Emerald|Lab Grown|IGI

0.99ct D SI1 Emerald Lab Grown Diamond

ID • D/SI1 • IGI LG691541093

Shape and cutting style on the report: Emerald cut

Certificate IGI LG691541093

Diamond specifications and retailer prices

From £343 GBP
$460 USD
As of October 28, 2026
Save £11 GBP (3%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £373 GBP at Rare Carat · As of August 9, 2026
View at Rare Carat

About this 0.99ct lab-grown emerald diamond

This 0.99ct lab-grown emerald sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG691541093 or 691541093. Listed at 22 retailers as of October 28, 2026, with a relatively tight 3% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

0.99
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691541093
Dimensions6.75 × 4.73 × 3.18 mm
L/W Ratio1.43
Culet sizeLarge
Top View
6.75 mm4.73 mm0.99 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691541093
Side View
Table 66.0%Crown 35.6°Girdle: MediumPavilion 39.3°Culet: LargeDepth 67.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £343 GBP|Low: £343 GBP|High: £358 GBP|Avg: £352 GBP|-4.2%
October 28, 2026
Rare Carat£343 GBP

4 data points across 1 retailer

22 retailers£343 GBP to £355 GBP

Retailer 1
-
£334 GBP
$448 USD
Price last confirmed 74 days ago
Retailer 2
-
£339 GBP
$454 USD
View
Price last confirmed 51 days ago
Retailer 3
-
£341 GBP
$458 USD
View
Price last confirmed 74 days ago
B+
Retailer 4
-
£343 GBP
$460 USD
View
B+
Retailer 5
-
£351 GBP
$470 USD
View
B+
Retailer 6
-
£351 GBP
$470 USD
View
B+
Retailer 7
-
£351 GBP
$470 USD
View
B+
Retailer 8
-
£351 GBP
$470 USD
View
B+
Retailer 9
-
£351 GBP
$470 USD
View
B+
Retailer 10
-
£351 GBP
$470 USD
View
B+
Retailer 11
-
£351 GBP
$470 USD
View
B+
Retailer 12
-
£351 GBP
$470 USD
View
B+
Retailer 13
-
£351 GBP
$470 USD
View
B+
Retailer 14
-
£351 GBP
$470 USD
View
B+
Retailer 15
-
£355 GBP
$475 USD
View
B+
Retailer 16
-
£355 GBP
$475 USD
View
B+
Retailer 17
-
£355 GBP
$475 USD
View
B+
Retailer 18
-
£355 GBP
$475 USD
View
Retailer 19
-
£373 GBP
$499 USD
View
Price last confirmed 82 days ago
Retailer 20
-
£373 GBP
$499 USD
View
Price last confirmed 82 days ago
Retailer 21
-
£373 GBP
$499 USD
View
Price last confirmed 82 days ago
Most Expensive
Rare Carat
16287 · Aug 9
£373 GBP
$499 USD
View
Price last confirmed 82 days ago
21 more retailers have this diamond
Prices start from £343 GBPSave up to £11 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.

B+
0.99ct Emerald
£343 GBP