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Round|Lab Grown|IGI

0.99ct E VVS1 Round Lab Grown Diamond

ID • E/VVS1 • IGI LG770638401

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770638401

Diamond specifications and retailer prices

From £131 GBP
$175 USD
As of October 29, 2026
Save £1,061 GBP (89%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,192 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 0.99ct lab-grown round diamond

This 0.99ct lab-grown round sits in the just-under-one-carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG770638401 or 770638401. Listed at 24 retailers as of October 27, 2026, with prices from £131 to £1,192, a £1,061 spread on the same certified stone. Queensmith lists it at £1,192. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.99
Carat
E
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770638401
Dimensions6.37 × 6.42 × 3.90 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
6.37 mm6.42 mm0.99 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770638401
Side View
Table 59.0%Crown 34.9°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 60.8%

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 29
Current: £289 GBP|Low: £126 GBP|High: £769 GBP|Avg: £343 GBP|+6.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 12£131 GBP
Retailer 3£162 GBP
Retailer 2£219 GBP
Retailer 1£289 GBP
Retailer 8£294 GBP
Retailer 7£302 GBP
Retailer 5£318 GBP
Retailer 4£342 GBP
Retailer 9£405 GBP
Retailer 11£407 GBP
Retailer 10£608 GBP
Retailer 6£764 GBP

37 data points across 12 retailers

24 retailers£131 GBP to £1,192 GBP

A
Cheapest Retailer
-
£131 GBP
$175 USD
A
Retailer 2
-
£146 GBP
$195 USD
View
Final sale: no returns
A
Retailer 3
-
£152 GBP
$202 USD
View
A
Retailer 4
-
£162 GBP
$216 USD
View
A
Retailer 5
-
£162 GBP
$216 USD
View
A
Retailer 6
-
£183 GBP
HK$1,900 HKD
View
B+
Retailer 7
-
£219 GBP
$292 USD
View
A
Retailer 8
-
£260 GBP
$346 USD
View
A
Retailer 9
-
£289 GBP
View
A
Retailer 10
-
£294 GBP
ZAR 6,318 ZAR
View
A
Retailer 11
-
£302 GBP
€383 EUR
View
A
Retailer 12
-
£318 GBP
View
B+
Retailer 13
-
£342 GBP
$456 USD
View
B+
Retailer 14
-
£405 GBP
A$830 AUD
View
B+
Retailer 15
-
£407 GBP
$542 USD
View
B+
Retailer 16
-
£444 GBP
SGD 799 SGD
View
Retailer 17
-
£499 GBP
$665 USD
View
Price last confirmed 37 days ago
B
Retailer 18
-
£523 GBP
$696 USD
View
B
Retailer 19
-
£538 GBP
$716 USD
View
B
Retailer 20
-
£563 GBP
$750 USD
View
Retailer 21
-
£608 GBP
$810 USD
View
Price last confirmed 13 days ago
B
Retailer 22
-
£764 GBP
View
B
Retailer 23
-
£835 GBP
$1,112 USD
View
Most Expensive
B
Queensmith
LG770638401 · Oct 27
£1,192 GBP
View
23 more retailers have this diamond
Prices start from £131 GBPSave up to £1,061 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
0.99ct Round
£131 GBP