Emerald|Lab Grown|IGI

0.51ct D IF Emerald Lab Grown Diamond

ID • D/IF • IGI LG670422659

Shape and cutting style on the report: Emerald cut

Certificate IGI LG670422659

Diamond specifications and retailer prices

From £128 GBP
$171 USD
As of October 25, 2026
Save £616 GBP (83%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £744 GBP at Reve Diamonds · As of October 25, 2026
View at Reve Diamonds

About this 0.51ct lab-grown emerald diamond

This 0.51ct lab-grown emerald sits in the half to three-quarter carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG670422659 or 670422659. Listed at 24 retailers as of October 25, 2026, with prices from £128 to £744, a £616 spread on the same certified stone. Reve Diamonds lists it at £744. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG670422659
Dimensions5.32 × 3.78 × 2.57 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
5.32 mm3.78 mm0.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG670422659
Side View
Table 61.0%Crown 32°Girdle: STK-THKPavilion 39.5°Culet: LNGDepth 68.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 25
Current: £258 GBP|Low: £100 GBP|High: £747 GBP|Avg: £324 GBP
Retailer 1
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Retailer 21
Reve Diamonds
October 28, 2026
Retailer 13£100 GBP
Retailer 5£115 GBP
Retailer 21£119 GBP
Retailer 3£128 GBP
Retailer 16£128 GBP
Retailer 18£211 GBP
Retailer 19£227 GBP
Retailer 11£240 GBP
Retailer 15£248 GBP
Retailer 1£258 GBP
Retailer 4£296 GBP
Retailer 20£315 GBP
Retailer 12£326 GBP
Retailer 9£358 GBP
Retailer 6£388 GBP
Retailer 7£402 GBP
Retailer 8£411 GBP
Retailer 2£434 GBP
Retailer 10£453 GBP
Retailer 17£598 GBP
Retailer 14£671 GBP
Reve Diamonds£744 GBP

37 data points across 22 retailers

24 retailers£128 GBP to £744 GBP

Retailer 1
-
£100 GBP
$134 USD
Price last confirmed 29 days ago
Retailer 2
-
£119 GBP
$160 USD
View
Price last confirmed 7 days ago
Retailer 3
-
£121 GBP
$162 USD
View
Price last confirmed 25 days ago
A
Retailer 4
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£128 GBP
$171 USD
View
A
Retailer 5
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£128 GBP
$171 USD
View
Retailer 6
-
£129 GBP
$173 USD
View
Price last confirmed 28 days ago
A
Retailer 7
-
£211 GBP
View
Retailer 8
-
£227 GBP
ZAR 4,924 ZAR
View
Price last confirmed 8 days ago
A
Retailer 9
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£240 GBP
$322 USD
View
B+
Retailer 10
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£248 GBP
€317 EUR
View
B+
Retailer 11
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£258 GBP
$346 USD
View
B+
Retailer 12
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£296 GBP
$397 USD
View
B+
Retailer 13
-
£315 GBP
A$649 AUD
View
B+
Retailer 14
-
£326 GBP
A$671 AUD
View
Retailer 15
-
£358 GBP
$480 USD
View
Price last confirmed 13 days ago
B+
Retailer 16
-
£388 GBP
$520 USD
View
B
Retailer 17
-
£402 GBP
$538 USD
View
B
Retailer 18
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£411 GBP
$551 USD
View
Retailer 19
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£416 GBP
$557 USD
View
Price last confirmed 24 days ago
B
Retailer 20
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£434 GBP
$582 USD
View
B
Retailer 21
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£453 GBP
$606 USD
View
B
Retailer 22
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£598 GBP
View
B
Retailer 23
-
£671 GBP
View
Most Expensive
B
Reve Diamonds
AA4628EE7 · Oct 25
£744 GBP
$996 USD
View
23 more retailers have this diamond
Prices start from £128 GBPSave up to £616 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
0.51ct Emerald
£128 GBP