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5.51ct G VS1 Round Lab Grown Diamond

EX • G/VS1 • IGI LG851649911

Shape and cutting style on the report: Round brilliant

Certificate IGI LG851649911

Diamond specifications and retailer prices

From $3,381 USD
As of October 31, 2026
Save $889 USD (21%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,270 USD at Rare Carat · As of November 1, 2026
View at Rare Carat

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 LG851649911 or 851649911. Listed at 2 retailers as of October 31, 2026, with prices from $3,381 to $4,270, a $889 spread on the same certified stone. Rare Carat lists it at $4,270. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851649911
Dimensions11.47 × 11.56 × 6.79 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.47 mm11.56 mm5.51 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851649911
Side View
Table 61.0%Crown 32.9°Girdle: MediumPavilion 40.5°CuletDepth 58.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: $4,270 USD|Low: $3,381 USD|High: $4,270 USD|Avg: $3,677 USD
Rare Carat
Retailer 2
November 1, 2026
Retailer 2$3,381 USD
Rare Carat$4,270 USD

2 data points across 2 retailers

2 retailers$3,381 USD to $4,270 USD

B
Cheapest Retailer
-
$3,381 USD
Most Expensive
B
Rare Carat
LGRD50-190299 · Nov 1
$4,270 USD
View
1 more retailer has this diamond
Prices start from $3,381 USDSave up to $889 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.

B
5.51ct Round
$3,381 USD