CaratHunter
Plans
Emerald|Lab Grown|IGI

8.57ct F SI1 Emerald Lab Grown Diamond

ID • F/SI1 • IGI LG647458717

Shape and cutting style on the report: Emerald cut

Certificate IGI LG647458717

Diamond specifications and retailer prices

From $2,111 NZD
$1,190 USD
As of November 1, 2026
Save $9,741 NZD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $11,852 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 8.57ct lab-grown emerald diamond

This 8.57ct lab-grown emerald sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG647458717 or 647458717. Listed at 13 retailers as of October 31, 2026, with prices from $2,111 to $11,852, a $9,741 spread on the same certified stone. Brilliant Earth lists it at $11,852. 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

8.57
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle42.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG647458717
Dimensions13.65 × 9.47 × 6.71 mm
L/W Ratio1.44
Culet sizeLong
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.65 mm9.47 mm8.57 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG647458717
Side View
Table 66.0%Crown 36.5°Girdle: MediumPavilion 42.9°Culet: LNGDepth 70.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $11,852 NZD|Low: $2,111 NZD|High: $12,225 NZD|Avg: $4,812 NZD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 10$2,111 NZD
Retailer 8$2,188 NZD
Retailer 4$2,493 NZD
Retailer 7$3,132 NZD
Retailer 2$3,168 NZD
Retailer 5$3,417 NZD
Retailer 6$4,170 NZD
Retailer 9$7,337 NZD
Retailer 3$7,418 NZD
Brilliant Earth$11,852 NZD

43 data points across 10 retailers

13 retailers$2,111 NZD to $11,852 NZD

Retailer 1
-
$1,886 NZD
$1,063 USD
Price last confirmed 41 days ago
Retailer 2
-
$2,051 NZD
$1,156 USD
View
Price last confirmed 38 days ago
A
Retailer 3
-
$2,111 NZD
$1,190 USD
View
Final sale: no returns
Retailer 4
-
$2,158 NZD
$1,216 USD
View
Price last confirmed 38 days ago
A
Retailer 5
-
$2,493 NZD
$1,405 USD
View
B+
Retailer 6
-
$3,132 NZD
$1,765 USD
View
A
Retailer 7
-
$3,168 NZD
£1,406 GBP
View
B+
Retailer 8
-
$3,417 NZD
€1,834 EUR
View
B+
Retailer 9
-
$4,170 NZD
$2,350 USD
View
B
Retailer 10
-
$7,337 NZD
SGD 5,588 SGD
View
B
Retailer 11
-
$7,418 NZD
£3,292 GBP
View
B
Retailer 12
-
$7,639 NZD
$4,306 USD
View
Most Expensive
B
Brilliant Earth
14242444A · Oct 31
$11,852 NZD
$6,680 USD
View
12 more retailers have this diamond
Prices start from $2,111 NZDSave up to $9,741 NZD

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
8.57ct Emerald
$2,111 NZD