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Radiant|Lab Grown|IGI

1.55ct D VVS1 Radiant Lab Grown Diamond

ID • D/VVS1 • IGI LG685577823

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

Certificate IGI LG685577823

Diamond specifications and retailer prices

From £193 GBP
$259 USD
As of November 2, 2026
Save £1,790 GBP (90%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,259 GBP at Brilliant Earth · As of October 16, 2026
View at Brilliant Earth

About this 1.55ct lab-grown radiant diamond

This 1.55ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG685577823 or 685577823. Listed at 21 retailers as of November 2, 2026, with a 927% 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

1.55
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.3°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685577823
Dimensions8.17 × 5.75 × 3.80 mm
L/W Ratio1.42
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.17 mm5.75 mm1.55 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685577823
Side View
Table 64.0%Crown 46.3°Girdle: MediumPavilion 34.3°Culet: NoneDepth 66.1%

Caratlytics Score

How it works →
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: Nov 2
Current: £2,259 GBP|Low: £193 GBP|High: £2,259 GBP|Avg: £643 GBP
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
Retailer 17
Retailer 18
Retailer 19
November 3, 2026
Retailer 7£193 GBP
Retailer 9£215 GBP
Retailer 17£224 GBP
Retailer 10£239 GBP
Retailer 19£239 GBP
Retailer 18£321 GBP
Retailer 16£358 GBP
Retailer 6£411 GBP
Retailer 14£455 GBP
Retailer 2£466 GBP
Retailer 15£614 GBP
Retailer 13£682 GBP
Retailer 11£849 GBP
Retailer 4£940 GBP
Retailer 8£972 GBP
Retailer 5£1,023 GBP
Retailer 12£1,058 GBP
Retailer 3£1,715 GBP
Brilliant Earth£2,259 GBP

42 data points across 19 retailers

21 retailers£193 GBP to £1,983 GBP

A
Cheapest Retailer
-
£193 GBP
$259 USD
A
Retailer 2
-
£215 GBP
$288 USD
View
Final sale: no returns
A
Retailer 3
-
£224 GBP
$300 USD
View
A
Retailer 4
-
£239 GBP
$321 USD
View
Retailer 5
-
£239 GBP
$321 USD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
£321 GBP
$430 USD
View
A
Retailer 7
-
£358 GBP
$480 USD
View
A
Retailer 8
-
£411 GBP
$551 USD
View
A
Retailer 9
-
£455 GBP
ZAR 9,859 ZAR
View
A
Retailer 10
-
£466 GBP
View
B+
Retailer 11
-
£614 GBP
A$1,266 AUD
View
B+
Retailer 12
-
£682 GBP
$915 USD
View
B+
Retailer 13
-
£849 GBP
$1,138 USD
View
B+
Retailer 14
-
£895 GBP
View
B+
Retailer 15
-
£940 GBP
$1,261 USD
View
B
Retailer 16
-
£972 GBP
$1,304 USD
View
B
Retailer 17
-
£1,023 GBP
View
B+
Retailer 18
-
£1,058 GBP
View
B
Retailer 19
-
£1,715 GBP
$2,300 USD
View
B
Retailer 20
-
£1,983 GBP
$2,660 USD
View
Most Expensive
Brilliant Earth
14328414Y · Oct 16
£2,259 GBP
$3,030 USD
View
Price last confirmed 18 days ago
20 more retailers have this diamond
Prices start from £193 GBPSave up to £1,790 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
1.55ct Radiant
£193 GBP