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Emerald|Lab Grown|IGI

1.09ct D SI1 Emerald Lab Grown Diamond

ID • D/SI1 • IGI LG777621405

Shape and cutting style on the report: Emerald cut

Certificate IGI LG777621405

Diamond specifications and retailer prices

From £136 GBP
As of November 6, 2026
Save £1,172 GBP (90%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,367 GBP at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

About this 1.09ct lab-grown emerald diamond

This 1.09ct 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 LG777621405 or 777621405. Listed at 17 retailers as of November 4, 2026, with a 862% 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

1.09
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.6°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG777621405
Dimensions7.02 × 4.82 × 3.20 mm
L/W Ratio1.46
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
7.02 mm4.82 mm1.09 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG777621405
Side View
Table 64.0%Crown 29.6°Girdle: MediumPavilion 40°Culet: LargeDepth 66.4%

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: £1,367 GBP|Low: £99 GBP|High: £1,367 GBP|Avg: £415 GBP
Do Amore Diamonds
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
November 6, 2026
Retailer 7£99 GBP
Retailer 12£136 GBP
Retailer 5£152 GBP
Retailer 3£158 GBP
Retailer 13£169 GBP
Retailer 15£169 GBP
Retailer 6£229 GBP
Retailer 2£339 GBP
Retailer 9£390 GBP
Retailer 4£405 GBP
Retailer 11£574 GBP
Retailer 14£600 GBP
Retailer 10£780 GBP
Retailer 8£869 GBP
Do Amore Diamonds£1,367 GBP

45 data points across 15 retailers

17 retailers£136 GBP to £1,308 GBP

A
Cheapest Retailer
-
£136 GBP
A
Retailer 2
-
£152 GBP
View
Final sale: no returns
A
Retailer 3
-
£158 GBP
View
A
Retailer 4
-
£169 GBP
View
Retailer 5
-
£169 GBP
View
Price last confirmed 12 days ago
B+
Retailer 6
-
£229 GBP
View
B+
Retailer 7
-
£339 GBP
View
B+
Retailer 8
-
£390 GBP
View
B+
Retailer 9
-
£405 GBP
View
B
Retailer 10
-
£574 GBP
View
B
Retailer 11
-
£600 GBP
View
B
Retailer 12
-
£727 GBP
View
B
Retailer 13
-
£780 GBP
View
B
Retailer 14
-
£848 GBP
View
B
Retailer 15
-
£869 GBP
View
B
Retailer 16
-
£1,308 GBP
View
Most Expensive
Do Amore Diamonds
23-777621405 · Nov 4
£1,367 GBP
$1,840 USD
View
Price under review
16 more retailers have this diamond
Prices start from £136 GBPSave up to £1,172 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
1.09ct Emerald
£136 GBP