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Emerald|Lab Grown|IGI

1.00ct D SI1 Emerald Lab Grown Diamond

ID • D/SI1 • IGI LG821667302

Shape and cutting style on the report: Emerald cut

Certificate IGI LG821667302

Diamond specifications and retailer prices

From £103 GBP
As of November 6, 2026
Save £639 GBP (86%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £742 GBP at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

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 LG821667302 or 821667302. Listed at 16 retailers as of November 4, 2026, with prices from £103 to £742, a £639 spread on the same certified stone. Reve Diamonds lists it at £742. 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
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821667302
Dimensions6.76 × 4.73 × 3.26 mm
L/W Ratio1.43
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
6.76 mm4.73 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821667302
Side View
Table 66.0%Crown 34.5°Girdle: MediumPavilion 40.6°Culet: LargeDepth 68.9%

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: Nov 6
Current: £216 GBP|Low: £97 GBP|High: £1,058 GBP|Avg: £316 GBP|+5.1%
Retailer 1
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
Retailer 15
Reve Diamonds
November 6, 2026
Retailer 3£103 GBP
Retailer 14£120 GBP
Retailer 10£124 GBP
Retailer 7£126 GBP
Retailer 12£128 GBP
Retailer 1£216 GBP
Retailer 5£220 GBP
Retailer 15£239 GBP
Retailer 2£243 GBP
Retailer 9£305 GBP
Retailer 11£334 GBP
Retailer 13£412 GBP
Retailer 4£452 GBP
Retailer 6£550 GBP
Retailer 8£597 GBP
Reve Diamonds£742 GBP

44 data points across 16 retailers

16 retailers£103 GBP to £742 GBP

A
Cheapest Retailer
-
£103 GBP
A
Retailer 2
-
£120 GBP
View
A
Retailer 3
-
£124 GBP
View
Final sale: no returns
Retailer 4
-
£126 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£128 GBP
View
A
Retailer 6
-
£216 GBP
View
Retailer 7
-
£220 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£239 GBP
View
A
Retailer 9
-
£243 GBP
View
B+
Retailer 10
-
£305 GBP
View
B+
Retailer 11
-
£334 GBP
View
B
Retailer 12
-
£412 GBP
View
B
Retailer 13
-
£452 GBP
View
Retailer 14
-
£550 GBP
View
Price last confirmed 21 days ago
B
Retailer 15
-
£597 GBP
View
Most Expensive
B
Reve Diamonds
E17B59513 · Nov 4
£742 GBP
$999 USD
View
15 more retailers have this diamond
Prices start from £103 GBPSave up to £639 GBP

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
£103 GBP