Emerald|Lab Grown|IGI

5.12ct D SI1 Emerald Lab Grown Diamond

ID • D/SI1 • IGI LG621457283

Shape and cutting style on the report: Emerald cut

Certificate IGI LG621457283

Diamond specifications and retailer prices

From $926 USD
As of October 30, 2026
Save $7,124 USD (88%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,050 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 5.12ct lab-grown emerald diamond

This 5.12ct lab-grown emerald sits in the over five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG621457283 or 621457283. Listed at 16 retailers as of October 29, 2026, with prices from $926 to $8,050, a $7,124 spread on the same certified stone. Brilliant Earth lists it at $8,050. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

5.12
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621457283
Dimensions11.67 × 8.11 × 5.26 mm
L/W Ratio1.44
Culet sizeLong
Top View
11.67 mm8.11 mm5.12 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621457283
Side View
Table 66.0%Crown 33.1°Girdle: Slightly ThickPavilion 37.3°Culet: LNGDepth 64.9%

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 30
Current: $8,050 USD|Low: $740 USD|High: $8,300 USD|Avg: $2,112 USD|-3.0%
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
October 30, 2026
Retailer 10$926 USD
Retailer 6$986 USD
Retailer 3$1,008 USD
Retailer 5$1,037 USD
Retailer 11$1,075 USD
Retailer 14$1,075 USD
Retailer 7$1,250 USD
Retailer 4$1,429 USD
Retailer 2$1,655 USD
Retailer 12$1,722 USD
Retailer 9$2,391 USD
Retailer 13$3,021 USD
Retailer 8$3,649 USD
Brilliant Earth$8,050 USD

43 data points across 14 retailers

16 retailers$926 USD to $8,050 USD

A
Cheapest Retailer
-
$926 USD
A
Retailer 2
-
$1,008 USD
View
A
Retailer 3
-
$1,037 USD
View
Final sale: no returns
A
Retailer 4
-
$1,075 USD
View
Retailer 5
-
$1,075 USD
View
Price last confirmed 18 days ago
A
Retailer 6
-
$1,250 USD
View
B+
Retailer 7
-
$1,429 USD
View
B+
Retailer 8
-
$1,655 USD
£1,303 GBP
View
B+
Retailer 9
-
$1,722 USD
View
B
Retailer 10
-
$2,391 USD
View
B
Retailer 11
-
$3,021 USD
View
B
Retailer 12
-
$3,348 USD
View
B
Retailer 13
-
$3,649 USD
£2,873 GBP
View
B
Retailer 14
-
$3,737 USD
View
B
Retailer 15
-
$6,336 USD
HK$49,500 HKD
View
Most Expensive
B
Brilliant Earth
17976517A · Oct 29
$8,050 USD
View
15 more retailers have this diamond
Prices start from $926 USDSave up to $7,124 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
5.12ct Emerald
$926 USD