Round|Lab Grown|IGI

6.51ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG675550851

Shape and cutting style on the report: Round brilliant

Certificate IGI LG675550851

Diamond specifications and retailer prices

From $977 USD

As of October 29, 2026

Save $2,972 USD (75%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: $3,949 USD at Taylor and Hart · As of October 31, 2026

View at Taylor and Hart

About this 6.51ct lab-grown round diamond

This 6.51ct 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 LG675550851 or 675550851. Listed at 17 retailers as of October 29, 2026, with prices from $977 to $3,949, a $2,972 spread on the same certified stone. Taylor and Hart lists it at $3,949. 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

6.51

Carat

Color

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishVery Good

SymmetryExcellent

FluorescenceNone

Crown angle34°

Pavilion angle40.9°

OriginLab Grown

Grading LabIGI

CertificateIGI LG675550851

Dimensions12.05 × 12.01 × 7.30 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

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishVery Good

SymmetryExcellent

FluorescenceNone

CertificateIGI LG675550851

Side View

Caratlytics Score

How it works →

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: $1,310 USD|Low: $977 USD|High: $4,251 USD|Avg: $1,977 USD|+6.9%

Retailer 1

Retailer 2

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Retailer 16

Taylor and Hart

October 31, 2026

Retailer 7$977 USD

Retailer 9$1,063 USD

Retailer 5$1,093 USD

Retailer 15$1,134 USD

Retailer 8$1,238 USD

Retailer 1$1,310 USD

Retailer 14$1,614 USD

Retailer 11$1,742 USD

Retailer 6$1,813 USD

Retailer 2$2,125 USD

Retailer 13$2,193 USD

Retailer 10$2,443 USD

Retailer 3$2,773 USD

Retailer 16$3,503 USD

Retailer 4$3,515 USD

Retailer 12$3,865 USD

Taylor and Hart$3,949 USD

40 data points across 17 retailers

17 retailers$977 USD to $3,949 USD

Cheapest Retailer

$977 USD

Retailer 2

$1,063 USD

View

Retailer 3

$1,093 USD

View

Final sale: no returns

Retailer 4

$1,134 USD

View

Retailer 5

$1,238 USD

View

Price last confirmed 14 days ago

Retailer 6

$1,310 USD

View

Retailer 7

$1,614 USD

View

Retailer 8

$1,742 USD

£1,372 GBP

View

B+

Retailer 9

$1,813 USD

View

B+

Retailer 10

$2,125 USD

View

B+

Retailer 11

$2,193 USD

ZAR 35,433 ZAR

View

B+

Retailer 12

$2,443 USD

View

B+

Retailer 13

$2,773 USD

View

Retailer 14

$3,503 USD

View

Retailer 15

$3,515 USD

View

Retailer 16

$3,865 USD

£3,043 GBP

View

Most Expensive

Taylor and Hart

DT02D8K · Oct 31

$3,949 USD

View

16 more retailers have this diamond

Prices start from $977 USDSave up to $2,972 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.

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6.51ct Round

$977 USD