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Round|Lab Grown|IGI

10.78ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG817695525

Shape and cutting style on the report: Round brilliant

Certificate IGI LG817695525

Diamond specifications and retailer prices

From £1,774 GBP
As of October 30, 2026
Save £13,742 GBP (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £15,516 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 10.78ct lab-grown round diamond

This 10.78ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG817695525 or 817695525. Listed at 12 retailers as of October 29, 2026, with prices from £1,774 to £15,516, a £13,742 spread on the same certified stone. Brilliant Earth lists it at £15,516. 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

10.78
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817695525
Dimensions14.33 × 14.23 × 8.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.33 mm14.23 mm10.78 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817695525
Side View
Table 60.0%Crown 33.6°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 59.8%

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 30
Current: £15,516 GBP|Low: £1,774 GBP|High: £15,531 GBP|Avg: £4,792 GBP|+0.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 2£1,774 GBP
Retailer 12£2,280 GBP
Retailer 3£2,682 GBP
Retailer 4£2,752 GBP
Retailer 11£2,994 GBP
Retailer 5£3,001 GBP
Retailer 9£3,914 GBP
Retailer 6£4,309 GBP
Retailer 7£4,357 GBP
Retailer 8£4,921 GBP
Retailer 10£10,240 GBP
Brilliant Earth£15,516 GBP

37 data points across 12 retailers

12 retailers£1,774 GBP to £15,516 GBP

A
Cheapest Retailer
-
£1,774 GBP
A
Retailer 2
-
£2,280 GBP
$3,055 USD
View
A
Retailer 3
-
£2,682 GBP
$3,594 USD
View
A
Retailer 4
-
£2,752 GBP
$3,687 USD
View
A
Retailer 5
-
£2,994 GBP
$4,012 USD
View
A
Retailer 6
-
£3,001 GBP
€3,829 EUR
View
Retailer 7
-
£3,914 GBP
A$8,068 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£4,309 GBP
$5,773 USD
View
B+
Retailer 9
-
£4,357 GBP
$5,837 USD
View
B+
Retailer 10
-
£4,921 GBP
$6,593 USD
View
B
Retailer 11
-
£10,240 GBP
$13,720 USD
View
Most Expensive
B
Brilliant Earth
21034507A · Oct 29
£15,516 GBP
$20,790 USD
View
11 more retailers have this diamond
Prices start from £1,774 GBPSave up to £13,742 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
10.78ct Round
£1,774 GBP