Radiant|Lab Grown|IGI

1.55ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG655451354

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

Certificate IGI LG655451354

Diamond specifications and retailer prices

From £532 GBP
$714 USD
As of October 30, 2026
Save £2,859 GBP (84%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £4,725 GBP at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG655451354 or 655451354. Listed at 26 retailers as of October 30, 2026, with a 537% 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.4°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG655451354
Dimensions8.04 × 5.70 × 3.85 mm
L/W Ratio1.41
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.04 mm5.70 mm1.55 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG655451354
Side View
Table 67.0%Crown 44.4°Girdle: Slightly ThickPavilion 34.7°Culet: NoneDepth 67.5%

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: £4,725 GBP|Low: £511 GBP|High: £4,725 GBP|Avg: £1,571 GBP
Do Amore Diamonds
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
November 2, 2026
Retailer 6£532 GBP
Retailer 7£617 GBP
Retailer 16£617 GBP
Retailer 13£749 GBP
Retailer 10£770 GBP
Retailer 8£872 GBP
Retailer 2£1,045 GBP
Retailer 15£1,253 GBP
Retailer 14£1,481 GBP
Retailer 3£1,521 GBP
Retailer 12£1,697 GBP
Retailer 4£2,095 GBP
Retailer 5£2,104 GBP
Retailer 9£2,554 GBP
Retailer 11£3,391 GBP
Do Amore Diamonds£4,725 GBP

38 data points across 16 retailers

26 retailers£532 GBP to £3,391 GBP

Retailer 1
-
£532 GBP
$714 USD
Price last confirmed 25 days ago
A
Retailer 2
-
£532 GBP
$714 USD
View
Retailer 3
-
£579 GBP
$777 USD
View
Price last confirmed 36 days ago
Retailer 4
-
£617 GBP
$828 USD
View
Price last confirmed 30 days ago
Retailer 5
-
£617 GBP
$828 USD
View
Price last confirmed 16 days ago
A
Retailer 6
-
£638 GBP
$856 USD
View
Final sale: no returns
A
Retailer 7
-
£682 GBP
$915 USD
View
A
Retailer 8
-
£730 GBP
$980 USD
View
A
Retailer 9
-
£749 GBP
$1,005 USD
View
A
Retailer 10
-
£770 GBP
View
B+
Retailer 11
-
£872 GBP
$1,170 USD
View
B+
Retailer 12
-
£1,045 GBP
View
B+
Retailer 13
-
£1,253 GBP
ZAR 27,156 ZAR
View
B+
Retailer 14
-
£1,481 GBP
A$3,058 AUD
View
Retailer 15
-
£1,521 GBP
$2,041 USD
View
Price last confirmed 7 days ago
B
Retailer 16
-
£1,697 GBP
A$3,503 AUD
View
Retailer 17
-
£1,916 GBP
$2,571 USD
View
Price last confirmed 33 days ago
B
Retailer 18
-
£1,916 GBP
$2,571 USD
View
B
Retailer 19
-
£2,095 GBP
$2,811 USD
View
B
Retailer 20
-
£2,104 GBP
$2,824 USD
View
B
Retailer 21
-
£2,112 GBP
View
B
Retailer 22
-
£2,321 GBP
View
B
Retailer 23
-
£2,435 GBP
$3,268 USD
View
B
Retailer 24
-
£2,554 GBP
View
B
Retailer 25
-
£3,391 GBP
$4,550 USD
View
Most Expensive
Do Amore Diamonds
27-D60FBC30F · Nov 1
£4,725 GBP
$6,340 USD
View
Price under review
25 more retailers have this diamond
Prices start from £532 GBPSave up to £2,859 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
£532 GBP