Emerald|Lab Grown|IGI

3.18ct D IF Emerald Lab Grown Diamond

ID • D/IF • IGI LG680543138

Shape and cutting style on the report: Emerald cut

Certificate IGI LG680543138

Diamond specifications and retailer prices

From $1,486 USD
As of October 30, 2026
Save $8,744 USD (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $11,200 USD at Brilliant Earth · As of October 18, 2026
View at Brilliant Earth

About this 3.18ct lab-grown emerald diamond

This 3.18ct lab-grown emerald sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG680543138 or 680543138. Listed at 16 retailers as of October 29, 2026, with a 588% 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

3.18
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.5°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG680543138
Dimensions6.90 × 6.90 × 9.74 mm
L/W Ratio1.00
Culet sizeLarge
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.90 mm6.90 mm3.18 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG680543138
Side View
Table 64.0%Crown 41.5°Girdle: MED-STKPavilion 38.8°Culet: LargeDepth 68.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $11,200 USD|Low: $1,427 USD|High: $12,590 USD|Avg: $4,062 USD|-11.0%
Brilliant Earth
Retailer 2
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Retailer 7
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Retailer 12
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Retailer 17
October 26, 2026
Retailer 12$1,486 USD
Retailer 16$1,665 USD
Retailer 13$1,724 USD
Retailer 15$1,724 USD
Retailer 11$1,770 USD
Retailer 7$1,907 USD
Retailer 6$1,977 USD
Retailer 2$2,423 USD
Retailer 17$2,510 USD
Retailer 5$2,803 USD
Retailer 3$3,129 USD
Retailer 9$3,194 USD
Retailer 14$4,647 USD
Retailer 10$5,600 USD
Retailer 8$6,692 USD
Retailer 4$10,230 USD
Brilliant Earth$11,200 USD

17 data points across 17 retailers

16 retailers$1,486 USD to $10,230 USD

Retailer 1
-
$1,486 USD
Price last confirmed 19 days ago
A
Retailer 2
-
$1,486 USD
View
Retailer 3
-
$1,617 USD
View
Price last confirmed 21 days ago
A
Retailer 4
-
$1,665 USD
View
Final sale: no returns
Retailer 5
-
$1,724 USD
View
Price last confirmed 27 days ago
Retailer 6
-
$1,724 USD
View
Price last confirmed 18 days ago
Retailer 7
-
$1,724 USD
View
Price last confirmed 9 days ago
Retailer 8
-
$1,724 USD
View
Price last confirmed 18 days ago
A
Retailer 9
-
$1,770 USD
View
A
Retailer 10
-
$2,423 USD
View
A
Retailer 11
-
$2,510 USD
View
A
Retailer 12
-
$3,129 USD
View
B+
Retailer 13
-
$4,647 USD
View
Retailer 14
-
$5,600 USD
View
Price last confirmed 12 days ago
B
Retailer 15
-
$10,230 USD
View
Most Expensive
Brilliant Earth
20194256Y · Oct 18
$11,200 USD
View
Price last confirmed 12 days ago
15 more retailers have this diamond
Prices start from $1,486 USDSave up to $8,744 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
3.18ct Emerald
$1,486 USD