CaratHunter
Plans
Cushion|Lab Grown|IGI

0.51ct D VS1 Cushion Lab Grown Diamond

ID • D/VS1 • IGI LG707506817

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG707506817

Diamond specifications and retailer prices

From £113 GBP
$151 USD
As of October 30, 2026
Save £625 GBP (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,055 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.51ct lab-grown cushion diamond

This 0.51ct lab-grown cushion sits in the half to three-quarter carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG707506817 or 707506817. Listed at 11 retailers as of October 30, 2026, with a 555% 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

0.51
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle33.6°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG707506817
Dimensions4.74 × 4.67 × 2.87 mm
L/W Ratio1.01
Girdle conditionFaceted
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
4.74 mm4.67 mm0.51 ctD / VS1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG707506817
Side View
Table 65.0%Crown 33.6°Girdle: MED-THKPavilion 36.2°Culet: NoneDepth 61.5%

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: £1,055 GBP|Low: £81 GBP|High: £1,063 GBP|Avg: £350 GBP|+76.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 3£113 GBP
Retailer 9£125 GBP
Retailer 8£172 GBP
Retailer 2£213 GBP
Retailer 5£225 GBP
Retailer 6£227 GBP
Retailer 10£237 GBP
Retailer 4£242 GBP
Retailer 11£306 GBP
Retailer 7£660 GBP
Retailer 12£738 GBP
MOH London£1,055 GBP

37 data points across 12 retailers

11 retailers£113 GBP to £738 GBP

A
Cheapest Retailer
-
£113 GBP
$151 USD
Final sale: no returns
A
Retailer 2
-
£125 GBP
$168 USD
View
A
Retailer 3
-
£172 GBP
$230 USD
View
B+
Retailer 4
-
£213 GBP
View
B+
Retailer 5
-
£225 GBP
€287 EUR
View
B+
Retailer 6
-
£227 GBP
ZAR 4,917 ZAR
View
B+
Retailer 7
-
£237 GBP
$317 USD
View
B+
Retailer 8
-
£306 GBP
$410 USD
View
B
Retailer 9
-
£660 GBP
View
B
Retailer 10
-
£738 GBP
$989 USD
View
Most Expensive
MOH London
LG707506817 · Oct 29
£1,055 GBP
View
Price under review
10 more retailers have this diamond
Prices start from £113 GBPSave up to £625 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
0.51ct Cushion
£113 GBP