Radiant|Lab Grown|IGI

8.55ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG840648354

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

Certificate IGI LG840648354

Diamond specifications and retailer prices

From $2,744 USD
As of October 30, 2026
Save $8,951 USD (77%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $16,415 USD at Helzberg Diamonds · As of October 13, 2026
View at Helzberg Diamonds

About this 8.55ct lab-grown radiant diamond

This 8.55ct lab-grown radiant sits in the over five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG840648354 or 840648354. Listed at 23 retailers as of October 30, 2026, with a 326% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

8.55
Carat
D
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840648354
Dimensions15.47 × 9.81 × 6.18 mm
L/W Ratio1.58
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.47 mm9.81 mm8.55 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840648354
Side View
Table 66.0%Crown 43°Girdle: ThickPavilion 31.9°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $9,231 USD|Low: $2,744 USD|High: $11,861 USD|Avg: $5,611 USD
Retailer 1
Retailer 2
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Retailer 4
Retailer 5
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Retailer 7
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Retailer 12
Retailer 13
Retailer 14
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Retailer 18
Retailer 19
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Retailer 21
October 31, 2026
Retailer 14$2,744 USD
Retailer 20$2,986 USD
Retailer 8$3,074 USD
Retailer 11$3,183 USD
Retailer 4$3,345 USD
Retailer 2$3,486 USD
Retailer 16$3,799 USD
Retailer 15$4,300 USD
Retailer 10$4,376 USD
Retailer 19$4,550 USD
Retailer 3$4,671 USD
Retailer 12$4,815 USD
Retailer 17$5,339 USD
Retailer 6$5,486 USD
Retailer 7$5,908 USD
Retailer 5$6,855 USD
Retailer 18$8,569 USD
Retailer 1$9,231 USD
Retailer 9$11,097 USD
Retailer 13$11,260 USD
Retailer 21$11,695 USD

19 data points across 21 retailers

23 retailers$2,744 USD to $11,695 USD

A
Cheapest Retailer
-
$2,744 USD
A
Retailer 2
-
$2,986 USD
View
A
Retailer 3
-
$3,074 USD
View
Final sale: no returns
A
Retailer 4
-
$3,183 USD
View
A
Retailer 5
-
$3,345 USD
View
A
Retailer 6
-
$3,486 USD
View
B+
Retailer 7
-
$3,799 USD
£2,992 GBP
View
B+
Retailer 8
-
$4,300 USD
£3,386 GBP
View
B+
Retailer 9
-
$4,376 USD
View
B+
Retailer 10
-
$4,550 USD
View
B+
Retailer 11
-
$4,671 USD
View
B+
Retailer 12
-
$4,815 USD
€4,586 EUR
View
B+
Retailer 13
-
$5,339 USD
ZAR 86,251 ZAR
View
B+
Retailer 14
-
$5,486 USD
£4,320 GBP
View
Retailer 15
-
$5,908 USD
A$9,089 AUD
View
Price last confirmed 9 days ago
B+
Retailer 16
-
$6,855 USD
View
B
Retailer 17
-
$8,110 USD
View
B
Retailer 18
-
$8,569 USD
£6,747 GBP
View
B
Retailer 19
-
$9,231 USD
A$14,201 AUD
View
B
Retailer 20
-
$11,097 USD
View
B
Retailer 21
-
$11,260 USD
SGD 15,216 SGD
View
B
Retailer 22
-
$11,695 USD
View
Most Expensive
Helzberg Diamonds
ZXZOKGMKOJLK · Oct 13
$16,415 USD
View
Price last confirmed 18 days ago
22 more retailers have this diamond
Prices start from $2,744 USDSave up to $8,951 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
8.55ct Radiant
$2,744 USD