Round|Lab Grown|IGI

6.61ct G VS1 Round Lab Grown Diamond

EX • G/VS1 • IGI LG840639131

Shape and cutting style on the report: Round brilliant

Certificate IGI LG840639131

Diamond specifications and retailer prices

From $1,023 USD
As of October 29, 2026
Save $1,884 USD (65%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $13,110 USD at Brilliant Earth · As of October 1, 2026
View at Brilliant Earth

About this 6.61ct lab-grown round diamond

This 6.61ct 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 LG840639131 or 840639131. Listed at 4 retailers as of October 29, 2026, with a 184% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

6.61
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840639131
Dimensions11.95 × 11.99 × 7.38 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.95 mm11.99 mm6.61 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840639131
Side View
Table 60.0%Crown 35°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.7%

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: $13,110 USD|Low: $1,023 USD|High: $13,110 USD|Avg: $4,598 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 27, 2026
Retailer 3$1,023 USD
Retailer 4$1,388 USD
Retailer 5$1,655 USD
Retailer 2$2,907 USD
Brilliant Earth$13,110 USD

7 data points across 5 retailers

4 retailers$1,023 USD to $2,907 USD

A
Cheapest Retailer
-
$1,023 USD
Final sale: no returns
B+
Retailer 2
-
$1,388 USD
View
B+
Retailer 3
-
$2,907 USD
View
Most Expensive
Brilliant Earth
21613482A · Oct 1
$13,110 USD
View
Price under review
3 more retailers have this diamond
Prices start from $1,023 USDSave up to $1,884 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
6.61ct Round
$1,023 USD