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Radiant|Lab Grown|IGI

1.78ct I VVS2 Radiant Lab Grown Diamond

ID • I/VVS2 • IGI LG487108788

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG487108788

Diamond specifications and retailer prices

From $1,270 USD
As of November 2, 2026
Save $2,468 USD (66%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,313 USD at Flawless Fine Jewelry · As of November 3, 2026
View at Flawless Fine Jewelry

About this 1.78ct lab-grown radiant diamond

This 1.78ct lab-grown radiant sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG487108788 or 487108788. Listed at 12 retailers as of November 2, 2026, with a 194% 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
I
Color
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.8°
Pavilion angle29.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG487108788
Dimensions8.07 × 6.01 × 3.98 mm
L/W Ratio1.34
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.07 mm6.01 mm1.78 ctI / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG487108788
Side View
Table 64.5%Crown 44.8°Girdle: MediumPavilion 29.3°Culet: NoneDepth 66.2%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: $4,313 USD|Low: $1,270 USD|High: $6,578 USD|Avg: $3,207 USD
Flawless Fine Jewelry
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 3, 2026
Retailer 7$1,270 USD
Retailer 9$1,962 USD
Retailer 13$2,135 USD
Retailer 10$2,276 USD
Retailer 5$2,441 USD
Retailer 3$2,445 USD
Retailer 4$2,913 USD
Retailer 12$3,129 USD
Retailer 11$3,564 USD
Retailer 8$3,738 USD
Retailer 2$4,197 USD
Flawless Fine Jewelry$4,313 USD
Retailer 6$6,501 USD

22 data points across 13 retailers

12 retailers$1,270 USD to $3,738 USD

B+
Cheapest Retailer
-
$1,270 USD
B
Retailer 2
-
$1,962 USD
View
B
Retailer 3
-
$2,135 USD
View
Retailer 4
-
$2,276 USD
View
Price last confirmed 24 days ago
B
Retailer 5
-
$2,276 USD
View
B
Retailer 6
-
$2,445 USD
View
B
Retailer 7
-
$3,129 USD
View
B
Retailer 8
-
$3,564 USD
View
B
Retailer 9
-
$3,738 USD
View
Retailer 10
-
$4,197 USD
View
Price under review
Most Expensive
Flawless Fine Jewelry
18DE7A6D6 · Nov 3
$4,313 USD
£3,396 GBP
View
Price under review
10 more retailers have this diamond
Prices start from $1,270 USDSave up to $2,468 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.

B+
1.78ct Radiant
$1,270 USD