retailer 23
-
$1,303 USD
View
B
Retailer 24
-
$1,426 USD
View
B
Retailer 25
-
$1,494 USD
£1,176 GBP
View
Most Expensive
Brilliant Earth
9989183A · Oct 4
$2,450 USD
View
Price last confirmed 27 days ago
25 more retailers have this diamond
Prices start from $335 USDSave up to $1,159 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
1.91ct Round
$335 USD