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Round|Lab Grown|IGI

2.51ct D VVS1 Round Lab Grown Diamond

ID • D/VVS1 • IGI LG788646509

Shape and cutting style on the report: Round brilliant

Certificate IGI LG788646509

Diamond specifications and retailer prices

From £360 GBP
$480 USD
As of October 29, 2026
Save £1,540 GBP (81%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £5,707 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 2.51ct lab-grown round diamond

This 2.51ct lab-grown round sits in the two to three carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG788646509 or 788646509. Listed at 26 retailers as of October 29, 2026, with a 427% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.51
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788646509
Dimensions8.75 × 8.79 × 5.32 mm
L/W Ratio1.00
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
8.75 mm8.79 mm2.51 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788646509
Side View
Table 60.0%Crown 32.9°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 60.6%

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: Oct 29
Current: £5,707 GBP|Low: £360 GBP|High: £5,707 GBP|Avg: £1,353 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
October 29, 2026
Retailer 9£360 GBP
Retailer 10£402 GBP
Retailer 15£559 GBP
Retailer 13£570 GBP
Retailer 4£599 GBP
Retailer 7£677 GBP
Retailer 2£748 GBP
Retailer 11£749 GBP
Retailer 16£1,013 GBP
Retailer 14£1,093 GBP
Retailer 3£1,217 GBP
Retailer 8£1,694 GBP
Retailer 5£1,852 GBP
Retailer 12£1,901 GBP
Retailer 6£2,489 GBP
Brilliant Earth£5,707 GBP

32 data points across 16 retailers

26 retailers£360 GBP to £1,901 GBP

A
Cheapest Retailer
-
£360 GBP
$480 USD
A
Retailer 2
-
£402 GBP
$536 USD
View
Final sale: no returns
A
Retailer 3
-
£409 GBP
$545 USD
View
A
Retailer 4
-
£447 GBP
$595 USD
View
Price last confirmed 58 days ago
A
Retailer 5
-
£453 GBP
$603 USD
View
A
Retailer 6
-
£453 GBP
$603 USD
View
Price last confirmed 13 days ago
A
Retailer 7
-
£559 GBP
$745 USD
View
A
Retailer 8
-
£570 GBP
View
A
Retailer 9
-
£599 GBP
$798 USD
View
A
Retailer 10
-
£652 GBP
€827 EUR
View
A
Retailer 11
-
£677 GBP
A$1,388 AUD
View
A
Retailer 12
-
£748 GBP
View
A
Retailer 13
-
£749 GBP
€950 EUR
View
B+
Retailer 14
-
£935 GBP
$1,245 USD
View
Price last confirmed 22 days ago
B+
Retailer 15
-
£1,013 GBP
A$2,076 AUD
View
Price last confirmed 9 days ago
B+
Retailer 16
-
£1,034 GBP
$1,377 USD
View
B+
Retailer 17
-
£1,093 GBP
ZAR 23,515 ZAR
View
B+
Retailer 18
-
£1,191 GBP
$1,586 USD
View
B+
Retailer 19
-
£1,217 GBP
$1,621 USD
View
B
Retailer 20
-
£1,477 GBP
$1,967 USD
View
B
Retailer 21
-
£1,583 GBP
$2,108 USD
View
B
Retailer 22
-
£1,694 GBP
$2,256 USD
View
B+
Retailer 23
-
£1,852 GBP
A$3,795 AUD
View
Price last confirmed 21 days ago
B+
Retailer 24
-
£1,901 GBP
View
B
Retailer 25
-
£2,489 GBP
$3,315 USD
View
Price last confirmed 22 days ago
Most Expensive
B
Brilliant Earth
20608687A · Oct 28
£5,707 GBP
$7,600 USD
View
Price under review
25 more retailers have this diamond
Prices start from £360 GBPSave up to £1,540 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
2.51ct Round
£360 GBP