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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 $1,318 AUD
$926 USD
As of October 30, 2026
Save $10,140 AUD (88%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $11,458 AUD 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 $1,318 to $11,458, a $10,140 spread on the same certified stone. Brilliant Earth lists it at $11,458. 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
Colour
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

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 30
Current: $11,458 AUD|Low: $1,053 AUD|High: $11,814 AUD|Avg: $3,006 AUD|-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$1,318 AUD
Retailer 6$1,403 AUD
Retailer 3$1,435 AUD
Retailer 5$1,476 AUD
Retailer 11$1,530 AUD
Retailer 14$1,530 AUD
Retailer 7$1,779 AUD
Retailer 4$2,034 AUD
Retailer 2$2,356 AUD
Retailer 12$2,451 AUD
Retailer 9$3,403 AUD
Retailer 13$4,300 AUD
Retailer 8$5,194 AUD
Brilliant Earth$11,458 AUD

43 data points across 14 retailers

16 retailers$1,318 AUD to $11,458 AUD

A
Cheapest Retailer
-
$1,318 AUD
$926 USD
A
Retailer 2
-
$1,435 AUD
$1,008 USD
View
A
Retailer 3
-
$1,476 AUD
$1,037 USD
View
Final sale: no returns
A
Retailer 4
-
$1,530 AUD
$1,075 USD
View
Retailer 5
-
$1,530 AUD
$1,075 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
$1,779 AUD
$1,250 USD
View
B+
Retailer 7
-
$2,034 AUD
$1,429 USD
View
B+
Retailer 8
-
$2,356 AUD
£1,303 GBP
View
B+
Retailer 9
-
$2,451 AUD
$1,722 USD
View
B
Retailer 10
-
$3,403 AUD
$2,391 USD
View
B
Retailer 11
-
$4,300 AUD
$3,021 USD
View
B
Retailer 12
-
$4,766 AUD
$3,348 USD
View
B
Retailer 13
-
$5,194 AUD
£2,873 GBP
View
B
Retailer 14
-
$5,319 AUD
$3,737 USD
View
B
Retailer 15
-
$9,019 AUD
HK$49,500 HKD
View
Most Expensive
B
Brilliant Earth
17976517A · Oct 29
$11,458 AUD
$8,050 USD
View
15 more retailers have this diamond
Prices start from $1,318 AUDSave up to $10,140 AUD

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
$1,318 AUD