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Round|Lab Grown|IGI

1.55ct F VS1 Round Lab Grown Diamond

EX • F/VS1 • IGI LG781634261

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781634261

Diamond specifications and retailer prices

From $213 USD
As of October 29, 2026
Save $927 USD (81%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,140 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.55ct lab-grown round diamond

This 1.55ct 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 LG781634261 or 781634261. Listed at 21 retailers as of October 28, 2026, with prices from $213 to $1,140, a $927 spread on the same certified stone. Brilliant Earth lists it at $1,140. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
F
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781634261
Dimensions7.53 × 7.50 × 4.49 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.53 mm7.50 mm1.55 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781634261
Side View
Table 61.0%Crown 33.6°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.8%

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: $1,140 USD|Low: $213 USD|High: $1,140 USD|Avg: $576 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 17
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Retailer 19
Retailer 20
Retailer 21
October 30, 2026
Retailer 15$213 USD
Retailer 10$239 USD
Retailer 6$248 USD
Retailer 3$265 USD
Retailer 9$265 USD
Retailer 16$423 USD
Retailer 18$455 USD
Retailer 19$456 USD
Retailer 4$472 USD
Retailer 13$490 USD
Retailer 17$597 USD
Retailer 20$620 USD
Retailer 2$693 USD
Retailer 8$808 USD
Retailer 14$810 USD
Retailer 5$853 USD
Retailer 11$861 USD
Retailer 7$906 USD
Retailer 21$1,066 USD
Retailer 12$1,081 USD
Brilliant Earth$1,140 USD

24 data points across 21 retailers

21 retailers$213 USD to $1,140 USD

A
Cheapest Retailer
-
$213 USD
A
Retailer 2
-
$248 USD
View
Retailer 3
-
$265 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$265 USD
View
A
Retailer 5
-
$423 USD
£333 GBP
View
B+
Retailer 6
-
$455 USD
View
A
Retailer 7
-
$456 USD
ZAR 7,367 ZAR
View
A
Retailer 8
-
$472 USD
View
A
Retailer 9
-
$490 USD
£386 GBP
View
B+
Retailer 10
-
$558 USD
A$858 AUD
View
B+
Retailer 11
-
$597 USD
View
B+
Retailer 12
-
$620 USD
A$954 AUD
View
B+
Retailer 13
-
$693 USD
View
B+
Retailer 14
-
$808 USD
View
Retailer 15
-
$810 USD
View
Price last confirmed 15 days ago
B+
Retailer 16
-
$853 USD
View
B+
Retailer 17
-
$861 USD
SGD 1,163 SGD
View
B+
Retailer 18
-
$906 USD
View
Retailer 19
-
$1,066 USD
£839 GBP
View
Price last confirmed 7 days ago
B
Retailer 20
-
$1,081 USD
View
Most Expensive
B
Brilliant Earth
21501265A · Oct 28
$1,140 USD
View
20 more retailers have this diamond
Prices start from $213 USDSave up to $927 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
1.55ct Round
$213 USD