Emerald|Lab Grown|IGI

1.00ct D SI1 Emerald Lab Grown Diamond

ID • D/SI1 • IGI LG523291787

Shape and cutting style on the report: Emerald cut

Certificate IGI LG523291787

Diamond specifications and retailer prices

From €126 EUR
$141 USD
As of October 29, 2026
Save €610 EUR (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €841 EUR at Brilliant Earth · As of October 15, 2026
View at Brilliant Earth

About this 1ct lab-grown emerald diamond

This 1ct lab-grown emerald sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG523291787 or 523291787. Listed at 17 retailers as of October 29, 2026, with a 484% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.00
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.3°
Pavilion angle44.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG523291787
Dimensions6.56 × 4.86 × 3.22 mm
L/W Ratio1.35
Culet sizeLong
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
6.56 mm4.86 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG523291787
Side View
Table 69.0%Crown 29.3°Girdle: MediumPavilion 44.2°Culet: LNGDepth 66.3%

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 29
Current: €841 EUR|Low: €122 EUR|High: €868 EUR|Avg: €347 EUR|-3.1%
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
October 31, 2026
Retailer 10€126 EUR
Retailer 4€141 EUR
Retailer 11€157 EUR
Retailer 12€157 EUR
Retailer 3€213 EUR
Retailer 2€269 EUR
Retailer 5€295 EUR
Retailer 9€298 EUR
Retailer 7€300 EUR
Retailer 6€373 EUR
Retailer 13€376 EUR
Retailer 8€737 EUR
Brilliant Earth€841 EUR

43 data points across 13 retailers

17 retailers€126 EUR to €737 EUR

A
Cheapest Retailer
-
€126 EUR
$141 USD
A
Retailer 2
-
€141 EUR
$158 USD
View
Final sale: no returns
A
Retailer 3
-
€147 EUR
$164 USD
View
A
Retailer 4
-
€157 EUR
$175 USD
View
A
Retailer 5
-
€157 EUR
$175 USD
View
B+
Retailer 6
-
€213 EUR
$238 USD
View
A
Retailer 7
-
€269 EUR
£236 GBP
View
B+
Retailer 8
-
€295 EUR
$330 USD
View
A
Retailer 9
-
€298 EUR
£262 GBP
View
B+
Retailer 10
-
€300 EUR
View
B+
Retailer 11
-
€373 EUR
$417 USD
View
B+
Retailer 12
-
€376 EUR
$420 USD
View
B+
Retailer 13
-
€462 EUR
£406 GBP
View
B+
Retailer 14
-
€504 EUR
$563 USD
View
B
Retailer 15
-
€554 EUR
$619 USD
View
B
Retailer 16
-
€737 EUR
£648 GBP
View
Most Expensive
Brilliant Earth
16211415A · Oct 15
€841 EUR
$940 USD
View
Price last confirmed 16 days ago
16 more retailers have this diamond
Prices start from €126 EURSave up to €610 EUR

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
1.00ct Emerald
€126 EUR