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Emerald|Lab Grown|IGI

1.78ct D IF Emerald Lab Grown Diamond

ID • D/IF • IGI LG812621755

Shape and cutting style on the report: Emerald cut

Certificate IGI LG812621755

Diamond specifications and retailer prices

From $423 SGD
$331 USD
As of October 30, 2026
Save $3,335 SGD (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,760 SGD at Rare Carat · As of September 16, 2026
View at Rare Carat

About this 1.78ct lab-grown emerald diamond

This 1.78ct lab-grown emerald sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG812621755 or 812621755. Listed at 17 retailers as of October 29, 2026, with a 788% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.5°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812621755
Dimensions8.22 × 5.73 × 3.81 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
8.22 mm5.73 mm1.78 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812621755
Side View
Table 63.0%Crown 31.5°Girdle: MediumPavilion 40.1°Culet: LargeDepth 66.5%

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: $3,760 SGD|Low: $340 SGD|High: $3,760 SGD|Avg: $1,394 SGD
Rare Carat
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 29, 2026
Retailer 11$363 SGD
Retailer 16$423 SGD
Retailer 7$473 SGD
Retailer 6$525 SGD
Retailer 17$525 SGD
Retailer 15$793 SGD
Retailer 8$849 SGD
Retailer 12$902 SGD
Retailer 10$922 SGD
Retailer 9$1,189 SGD
Retailer 2$1,223 SGD
Retailer 3$1,363 SGD
Retailer 14$1,539 SGD
Retailer 19$1,893 SGD
Retailer 18$1,928 SGD
Retailer 5$1,983 SGD
Retailer 13$2,106 SGD
Retailer 4$3,758 SGD
Rare Carat$3,760 SGD

24 data points across 19 retailers

17 retailers$423 SGD to $3,758 SGD

A
Cheapest Retailer
-
$423 SGD
$331 USD
A
Retailer 2
-
$473 SGD
$370 USD
View
Final sale: no returns
A
Retailer 3
-
$525 SGD
$411 USD
View
A
Retailer 4
-
$525 SGD
$411 USD
View
A
Retailer 5
-
$793 SGD
$620 USD
View
A
Retailer 6
-
$849 SGD
$664 USD
View
A
Retailer 7
-
$902 SGD
ZAR 11,397 ZAR
View
Retailer 8
-
$1,189 SGD
$930 USD
View
Price last confirmed 29 days ago
A
Retailer 9
-
$1,223 SGD
A$1,472 AUD
View
A
Retailer 10
-
$1,363 SGD
$1,066 USD
View
B+
Retailer 11
-
$1,539 SGD
$1,204 USD
View
B+
Retailer 12
-
$1,893 SGD
$1,481 USD
View
B+
Retailer 13
-
$1,928 SGD
$1,508 USD
View
B+
Retailer 14
-
$1,983 SGD
$1,551 USD
View
B+
Retailer 15
-
$2,106 SGD
£1,297 GBP
View
B
Retailer 16
-
$3,758 SGD
$2,940 USD
View
Most Expensive
Rare Carat
C388-1A · Sep 16
$3,760 SGD
$2,941 USD
View
Price last confirmed 44 days ago
16 more retailers have this diamond
Prices start from $423 SGDSave up to $3,335 SGD

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
1.78ct Emerald
$423 SGD