Oval|Lab Grown|IGI

1.78ct F VS1 Oval Lab Grown Diamond

ID • F/VS1 • IGI LG818648759

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG818648759

Diamond specifications and retailer prices

From $429 USD
As of October 30, 2026
Save $1,951 USD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,380 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.78ct lab-grown oval diamond

This 1.78ct lab-grown oval sits in the one-and-a-half to two carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818648759 or 818648759. Listed at 13 retailers as of October 30, 2026, with prices from $429 to $2,380, a $1,951 spread on the same certified stone. Brilliant Earth lists it at $2,380. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
F
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818648759
Dimensions10.05 × 6.55 × 4.17 mm
L/W Ratio1.53
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.05 mm6.55 mm1.78 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818648759
Side View
Table 62.0%Crown 34.7°Girdle: STK-THKPavilion 41.2°Culet: NoneDepth 63.7%

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: $2,380 USD|Low: $276 USD|High: $2,380 USD|Avg: $915 USD|+39.2%
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
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 9$429 USD
Retailer 13$475 USD
Retailer 12$531 USD
Retailer 14$577 USD
Retailer 2$630 USD
Retailer 16$686 USD
Retailer 3$723 USD
Retailer 15$728 USD
Retailer 5$1,006 USD
Retailer 4$1,052 USD
Retailer 11$1,058 USD
Retailer 6$1,261 USD
Retailer 8$1,267 USD
Retailer 7$1,330 USD
Retailer 10$1,777 USD
Brilliant Earth$2,380 USD

18 data points across 16 retailers

13 retailers$429 USD to $2,380 USD

Retailer 1
-
$241 USD
Price last confirmed 30 days ago
Retailer 2
-
$291 USD
View
Price last confirmed 36 days ago
Retailer 3
-
$307 USD
View
Price last confirmed 32 days ago
A
Retailer 4
-
$429 USD
View
Final sale: no returns
Retailer 5
-
$531 USD
ZAR 8,585 ZAR
View
Price last confirmed 31 days ago
A
Retailer 6
-
$630 USD
View
Retailer 7
-
$728 USD
View
Price last confirmed 29 days ago
Retailer 8
-
$1,001 USD
View
Price last confirmed 32 days ago
Retailer 9
-
$1,006 USD
SGD 1,359 SGD
View
Price last confirmed 31 days ago
Retailer 10
-
$1,058 USD
A$1,628 AUD
View
Price last confirmed 30 days ago
Retailer 11
-
$1,330 USD
View
Price last confirmed 34 days ago
B
Retailer 12
-
$1,777 USD
View
Most Expensive
B
Brilliant Earth
22267493A · Oct 31
$2,380 USD
View
12 more retailers have this diamond
Prices start from $429 USDSave up to $1,951 USD

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 Oval
$429 USD