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Round|Lab Grown|IGI

5.51ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG750558343

Shape and cutting style on the report: Round brilliant

Certificate IGI LG750558343

Diamond specifications and retailer prices

From $717 USD
As of October 26, 2026
Save $4,683 USD (87%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,400 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 5.51ct lab-grown round diamond

This 5.51ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG750558343 or 750558343. Listed at 21 retailers as of October 26, 2026, with prices from $717 to $5,400, a $4,683 spread on the same certified stone. Brilliant Earth lists it at $5,400. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.51
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG750558343
Dimensions11.44 × 11.39 × 6.88 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
11.44 mm11.39 mm5.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG750558343
Side View
Table 57.0%Crown 34.5°Girdle: MediumPavilion 40.1°Culet: NoneDepth 60.2%

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 26
Current: $5,400 USD|Low: $706 USD|High: $5,410 USD|Avg: $2,035 USD|-0.2%
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
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Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 31, 2026
Retailer 5$717 USD
Retailer 4$835 USD
Retailer 11$852 USD
Retailer 12$852 USD
Retailer 17$1,091 USD
Retailer 2$1,165 USD
Retailer 7$1,165 USD
Retailer 19$1,231 USD
Retailer 13$1,318 USD
Retailer 18$1,497 USD
Retailer 15$1,685 USD
Retailer 9$1,713 USD
Retailer 14$1,823 USD
Retailer 3$2,115 USD
Retailer 20$2,337 USD
Retailer 16$2,835 USD
Retailer 6$2,866 USD
Retailer 8$3,352 USD
Retailer 10$4,285 USD
Brilliant Earth$5,400 USD

35 data points across 20 retailers

21 retailers$717 USD to $5,400 USD

A
Cheapest Retailer
-
$717 USD
Retailer 2
-
$800 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
$835 USD
View
Final sale: no returns
Retailer 4
-
$852 USD
View
Price last confirmed 14 days ago
A
Retailer 5
-
$852 USD
View
A
Retailer 6
-
$1,091 USD
£859 GBP
View
B+
Retailer 7
-
$1,165 USD
View
A
Retailer 8
-
$1,165 USD
View
A
Retailer 9
-
$1,231 USD
View
A
Retailer 10
-
$1,318 USD
£1,038 GBP
View
A
Retailer 11
-
$1,497 USD
€1,426 EUR
View
B+
Retailer 12
-
$1,685 USD
A$2,592 AUD
View
Retailer 13
-
$1,713 USD
ZAR 27,673 ZAR
View
Price last confirmed 12 days ago
B+
Retailer 14
-
$1,823 USD
View
B+
Retailer 15
-
$2,115 USD
View
B+
Retailer 16
-
$2,337 USD
View
B
Retailer 17
-
$2,835 USD
View
B
Retailer 18
-
$2,866 USD
View
B
Retailer 19
-
$3,352 USD
£2,639 GBP
View
Retailer 20
-
$4,285 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
17473704A · Oct 30
$5,400 USD
View
20 more retailers have this diamond
Prices start from $717 USDSave up to $4,683 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
5.51ct Round
$717 USD