Radiant|Lab Grown|IGI

1.51ct D VS1 Radiant Lab Grown Diamond

VG • D/VS1 • IGI LG687560276

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

Certificate IGI LG687560276

Diamond specifications and retailer prices

From £157 GBP
$211 USD
As of October 30, 2026
Save £910 GBP (85%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £1,067 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG687560276 or 687560276. Listed at 25 retailers as of October 30, 2026, with prices from £157 to £1,067, a £910 spread on the same certified stone. Brilliant Earth lists it at £1,067. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
D
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.5°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687560276
Dimensions6.81 × 6.11 × 4.23 mm
L/W Ratio1.11
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
6.81 mm6.11 mm1.51 ctD / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687560276
Side View
Table 68.0%Crown 41.5°Girdle: MediumPavilion 35.6°Culet: NoneDepth 69.2%

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: £1,067 GBP|Low: £151 GBP|High: £1,343 GBP|Avg: £480 GBP|-20.6%
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
October 31, 2026
Retailer 4£157 GBP
Retailer 12£175 GBP
Retailer 8£182 GBP
Retailer 5£195 GBP
Retailer 9£195 GBP
Retailer 13£276 GBP
Retailer 2£316 GBP
Retailer 16£335 GBP
Retailer 14£360 GBP
Retailer 10£385 GBP
Retailer 17£455 GBP
Retailer 7£626 GBP
Retailer 3£628 GBP
Retailer 6£661 GBP
Retailer 15£704 GBP
Retailer 11£762 GBP
Retailer 18£782 GBP
Retailer 19£802 GBP
Brilliant Earth£1,067 GBP

44 data points across 19 retailers

25 retailers£157 GBP to £1,067 GBP

A
Cheapest Retailer
-
£157 GBP
$211 USD
A
Retailer 2
-
£175 GBP
$235 USD
View
Final sale: no returns
A
Retailer 3
-
£182 GBP
$244 USD
View
A
Retailer 4
-
£195 GBP
$261 USD
View
A
Retailer 5
-
£195 GBP
$261 USD
View
A
Retailer 6
-
£220 GBP
HK$2,300 HKD
View
B+
Retailer 7
-
£276 GBP
$370 USD
View
A
Retailer 8
-
£316 GBP
€403 EUR
View
A
Retailer 9
-
£335 GBP
ZAR 7,243 ZAR
View
A
Retailer 10
-
£360 GBP
View
A
Retailer 11
-
£384 GBP
$515 USD
View
A
Retailer 12
-
£385 GBP
$516 USD
View
B+
Retailer 13
-
£455 GBP
A$938 AUD
View
B+
Retailer 14
-
£626 GBP
$839 USD
View
B+
Retailer 15
-
£628 GBP
$842 USD
View
B+
Retailer 16
-
£633 GBP
SGD 1,147 SGD
View
B+
Retailer 17
-
£661 GBP
$886 USD
View
B
Retailer 18
-
£666 GBP
$892 USD
View
B
Retailer 19
-
£704 GBP
A$1,452 AUD
View
B
Retailer 20
-
£762 GBP
View
B
Retailer 21
-
£782 GBP
View
B
Retailer 22
-
£793 GBP
$1,063 USD
View
Retailer 23
-
£802 GBP
$1,075 USD
View
Price last confirmed 13 days ago
B
Retailer 24
-
£916 GBP
$1,227 USD
View
Most Expensive
B
Brilliant Earth
17805137A · Oct 31
£1,067 GBP
$1,430 USD
View
24 more retailers have this diamond
Prices start from £157 GBPSave up to £910 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
1.51ct Radiant
£157 GBP