CaratHunter
Plans
Radiant|Lab Grown|IGI

1.51ct D SI1 Radiant Lab Grown Diamond

EX • D/SI1 • IGI LG514284333

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

Certificate IGI LG514284333

Diamond specifications and retailer prices

From £583 GBP
As of November 5, 2026
12 retailers carry this diamond
Most expensive: £1,278 GBP at Do Amore Diamonds · As of October 28, 2026
View at Do Amore Diamonds

About this 1.51ct lab-grown radiant diamond

This 1.51ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG514284333 or 514284333. Listed at 12 retailers as of November 5, 2026. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.9°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG514284333
Dimensions8.08 × 5.65 × 3.86 mm
L/W Ratio1.43
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.08 mm5.65 mm1.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG514284333
Side View
Table 67.0%Crown 42.9°Girdle: Slightly ThickPavilion 36.4°Culet: NoneDepth 68.3%

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 5
Current: £1,278 GBP|Low: £125 GBP|High: £1,278 GBP|Avg: £452 GBP|+2.4%
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
October 28, 2026
Retailer 2£133 GBP
Retailer 5£145 GBP
Retailer 13£151 GBP
Retailer 14£218 GBP
Retailer 4£257 GBP
Retailer 6£288 GBP
Retailer 11£291 GBP
Retailer 7£367 GBP
Retailer 12£548 GBP
Retailer 3£572 GBP
Retailer 8£615 GBP
Retailer 10£833 GBP
Retailer 9£1,098 GBP
Do Amore Diamonds£1,278 GBP

26 data points across 14 retailers

12 retailers

Retailer 1
-
£133 GBP
Price last confirmed 11 days ago
Retailer 2
-
£151 GBP
View
Price last confirmed 14 days ago
Retailer 3
-
£218 GBP
View
Price last confirmed 13 days ago
Retailer 4
-
£257 GBP
View
Price last confirmed 12 days ago
Retailer 5
-
£367 GBP
View
Price last confirmed 11 days ago
Retailer 6
-
£548 GBP
View
Price last confirmed 12 days ago
Retailer 7
-
£572 GBP
View
Price last confirmed 13 days ago
B+
Retailer 8
-
£583 GBP
View
Retailer 9
-
£833 GBP
View
Price last confirmed 13 days ago
Retailer 10
-
£1,098 GBP
View
Price last confirmed 10 days ago
Most Expensive
Do Amore Diamonds
27-BBC1EEF44 · Oct 28
£1,278 GBP
$1,710 USD
View
Price last confirmed 9 days ago
10 more retailers have this diamond
Prices start from £583 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.

B+
1.51ct Radiant
£583 GBP