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Cushion|Lab Grown|IGI

3.70ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG617400066

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG617400066

Diamond specifications and retailer prices

From $790 USD
As of October 31, 2026
Save $2,510 USD (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,300 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.7ct lab-grown cushion diamond

This 3.7ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG617400066 or 617400066. Listed at 14 retailers as of October 29, 2026, with prices from $790 to $3,300, a $2,510 spread on the same certified stone. Brilliant Earth lists it at $3,300. 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

3.70
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG617400066
Dimensions9.09 × 8.92 × 5.81 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.09 mm8.92 mm3.70 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG617400066
Side View
Table 62.0%Crown 35.4°Girdle: MED-STKPavilion 38.4°Culet: NoneDepth 65.1%

Caratlytics Score

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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 31
Current: $3,300 USD|Low: $518 USD|High: $3,400 USD|Avg: $1,408 USD|-2.9%
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
Retailer 16
October 31, 2026
Retailer 7$518 USD
Retailer 16$656 USD
Retailer 15$734 USD
Retailer 9$790 USD
Retailer 11$905 USD
Retailer 4$1,015 USD
Retailer 2$1,017 USD
Retailer 6$1,037 USD
Retailer 14$1,345 USD
Retailer 10$1,385 USD
Retailer 13$1,425 USD
Retailer 8$1,554 USD
Retailer 5$2,131 USD
Retailer 3$2,432 USD
Retailer 12$2,753 USD
Brilliant Earth$3,300 USD

36 data points across 16 retailers

14 retailers$790 USD to $3,300 USD

Retailer 1
-
$656 USD
Price last confirmed 15 days ago
Retailer 2
-
$734 USD
£578 GBP
View
Price last confirmed 14 days ago
A
Retailer 3
-
$790 USD
View
A
Retailer 4
-
$905 USD
€862 EUR
View
B+
Retailer 5
-
$1,015 USD
View
A
Retailer 6
-
$1,017 USD
£801 GBP
View
A
Retailer 7
-
$1,037 USD
View
A
Retailer 8
-
$1,345 USD
View
A
Retailer 9
-
$1,385 USD
A$2,131 AUD
View
A
Retailer 10
-
$1,425 USD
ZAR 23,015 ZAR
View
B+
Retailer 11
-
$2,131 USD
View
B
Retailer 12
-
$2,432 USD
View
B
Retailer 13
-
$2,753 USD
£2,168 GBP
View
Most Expensive
B
Brilliant Earth
8994055A · Oct 29
$3,300 USD
View
13 more retailers have this diamond
Prices start from $790 USDSave up to $2,510 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
3.70ct Cushion
$790 USD