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Emerald|Lab Grown|IGI

1.71ct D SI2 Emerald Lab Grown Diamond

ID • D/SI2 • IGI LG517213703

Shape and cutting style on the report: Emerald cut

Certificate IGI LG517213703

Diamond specifications and retailer prices

From £150 GBP
$201 USD
As of October 30, 2026
Save £850 GBP (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,000 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.71ct lab-grown emerald diamond

This 1.71ct lab-grown emerald sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG517213703 or 517213703. Listed at 14 retailers as of October 30, 2026, with prices from £150 to £1,000, a £850 spread on the same certified stone. Brilliant Earth lists it at £1,000. 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

1.71
Carat
D
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29°
Pavilion angle42.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG517213703
Dimensions7.87 × 5.57 × 3.98 mm
L/W Ratio1.41
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
7.87 mm5.57 mm1.71 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG517213703
Side View
Table 61.5%Crown 29°Girdle: MediumPavilion 42.4°Culet: LNGDepth 71.5%

Caratlytics Score

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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 30
Current: £1,000 GBP|Low: £143 GBP|High: £1,425 GBP|Avg: £439 GBP|-29.8%
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
November 1, 2026
Retailer 3£150 GBP
Retailer 13£168 GBP
Retailer 12£174 GBP
Retailer 8£186 GBP
Retailer 5£222 GBP
Retailer 11£252 GBP
Retailer 2£341 GBP
Retailer 9£384 GBP
Retailer 7£401 GBP
Retailer 6£477 GBP
Retailer 10£598 GBP
Retailer 4£890 GBP
Brilliant Earth£1,000 GBP

45 data points across 13 retailers

14 retailers£150 GBP to £1,000 GBP

A
Cheapest Retailer
-
£150 GBP
$201 USD
A
Retailer 2
-
£168 GBP
$225 USD
View
Final sale: no returns
A
Retailer 3
-
£174 GBP
$233 USD
View
A
Retailer 4
-
£186 GBP
$249 USD
View
A
Retailer 5
-
£222 GBP
$297 USD
View
B+
Retailer 6
-
£252 GBP
$338 USD
View
A
Retailer 7
-
£341 GBP
View
B+
Retailer 8
-
£384 GBP
$514 USD
View
B+
Retailer 9
-
£401 GBP
€512 EUR
View
B+
Retailer 10
-
£477 GBP
$639 USD
View
B+
Retailer 11
-
£598 GBP
$801 USD
View
Retailer 12
-
£801 GBP
$1,074 USD
View
Price last confirmed 76 days ago
B
Retailer 13
-
£890 GBP
View
Most Expensive
B
Brilliant Earth
11260547A · Oct 31
£1,000 GBP
$1,340 USD
View
13 more retailers have this diamond
Prices start from £150 GBPSave up to £850 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
1.71ct Emerald
£150 GBP